Ford Mondeo 4 Owners Manual
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and right-hand mountings. Do not yet release the hoist; the weight of the engine/transmission unit must not be taken by the mountings until all are correctly aligned. (d) Fitting the Ford service tool in place of the front mounting, tighten the engine/transmission mounting fasteners to their specified torque wrench settings, and in the sequence described in Part B of this Chapter, Section 4, paragraphs 49 and 50. (e) Refill the cooling system (see Chapter 1). (f) Refill the engine with oil, remembering that you are advised to fit a new filter (see Chapter 1). (g) Check for signs of oil or coolant leaks once the engine has been restarted and warmed-up to normal operating temperature. Removal Note:While this task is theoretically possible when the engine is in place in the vehicle, in practice, it requires so much preliminary dismantling, and is so difficult to carry out due to the restricted access, that owners are advised to remove the engine from the vehicle first. Note, however, that the oil pumppressure relief valve can be removed with the engine in situ - see paragraph 8. In addition to the new pump gasket and other replacement parts required, read through Section 15, and ensure that the necessary tools and facilities are available. 1Remove the timing belt (see Section 10). 2Withdraw the crankshaft toothed pulley and the thrustwasher behind it, noting which way round the thrustwasher is fitted (see Section 11). 3Remove the sump (see Section 15). 4Undo the screws securing the oil pump pick-up/strainer pipe to the pump, then unscrew the nut and withdraw the oil pump pick-up/strainer pipe. Discard the gasket. 5Unbolt the pump from the cylinder block/crankcase (see illustration). Withdraw and discard the gasket, and remove the crankshaft right-hand oil seal. Thoroughly clean and degrease all components, particularly the mating surfaces of the pump, the sump, and the cylinder block/crankcase. Inspection 6Unscrew the Torx screws, and remove the pump cover plate; noting any identification marks on the rotors, withdraw the rotors (see illustration). 7Inspect the rotors for obvious signs of wear or damage, and renew if necessary; if either rotor, the pump body, or its cover plate are scored or damaged, the complete oil pump assembly must be renewed. 8The oil pressure relief valve can bedismantled, if required, without disturbing the pump. With the vehicle parked on firm level ground, apply the handbrake securely and raise its front end, supporting it securely on axle stands. Remove the front right-hand roadwheel and auxiliary drivebelt cover (see Chapter 1) to provide access to the valve. 9Unscrew the threaded plug, and recover the valve spring and plunger (see illustrations). If the plug’s sealing O-ring is worn or damaged, a new one must be obtained, to be fitted on reassembly. 10Reassembly is the reverse of the dismantling procedure; ensure the spring and valve are refitted the correct way round, and tighten the threaded plug securely. Refitting 11The oil pump must be primed on installation, by pouring clean engine oil into it, and rotating its inner rotor a few turns. 12Using grease to stick the new gasket in place on the cylinder block/crankcase, and rotating the pump’s inner rotor to align with the flats on the crankshaft, refit the pump and insert the bolts, tightening them lightly at first (see illustration). 13Using a suitable straight edge and feeler gauges, check that the pump is both centred exactlyaround the crankshaft, and aligned squarely so that its (sump) mating surface is exactly the same amount - between 0.3 and 0.8 mm - below that of the cylinder block/ crankcase on each side of the crankshaft (see illustration). Being careful not to disturb 16 Oil pump - removal, inspection and refitting In-car engine repair procedures 2A•21 2A 16.9B . . . to withdraw oil pressure relief valve spring and plunger16.12 Use new gasket when refitting oil pump16.13 Check the oil pump is positioned correctly 16.5 Unscrew bolts (arrowed) to remove oil pump16.6 Withdrawing oil pump inner rotor16.9A Unscrew threaded plug - seen through right-hand wheel arch . . .
the gasket, move the pump into the correct position, and tighten its bolts to the specified torque wrench setting. 14Check that the pump is correctly located; if necessary, unbolt it again, and repeat the full procedure to ensure that the pump is correctly aligned. 15Fit a new crankshaft right-hand oil seal (see Section 20). 16Using grease to stick the gasket in place on the pump, refit the pick-up/strainer pipe, tightening its screws and nut to their specified torque wrench settings (see illustration). 17The remainder of reassembly is the reverse of the removal procedure, referring to the relevant text for details where required. 1Drain the cooling system (see Chapter 1). Disconnect the coolant hoses from the oil cooler. 2Unscrew the oil filter (see Chapter 1) - catch any escaping oil in a drip tray. 3Unscrew the filter adaptor from the oil pump, and withdraw the oil cooler; note how its unions are aligned, and be prepared for oil loss from the cooler. 4Refitting is the reverse of the removal procedure, noting the following points:(a) Renew all O-rings and seals disturbed on removal. (b) Align the cooler’s unions as noted on removal, and tighten the adaptor to the specified torque wrench setting. (c) Refill the cooling system (see Chapter 1). (d) Refit the oil filter, then check the engine oil level, and top-up as necessary (see Chapter 1). (e) Check for signs of oil or coolant leaks once the engine has been restarted and warmed- up to normal operating temperature. 1With the vehicle parked on firm level ground, open the bonnet and disconnect the battery negative (earth) lead - see Chapter 5, Section 1. 2Raise the front of the vehicle, and support it securely on axle stands. 3Undo the two screws, and remove the sensor’s cover from the front of the sump (see illustration). 4Unplug the wiring from the sensor (see illustration). Where necessary, unplug the electrical connector to disconnect the sensor wiring, and unclip the connector to release the wiring from the vehicle. 5Unscrew the sensor, and quickly plug the sump aperture to minimise oil loss; note the sensor’s seal.6Refitting is the reverse of the removal procedure; renew the sensor’s seal if it is worn or damaged, and tighten the sensor to the specified torque wrench setting. Check the engine oil level, and top-up as necessary (see Chapter 1) - check for signs of oil leaks once the engine has been restarted and warmed-up to normal operating temperature. 1The switch is screwed into the rear of the cylinder block, above the right-hand driveshaft’s support bearing (see illustration). 2With the vehicle parked on firm level ground, open the bonnet and disconnect the battery negative (earth) lead - see Chapter 5, Section 1. 3Raise the front of the vehicle, and support it securely on axle stands. 4Unplug the wiring from the switch, and unscrew it; be prepared for some oil loss. 5Refitting is the reverse of the removal procedure; apply a thin smear of suitable sealant to the switch threads, and tighten it to the specified torque wrench setting. Check the engine oil level, and top-up as necessary (see Chapter 1). Check for signs of oil leaks once the engine has been restarted and warmed-up to normal operating temperature. Note:Don’t try to prise these seals out without removing the oil pump or seal carrier - the seals are too soft, and the amount of space available is too small, for this to be possible without considerable risk of damage to the seal housing and/or the crankshaft journal. Follow exactly the procedure given below. Right-hand seal 1Remove the oil pump (see Section 16). 2Drive the oil seal out of the pump from behind (see illustration). 20 Crankshaft oil seals - renewal 19 Oil pressure warning light switch - removal and refitting 18 Oil level sensor- removal and refitting 17 Oil cooler - removal and refitting 2A•22 In-car engine repair procedures 16.16 Use new gasket when refitting oil pick-up pipe to pump18.3 Remove screws (arrowed) to remove oil level sensor cover . . .18.4 . . . disconnecting wiring from sensor 19.1 Oil pressure warning light switch (arrowed) is screwed into rear of cylinder block, above right-hand driveshaft support bearing 20.2 Driving out crankshaft right-hand oil seal
3Clean the seal housing and crankshaft, polishing off any burrs or raised edges, which may have caused the seal to fail in the first place. 4Refit the oil pump (see Section 16). Grease the lips and periphery of the new seal, to ease installation. 5To fit a new seal, Ford recommend the use of their service tool 21-093A, with the crankshaft pulley bolt, to draw the seal into place; an alternative can be arranged using a socket of suitable size, with a washer to match the crankshaft pulley bolt (see illustration). 6If such tools are not available, press the seal squarely into place by hand; tap it in until it is flush with the pump housing, using a soft- faced mallet and a socket with an outside diameter only slightly smaller than the seal’s (see illustration). This approach requires great care, to ensure that the seal is fitted squarely, without distortion or damage. 7Wash off any traces of oil. The remainder of reassembly is the reverse of the removal procedure, referring to the relevant text for details where required. Check for signs of oil leakage when the engine is restarted. Left-hand seal 8Remove the transmission (see the relevant Part of Chapter 7). 9Where appropriate, remove the clutch (Chapter 8). 10Unbolt the flywheel/driveplate (see Section 21).11Remove the sump (see Section 15). 12Unbolt the oil seal carrier (see illustration). Remove and discard its gasket. 13Supporting the carrier evenly on wooden blocks, drive the oil seal out of the carrier from behind (see illustration). 14Clean the seal housing and crankshaft, polishing off any burrs or raised edges, which may have caused the seal to fail in the first place. Clean also the mating surfaces of the cylinder block/crankcase and carrier, using a scraper to remove all traces of the old gasket - be careful not to scratch or damage the material of either - then use a suitable solvent to degrease them. 15Use grease to stick the new gasket in place on the cylinder block/crankcase, then offer up the carrier (see illustration). 16Using a suitable straight edge and feeler gauges, check that the carrier is both centred exactlyaround the crankshaft, and aligned squarely so that its (sump) mating surface is exactly the same amount - between 0.3 and 0.8 mm - below that of the cylinder block/crankcase on each side of the crankshaft. Being careful not to disturb the gasket, move the carrier into the correct position, and tighten its bolts to the specified torque wrench setting (see illustration). 17Check that the carrier is correctly located; if necessary, unbolt it again, and repeat the full procedure to ensure that the carrier is correctly aligned. 18Ford’s recommended method of seal fitting is to use service tool 21-141, with twoflywheel bolts to draw the seal into place. If this is not available, make up a guide from a thin sheet of plastic or similar, lubricate the lips of the new seal and the crankshaft shoulder with grease, then offer up the seal, with the guide feeding the seal’s lips over the crankshaft shoulder (see illustration). Press the seal evenly into its housing by hand only, and use a soft-faced mallet gently to tap it into place until it is flush with the surrounding housing. 19Wipe off any surplus oil or grease; the remainder of the reassembly procedure is the reverse of dismantling, referring to the relevant text for details where required. Check for signs of oil leakage when the engine is restarted. In-car engine repair procedures 2A•23 2A 20.15 Use new gasket when refitting left- hand oil seal carrier20.16 Check the oil seal carrier is correctly positioned20.18 Using guide made from thin sheet of plastic to slide oil seal lips over crankshaft shoulder 20.5 Socket of correct size can be used to replace Ford service tool, drawing new seal into place as described20.6 If seal is tapped into place as shown, exercise great care to prevent seal from being damaged or distorted20.12 Unscrew bolts (arrowed) to remove crankshaft left-hand oil seal carrier . . . 20.13 . . . and ensure that carrier is properly supported when driving out used oil seal - note notches provided in carrier for drift
Removal 1Remove the transmission (see the relevant Part of Chapter 7). Now is a good time to check components such as oil seals and renew them if necessary. 2Where appropriate, remove the clutch (Chapter 8). Now is a good time to check or renew the clutch components and pilot bearing. 3Use a centre-punch or paint to make alignment marks on the flywheel/driveplate and crankshaft, to ensure correct alignment during refitting. 4Prevent the flywheel/driveplate from turning by locking the ring gear teeth, or by bolting a strap between the flywheel/ driveplate and the cylinder block/ crankcase. Slacken the bolts evenly until all are free. 5Remove each bolt in turn, and ensure that new replacements are obtained for reassembly; these bolts are subjected to severe stresses, and so must be renewed, regardless of their apparent condition, whenever they are disturbed. 6Noting the reinforcing plate (automatic transmission-equipped models only), withdraw the flywheel/driveplate; do not drop it - it is very heavy. Inspection 7Clean the flywheel/driveplate to remove grease and oil. Inspect the surface for cracks, rivet grooves, burned areas and score marks. Light scoring can be removed with emery cloth. Check for cracked and broken ring gear teeth. Lay the flywheel/driveplate on a flat surface, and use a straight edge to check for warpage. 8Clean and inspect the mating surfaces of the flywheel/driveplate and the crankshaft. If the crankshaft left-hand seal is leaking, renew it (see Section 20) before refitting the flywheel/driveplate. 9While the flywheel/driveplate is removed,clean carefully its inboard (right-hand) face, particularly the recesses which serve as the reference points for the crankshaft speed/position sensor. Clean the sensor’s tip, and check that the sensor is securely fastened. Refitting 10On refitting, ensure that the engine/transmission adaptor plate is in place (where necessary), then fit the flywheel/driveplate to the crankshaft so that all bolt holes align - it will fit only one way - check this using the marks made on removal. Do not forget the reinforcing plate (where fitted). 11Lock the flywheel/driveplate by the method used on dismantling. Working in a diagonal sequence to tighten them evenly, and increasing to the final amount in two or three stages, tighten the new bolts to the specified torque wrench setting (see illustration). 12The remainder of reassembly is the reverse of the removal procedure, referring to the relevant text for details where required. General 1The engine/transmission mountings seldom require attention, but broken or deteriorated mountings should be renewed immediately, or the added strain placed on the driveline components may cause damage or wear. 2While separate mountings may be removed and refitted individually, if more than one is disturbed at a time - such as if theengine/transmission unit is removed from its mountings - they must be reassembled and their fasteners tightened in a strict sequence. 3On reassembly, the weight of the engine/transmission unit must not be taken by the mountings until all are correctly aligned. Fitting the Ford service tool in place of the front mounting, tighten the engine/transmission mounting fasteners to their specified torque wrench settings, and in the sequence described in Part B of this Chapter, Section 4, paragraphs 49 and 50. Inspection 4During the check, the engine/transmission unit must be raised slightly, to remove its weight from the mountings. 5Raise the front of the vehicle, and support it securely on axle stands. Position a jack under the sump, with a large block of wood between the jack head and the sump, then carefully raise the engine/transmission just enough to take the weight off the mountings. Warning: DO NOT place any part of your body under the engine when it is supported only by a jack! 6Check the mountings to see if the rubber is cracked, hardened or separated from the metal components. Sometimes the rubber will split right down the centre. 7Check for relative movement between each mounting’s brackets and the engine/ transmission or body (use a large screwdriver or lever to attempt to move the mountings). If movement is noted, lower the engine and check-tighten the mounting fasteners. Renewal Front mounting 8Unbolt the resonator support bracket from the engine compartment front crossmember, slacken the two clamp screws securing the 22 Engine/transmission mountings - inspection and renewal 21 Flywheel/driveplate - removal, inspection and refitting 2A•24 In-car engine repair procedures 21.11 Note method used to lock flywheel/driveplate while (new) bolts are tightened 22.8 Engine/transmission front mounting - manual transmission shown, automatic equivalent similar 1 Transmission 3 Mounting 5 Mounting centre bolt 2 Mounting bracket 4 Front suspension subframe
resonator to the air mass meter and plenum chamber hoses, then swing the resonator up clear of the thermostat housing (see Chapter 4). Unbolt the pulse-air filter housing from the mounting bracket, then unfasten thebolts/nuts securing the mounting to the subframe, unscrew the centre bolt and withdraw the mounting; note the location of the wiring connector bracket. The mounting’s bracket can be unbolted from the transmission if required (see illustration). 9On refitting, ensure that the mounting-to- transmission bolts are securely tightened, then refit the mounting and wiring connector bracket. Tighten first the mounting-to- subframe bolts/nuts, noting that these are to be tightened in two stages to the final specified torque wrench setting. Finally tighten the mounting’s centre bolt, again to the specified torque wrench setting. Right-hand mounting 10Unscrew the nuts and withdraw the bracket; note that these nuts are self-locking, and must therefore be renewed wheneverthey are disturbed. Unbolt the mounting from the body (see illustration). 11Where hydraulic-type mountings are fitted - there are only five nuts securing the bracket, and the mounting is clearly identifiable from its shape - take care never to tilt these more than 5° from the vertical (see illustration). 12On refitting, renew the self-locking nuts, and tighten all fasteners to the torque wrench settings specified. When tightening the nuts, tighten first the four bracket-to-engine nuts, then release the hoist or jack to allow the engine/transmission’s weight to rest on the mounting. Do not allow the mounting to twist as the last two of the nuts are tightened (see illustration). Left-hand mounting 13Unplugging the two electrical connectors, disconnecting the vacuum hose (where fitted) and disconnecting the crankcase breather hose from the cylinder head cover, remove the complete air cleaner assembly with the air mass meter, the resonator and the plenum chamber (see Chapter 4). 14Unscrew the three nuts to release the mounting from the transmission, then unbolt it from the body (see illustration). Note that In-car engine repair procedures 2A•25 2A 22.14 Engine/transmission left-hand mounting - manual transmission shown, automatic equivalent similar 1 Mounting bracket 2 Mounting 3 Transmission 4 Studs 5 Fastening plate - where fitted 22.12 When reassembling engine/transmission right-hand mounting, tighten nuts “A” first, release lifting equipment, then tighten remaining nuts “B” - do not allow mounting to twist when doing so 22.15 Engine/transmission left-hand mounting is secured by self-locking nuts “A” to transmission, by bolts “B” to body22.16 Where vehicle is fitted with automatic transmission, additional damper may be fastened to underside of engine/ transmission rear mounting, as shown 22.10 Engine/transmission right-hand mounting - standard type 1 Bracket 2 Mounting 3 Brackets bolted to cylinder block/crankcase 4 Vehicle body22.11 Engine/transmission right-hand mounting - hydraulic type (where fitted) 1 Bracket 2 Hydraulic mounting 3 Brackets bolted to cylinder block/crankcase 4 Vehicle body
the nuts are self-locking, and must therefore be renewed whenever they are disturbed. Unscrew the centre bolt to dismantle the mounting, if necessary to renew components. 15On refitting, renew the self-locking nuts, and do not allow the mounting to twist as the nuts are tightened (see illustration). Tighten all fasteners to the specified torque wrench settings.Rear mounting 16Where the vehicle is fitted with automatic transmission, a separate damper may be fitted beneath the subframe, which must be unbolted to reach the mounting’s fasteners (see illustration). 17Unbolt the mounting from the subframe, then unscrew the mounting’s centre bolt. If required, unbolt the mounting’s bracket fromthe transmission (see illustrations). 18On refitting, ensure that the mounting-to- transmission bolts are securely tightened, then refit the mounting. Tighten first the mounting-to-subframe bolts, noting that these are to be tightened in two stages to the final specified torque wrench setting. Finally tighten the mounting’s centre bolt, again to the specified torque wrench setting. 2A•26 In-car engine repair procedures 22.17A Engine/transmission rear mounting - manual transmission type 1 Transmission 4 Mounting 2 Mounting bracket 5 Mounting centre bolt 3 Front suspension subframe 22.17B Engine/transmission rear mounting - automatic transmission type 1 Transmission 3 Mounting 5 Mounting centre bolt 2 Mounting bracket 4 Front suspension subframe
Chapter 2 Part B: Engine removal and general engine overhaul procedures Compression test - description and interpretation . . . See Chapter 2A Crankshaft - inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Crankshaft - refitting and main bearing running clearance check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Crankshaft - removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Cylinder block/crankcase - cleaning and inspection . . . . . . . . . . . . 11 Cylinder head - dismantling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Cylinder head - reassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Cylinder head and valve components - cleaning and inspection . . . 7 Engine - initial start-up after overhaul . . . . . . . . . . . . . . . . . . . . . . . . 19 Engine overhaul - dismantling sequence . . . . . . . . . . . . . . . . . . . . . 5Engine overhaul - general information . . . . . . . . . . . . . . . . . . . . . . . 2 Engine overhaul - reassembly sequence . . . . . . . . . . . . . . . . . . . . . 15 Engine/transmission - removal and refitting . . . . . . . . . . . . . . . . . . . 4 Engine/transmission removal - methods and precautions . . . . . . . . 3 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Main and big-end bearings - inspection . . . . . . . . . . . . . . . . . . . . . . 14 Piston/connecting rod assemblies - inspection . . . . . . . . . . . . . . . . 12 Piston/connecting rod assemblies - refitting and big-end bearing running clearance check . . . . . . . . . . . . . . . . . . . 18 Piston/connecting rod assemblies - removal . . . . . . . . . . . . . . . . . . 9 Piston rings - refitting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Cylinder head Maximum permissible gasket surface distortion . . . . . . . . . . . . . . . . . . 0.10 mm Valve seat included angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90° Valve guide bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.060 to 6.091 mm Valves - generalInlet Exhaust Valve lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.500 to 7.685 mm7.610 to 7.765 mm Valve length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96.870 to 97.330 mm 96.470 to 96.930 mm Valve head diameter: 1.6 litre engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26.0 mm 24.5 mm 1.8 and 2.0 litre engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.0 mm 28.0 mm Valve stem diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.028 to 6.043 mm 6.010 to6.025 mm Valve stem-to-guide clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.017 to 0.064 mm 0.035 to 0.081 mm Cylinder block Cylinder bore diameter - 1.6 litre engine: Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76.000 to 76.010 mm Class 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76.010 to 76.020 mm Class 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76.020 to 76.030 mm Cylinder bore diameter - 1.8 litre engine: Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80.600 to 80.610 mm Class 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80.610 to 80.620 mm Class 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80.620 to 80.630 mm Cylinder bore diameter - 2.0 litre engine: Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.800 to 84.810 mm Class 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.810 to 84.820 mm Class 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.820 to 84.830 mm 2B•1 Easy,suitable for novice with little experienceFairly easy,suitable for beginner with some experienceFairly difficult,suitable for competent DIY mechanicDifficult,suitable for experienced DIY mechanicVery difficult, suitable for expert DIY or professional Degrees of difficulty Specifications Contents2B
Pistons and piston rings Piston diameter - 1.6 litre engine: Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75.975 to 75.985 mm Class 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75.985 to 75.995 mm Class 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75.995 to 76.005 mm Piston diameter - 1.8 litre engine: Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80.570 to 80.580 mm Class 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80.580 to 80.590 mm Class 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80.590 to 80.600 mm Piston diameter - 2.0 litre engine: Class 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.770 to 84.780 mm Class 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.780 to 84.790 mm Class 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.790 to 84.800 mm Oversizes - all engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . None available Piston-to-cylinder bore clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No information available at time of writing Piston ring end gaps - installed: Top compression ring - 1.6 and 1.8 litre engines . . . . . . . . . . . . . . . . 0.30 to 0.50 mm Top compression ring - 2.0 litre engine . . . . . . . . . . . . . . . . . . . . . . . 0.26 to 0.50 mm Second compression ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.30 to 0.50 mm Oil control ring - 1.6 litre engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.25 to 1.00 mm Oil control ring - 1.8 litre engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.38 to 1.14 mm Oil control ring - 2.0 litre engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.40 to 1.40 mm Gudgeon pin Diameter: White colour code/piston crown marked “A” . . . . . . . . . . . . . . . . . . . 20.622 to 20.625 mm Red colour code/piston crown marked “B” . . . . . . . . . . . . . . . . . . . . 20.625 to 20.628 mm Blue colour code/piston crown marked “C” . . . . . . . . . . . . . . . . . . . . 20.628 to 20.631 mm Clearance in piston . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.010 to 0.016 mm Connecting rod small-end eye internal diameter . . . . . . . . . . . . . . . . . . 20.589 to 20.609 mm Interference fit in connecting rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.011 to 0.042 mm Crankshaft and bearings Main bearing shell standard inside diameter - installed . . . . . . . . . . . . 58.011 to 58.038 mm Main bearing journal standard diameter . . . . . . . . . . . . . . . . . . . . . . . . 57.980 to 58.000 mm Main bearing journal-to-shell running clearance . . . . . . . . . . . . . . . . . . 0.011 to 0.058 mm Main bearing shell undersizes available . . . . . . . . . . . . . . . . . . . . . . . . . 0.02 mm, 0.25 mm Big-end bearing shell standard inside diameter - installed . . . . . . . . . . . 46.926 to 46.960 mm Crankpin (big-end) bearing journal standard diameter . . . . . . . . . . . . . 46.890 to 46.910 mm Crankpin (big-end) bearing journal-to-shell running clearance . . . . . . . . 0.016 to 0.070 mm Big-end bearing shell undersizes available . . . . . . . . . . . . . . . . . . . . . . 0.02 mm, 0.25 mm Crankshaft endfloat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.090 to 0.310 mm Torque wrench settingsNm lbf ft Main bearing cap bolts and nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 59 Big-end bearing cap bolts: Stage 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 13 Stage 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Angle-tighten a further 90° Piston-cooling oil jet/blanking plug Torx screws . . . . . . . . . . . . . . . . . . 10 7 Cylinder block and head oilway blanking plugs: M6 x 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 11 6 to 8 M10 x 11.5 - in block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 17 1/4 PTF plug - in block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 18 Power steering pump/air conditioning compressor mounting bracket-to-cylinder block bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 35 Exhaust manifold heat shield mounting bracket-to-cylinder block bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 24 Crankcase breather system: Oil separator-to-cylinder block bolts . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 Pipe-to-cylinder head bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 17 Water pump bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Chapter 3 Driveshaft support bearing bracket-to-cylinder block bolts . . . . . . . . . . 48 35 Transmission-to-engine bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Part A of this Chapter Engine/transmission mounting fasteners . . . . . . . . . . . . . . . . . . . . . . . . See Part A of this Chapter Front suspension subframe bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 96 Note:Refer to Part A of this Chapter for remaining torque wrench settings. 2B•2 Engine removal and general engine overhaul procedures
How to use this Chapter This Part of Chapter 2 is devoted to engine/transmission removal and refitting, to those repair procedures requiring the removal of the engine/transmission from the vehicle, and to the overhaul of engine components. It includes only the Specifications relevant to those procedures. Refer to Part A for additional Specifications, if required. General information The information ranges from advice concerning preparation for an overhaul and the purchase of replacement parts, to detailed step-by-step procedures covering removal and installation of internal engine components and the inspection of parts. The following Sections have been written based on the assumption that the engine has been removed from the vehicle. For information concerning in-vehicle engine repair, as well as removal and installation of the external components necessary for the overhaul, see Part A of this Chapter and Section 5 of this Part. When overhauling this engine, it is essential to establish first exactly what replacement parts are available. At the time of writing, components such as the piston rings are not available separately from the piston/connecting rod assemblies; pistons, gudgeon pins and valve guides are not available separately, and very few under- or oversized components are available for engine reconditioning. In most cases, it would appear that the easiest and most economically-sensible course of action is to replace a worn or damaged engine with an exchange unit. It’s not always easy to determine when, or if, an engine should be completely overhauled, as a number of factors must be considered. High mileage is not necessarily an indication that an overhaul is needed, while low mileage doesn’t preclude the need for an overhaul. Frequency of servicing is probably the most important consideration. An engine that’s had regular and frequent oil and filter changes, as well as other required maintenance, will most likely give many thousands of miles of reliable service. Conversely, a neglected engine may require an overhaul very early in its life. Excessive oil consumption is an indication that piston rings, valve seals and/or valve guides are in need of attention. Make surethat oil leaks aren’t responsible before deciding that the rings and/or guides are worn. Perform a cylinder compression check (Part A of this Chapter, Section 3) to determine the extent of the work required. Loss of power, rough running, knocking or metallic engine noises, excessive valve train noise and high fuel consumption rates may also point to the need for an overhaul, especially if they’re all present at the same time. If a full service doesn’t remedy the situation, major mechanical work is the only solution. An engine overhaul involves restoring all internal parts to the specification of a new engine. Note:Always check first what replacement parts are available before planning any overhaul operation; refer to Section 1 of this Part. Ford dealers, or a good engine reconditioning specialist/automotive parts supplier may be able to suggest alternatives which will enable you to overcome the lack of replacement parts. During an overhaul, it is usual to renew the piston rings, and to rebore and/or hone the cylinder bores; where the rebore is done by an automotive machine shop, new oversize pistons and rings will also be installed - all these operations, of course, assume the availability of suitable replacement parts. The main and big-end bearings are generally renewed and, if necessary, the crankshaft may be reground to restore the journals. Generally, the valves are serviced as well, since they’re usually in less-than-perfect condition at this point. While the engine is being overhauled, other components, such as the starter and alternator, can be renewed as well, or rebuilt, if the necessary parts can be found. The end result should be an as-new engine that will give many trouble-free miles. Note:Critical cooling system components such as the hoses, drivebelt, thermostat and water pump MUST be replaced with new parts when an engine is overhauled. The radiator should be checked carefully, to ensure that it isn’t clogged or leaking (see Chapter 3). Also, as a general rule, the oil pump should be renewed when an engine is rebuilt. Before beginning the engine overhaul, read through the entire procedure to familiarise yourself with the scope and requirements of the job. Overhauling an engine isn’t difficult, but it is time-consuming. Plan on the vehicle being off the road for a minimum of two weeks, especially if parts must be taken to an automotive machine shop for repair or reconditioning. Check on availability of parts, and make sure that any necessary special tools and equipment are obtained in advance. Most work can be done with typical hand tools, although a number of precision measuring tools are required, for inspecting parts to determine if they must be replaced. Often, an automotive machine shop will handle the inspection of parts, and will offer advice concerning reconditioning andreplacement. Note:Always wait until the engine has been completely dismantled, and all components, especially the cylinder block/crankcase, have been inspected, before deciding what service and repair operations must be performed by an automotive machine shop. Since the block’s condition will be the major factor to consider when determining whether to overhaul the original engine or buy a rebuilt one, never purchase parts or have machine work done on other components until the cylinder block/crankcase has been thoroughly inspected.As a general rule, time is the primary cost of an overhaul, so it doesn’t pay to install worn or sub-standard parts. As a final note, to ensure maximum life and minimum trouble from a rebuilt engine, everything must be assembled with care, in a spotlessly-clean environment. If you’ve decided that an engine must be removed for overhaul or major repair work, several preliminary steps should be taken. Locating a suitable place to work is extremely important. Adequate work space, along with storage space for the vehicle, will be needed. If a workshop or garage isn’t available, at the very least, a flat, level, clean work surface made of concrete or asphalt is required. Cleaning the engine compartment and engine/transmission before beginning the removal procedure will help keep tools clean and organized. The engine can only be withdrawn by removing it complete with the transmission; the vehicle’s body must be raised and supported securely, sufficiently high that the engine/transmission can be unbolted as a single unit and lowered to the ground; the engine/transmission unit can then be withdrawn from under the vehicle and separated. An engine hoist or A-frame will therefore be necessary. Make sure the equipment is rated in excess of the combined weight of the engine and transmission. Safety is of primary importance, considering the potential hazards involved in removing the engine/transmission from the vehicle. If this is the first time you have removed an engine, a helper should ideally be available. Advice and aid from someone more experienced would also be helpful. There are many instances when one person cannot simultaneously perform all of the operations required when removing the engine/ transmission from the vehicle. Plan the operation ahead of time. Arrange for, or obtain, all of the tools and equipment you’ll need prior to beginning the job. Some of the equipment necessary to perform engine/transmission removal and installation 3 Engine/transmission removal - methods and precautions 2 Engine overhaul - general information 1 General information Engine removal and general engine overhaul procedures 2B•3 2B
safely and with relative ease, and which may have to be hired or borrowed, includes (in addition to the engine hoist) a heavy-duty trolley jack, a strong pair of axle stands, some wooden blocks, and an engine dolly (a low, wheeled platform capable of taking the weight of the engine/transmission, so that it can be moved easily when on the ground). A complete set of spanners and sockets (as described in the front of this manual) will obviously be needed, together with plenty of rags and cleaning solvent for mopping-up spilled oil, coolant and fuel. If the hoist is to be hired, make sure that you arrange for it in advance, and perform all of the operations possible without it beforehand. This will save you money and time. Plan for the vehicle to be out of use for quite a while. A machine shop will be required to perform some of the work which the do-it- yourselfer can’t accomplish without special equipment. These establishments often have a busy schedule, so it would be a good idea to consult them before removing the engine, to accurately estimate the amount of time required to rebuild or repair components that may need work. Always be extremely careful when removing and installing the engine/transmission. Serious injury can result from careless actions. By planning ahead and taking your time, the job (although a major task) can be accomplished successfully. Warning: Petrol is extremely flammable, so take extra precautions when disconnecting any part of the fuel system. Don’t smoke, or allow naked flames or bare light bulbs in or near the work area, and don’t work in a garage where a natural gas appliance (such as a clothes dryer or water heater) is installed. If you spill petrol on your skin, rinse it off immediately. Have a fire extinguisher rated for petrol fires handy, and know how to use it.Note: Read through the entire Section, as well as reading the advice in the preceding Section, before beginning this procedure. The engine and transmission are removed as a unit, lowered to the ground and removed from underneath, then separated outside the vehicle. Removal 1Park the vehicle on firm, level ground, apply the handbrake firmly, and slacken the nuts securing both front roadwheels. 2Relieve the fuel system pressure (see Chapter 4). 3Disconnect the battery negative (earth) lead - see Chapter 5, Section 1. For better access the battery may be removed completely (see Chapter 5). 4Place protective covers on the wings and engine compartment front crossmember, then remove the bonnet (see Chapter 11). 5Whenever you disconnect any vacuum lines, coolant and emissions hoses, wiring loom connectors, earth straps and fuel lines as part of the following procedure, always label them clearly, so that they can be correctly reassembled. 6Unplug the two electrical connectors,disconnect the vacuum hose (where fitted) and disconnect the crankcase breather hose from the cylinder head cover, then remove the complete air cleaner assembly, with the air mass meter, the resonator and the plenum chamber (see Chapter 4). 7Equalise the pressure in the fuel tank by removing the filler cap, then undo the fuel feed and return lines connecting the engine to the chassis (see Chapter 4). Plug or cap all open fittings (see illustration). 8Disconnect the accelerator cable from the throttle linkage as described in Chapter 4 - where fitted, also disconnect the cruise control actuator cable (see Chapter 12). Secure the cable(s) clear of the engine/transmission. 9Releasing its wire clip, unplug the power steering pressure switch electrical connector, then unbolt the power steering high-pressure pipe and the earth lead from the cylinder head rear support plate/engine lifting eye (see illustrations). 10Marking or labelling all components as they are disconnected (see paragraph 5 above), disconnect the vacuum hoses as follows: 4 Engine/transmission - removal and refitting 2B•4 Engine removal and general engine overhaul procedures 4.7 Note colour-coding of unions when disconnecting fuel feed and return lines4.9A Unplug the power steering pressure switch electrical connector . . .4.9B . . . unbolt the power steering high- pressure pipe . . . Whenever any wiring is disconnected, . . . vacuum hoses and pipes should mark or label it as shown, to ensure be similarly marked correct reconnection . . . Masking tape and/or a touch-up paint applicator work well for marking items. Take instant photos, or sketch the locations of components and brackets.