Honda Bmw 5 Service Manual
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< 6-cylinder models: Remove intake manifold to access oil pressure switch (arrow). V-8 models: Oil pressure warning switch (arrow) is located under oil filter housing mounted to left inner fender panel. NOTE- Any time the oilpressure warning switch is removed, be sure to replace the sealing washer. Tightening torque Oil ~ressure switch to oil filter housins 27 Nrn (20 ft-lb) Oil level warning switch, replacing (6-cylinder and V-8) 4 Oil level warning switch is located at bottom of the engine oil pan. Drain engine oil before attempting to remove level warning switch. Be sure to refill engine and check for leaks after work is completed. NOTE- Any time the oil level warning switch is removed, be sure to replace the sealing O-ring between switch and oil pan.
/Lubrication System Oil pump, removing and installing (&cylinder) Oil pump assembly (6-cylinder from 9/98) CAUTIOI\C Oil pump sproclcet nut has left-hand threads. Turn clockwise to loosen. 4 Version 1, M52 oil pump assembly. 1. Oil pump pressure relief control valve 2. Oil pump suction tube 3. Suction tube support bracket 4. Oil pump assembly 5. Oil pump drive sprocltet 6. Oil pump drive chain 7. Oil pump drive sprocket nut (left hand threads) 4 Version 2, M52 TU oil pump assembly. 1. Oil pump pressure relief control valve assembly 2. Oil pump suction pick-up and seal 3. Oil pump 4. Oil pump drive sprocket 5. Oil pump shaft locking nut (left-hand thread) 6. Oil pump drive chain Version 3, M54 oil pump assembly, 1. Drive chain 2. MlO x 1 nut Tighten to 25 Nm (18 ft-lb) 3. Oil pump sprocket 4. Inner pump rotor 5. Outer pump rotor 6. Oil pressure relief valve assembly 7. M8 bolt. Tighten to 23 Nm (17 it-lb) 8. Oil pump housing 9. Locating dowels 10. Pickup tube sealing O-ring 11. Pickup tube 12. M6 pickup tube mounting bolts Tighten to 10 Nm (89 in-lb)
Lubrication System - Lower front suspension and remove oil pan, as described earlier, to gain access to oil pump. Remove oil pump sprocket mounting nut (left-hand thread) (arrow). Lift sprocket off together with drive chain. Engines produced to 9/98: Remove oil pump with pick-up tube. Pick-up tube is bolted to side of oil pump. Engines produced from 9/98 to 01/00: Remove pick-up tube, scraper tray and oil pump as a unit. Engines produced from 01/00: Remove oil pump pick-up tube bolts and remove pick-up tube before removing pump. Remove mounting bolts from oil pump. Withdraw pump. NOTE- Record location of any spacers between pump and engine bloclc Note positions of locating dowels. - Remove cover from oil pump and check for wear or scoring. Spin oil pump shaft and check that gears turn smoothly. Re- place pump if gears spin with difficulty orany wear is present. - Inspect oil pressure relief valve as described later. - Installation is reverse of removal, noting the following: Replace pick-up tube O-ring (if applicable). - Align sprocket splines to oil pump shaft spl~nes before tightening sprocket nut. - After adding engine oil, start and run engine. Raise engine speed to 2,500 rpm until oil pressure warning light goes out (about 5 seconds). Tightening torques Oil drain plug to oil pan 25 Nm (18 ft-lb) Oil pan to engine bloclc M6 (8.8 grade) M6 (10.9 grade) M8 (8.8 grade) 10 Nm (89 in-lb) 12 Nrn (9 ft-lb) 22 Nm (16 ft-lb) Oil pump sprocket to oil pump shait (M10 x 1) (left hand thread) 25 Nm (1 8 it-lb) Oil pump to crankcase (ME) 22 Nm (1 6 it-lb) Oil pump pickup tube to cranltcase (M6) 10 Nm (89 in-lb)
11 9-24 Lubrication System Oil pump, removing and installing (V-8) CAUTION- V8 engines: The oil pump fasteners (including the sprocket retaining nut) are known to vibrate loose. This can result in oil starvation and engine failure. Be sure to checlc oil bolts and nut tighness whenever the oil pump is accessible. If any fas- teners are found to be loose, remove them and reinstall with Loctite 8 and torque to specifications. - Remove upper oil pan, as described earlier, to gain access to oil pump. 4 If fitted, remove oil pump sprocket cover fasteners (arrows). Remove cover. * Unclip oil return line (A). 4 Remove oil pump sprocket nut (arrow) and sprocket together with drive chain. Unbolt oil pump mounting fasteners (arrows) and remove pump. Remove oil pressure relief valve and inspect as described later.
Lubrication System 4 Replace O-ring seals (arrows) on engine oil pipes. Oil seals lightly. CAUTIO& During reinstallation, do not damage O-rings on sharp edges of engine blocl
11 9-26 /Lubrication System < Use Allen wrench to adjust chain slaclc (B) by turning thread- ed spacer (A). Oil pump chain adjustment Slack 10 52 mrn (0.394i0.079 in) - Coat remaining oil pump mounting fastener with Loctite 03. In- stall and tighten. - Remainder of assembly is reverse of disassembly. - After adding engine oil, start and run engine. Raise engine speed to 2,500 rpm until oil pressure warning light goes out (about 5 seconds). Tightening torques Lower oil pan to upper oil pan M6 (8.8 grade) 10 Nm (89 in-ib) M6 (10.9 grade) 12 Nm (9 ft-lb) M8 (8.8 grade) 22 Nrn (1 6 ft-lb) Oil drain plug to oil pan (M12) 25 Nm (I8 ft-lb) Oil pump cover to oil pump (M6) 10 Nrn (89 in-lb) Oilpump sprocket to shaft TKO) 45 Nm (33 it-lb) Oil pump to engine bloclc M8 (8.8 grade) 22 Nrn (16 ft-lb) Oil pressure relief valve (&cylinder) Remove oil pump as described earlier. The oil pump pressure relief valve is held in the side of the oil pump with a circlip. < Inspect oil pump relief valve components and bore for scor- 4. Sleeve 5. Circlip - Install using a new circlip. Oil pressure relief valve assembly ,- ..., !~. -.-~. - ~- -~!~~-% h. .- .,, /to-cy~~noer engrnej ing or other damage. 1. Control plunger 2. Spring 3. Sealing O-ring
11 9-27 Lubrication System Oil pressure relief valve (V-8) 4 Remove oil pressure relief valve retaining circlip. Use a suitable drift to remove relief valve assembly from pump. CAUTION-- There is high spring pressure in the relief valve. 4 Inspect oil pump relief valve components and bore lor scor- ing or other damage. 1. Control plunger 2. Spring 3. Sleeve 4. Circlip - Install using a new circlip.
120 lgnition System ...................... General Special tools ................... Warnings and cautions ........... Engine management ............. ................. lgnition system Ignition system. troubleshooting .... ... Oscilloscope diagnostic diagrams ................ Misfire detection ............. Ignition System Service 120-9 .................... Ignition firing order 120-9 .............. Disabling ignition system 120-10 ................... Checking for spark 120-1 0 lgnition coil assembly. ................. testing and replacing 120-1 0 .............. Crankshaftspeedsensor 120-12 ............. Camshaft position sensors 120-1 4 ...................... Knocksensors 120-16
Ignition System This repair group covers component troubleshooting and re- placement information for the ignition system. When diagnosing engine management problems, including on-board diagnostics (OBD 11) fault code analysis, also refer to these repair groups: * 130 Fuel Injection * ELE Electrical Wiring Diagrams OED On-Board Diagnostics Special tools System diagnosis and testing of the ignition system requires special test equipment. 4 LED test light (Tool No. Baum 1 1 15) 4 Automotive digital multimeter 4 Primary voltage test harness (Tool No. BMW 12 7 020) - 4 Secondary voltage test harness (Tool No. BMW 12 7 030)