Land Rover 300tdi Diesel Engine Overhaul 1997 Bookmarks Rover Manual

ENGINE
DESCRIPTION AND OPERATION17
Lubrication
The engine lubrication system is of the wet sump
type, oil pressure being provided by the rotor type oil
pump (1) driven directly by the crankshaft.
Oil is drawn from the sump (2) through the strainer
(3), suction pipe (4) and passes through internal
drillings in the cylinder block to an external, full flow
filter (5). Further drillings feed oil to the cylinder
block main oil gallery (6) which, in turn, supplies the
crankshaft main bearings (7). Cross...

ENGINE
18
DESCRIPTION AND OPERATION
Crankcase ventilation system
A breather cyclone unit (1), fitted to the right hand
side of the rocker cover controls the rate at which air
is purged from the sump, via a hose (2) from the
camshaft side cover to the rocker cover and extractsoil from the gaseous atmosphere. The oil then drains
back to the sump through a hose and flanged pipe
connection (3). The residues are drained-off from
the top of the cyclone breather and pass through a
hose (4) into the engine via...

ENGINE
OVERHAUL1
TIMING BELT, TENSIONER AND GEARS
Timing belt - remove
1.Position toolLRT-12-080to crankshaft pulley,
retain with 4 bolts.
2.Restrain crankshaft using toolLRT-12-080
and remove crankshaft pulley flange head bolt.
NOTE: Bolt and washer fitted to early
engines.
3.Remove toolLRT-12-080 .
4.Position toolLRT-12-049and thrust button,
part of toolLRT-12-031to crankshaft pulley,
remove pulley, recover Woodruff key.
5.Using sequence shown, progressively slacken
then remove 14 bolts securing timing...

ENGINE
2
OVERHAUL
6.Remove timing belt front cover.
7.Remove and discard gasket.
8.Remove and discard crankshaft front oil seal
from timing belt front cover.
9.Temporarily fit crankshaft pulley bolt to
crankshaft.
Manual gearbox
10.Remove plug from bottom of flywheel housing.
11.Rotate crankshaft clockwise using crankshaft
pulley bolt until toolLRT-12-044can be
located in slot in flywheel.
CAUTION: Do not rotate crankshaft
anti-clockwise and do not use camshaft or
fuel injection pump gear bolts to...

ENGINE
OVERHAUL3
All engines
13.Check that timing mark on camshaft pulley is
aligned with mark on timing belt rear cover and
the crankshaft Woodruff key is aligned with the
arrow cast on the rear cover.
14.Remove crankshaft pulley bolt.
15.Insert timing pinLRT-12-045into fuel injection
pump gear hub plate and injection pump hub.
16.Slacken but do not remove centre bolt securing
camshaft drive gear to camshaft.
17.If timing belt is to be refitted, mark direction of
rotation on outside surface of belt with...

ENGINE
4
OVERHAUL Timing belt tensioner and timing gears - remove
1.Remove crankshaft gear using tools
LRT-12-031andLRT-12-078,recover
Woodruff key from crankshaft.
2.Remove and discard O ring.
3.Remove bolt and slotted washer securing
timing belt tensioner pulley, remove pulley
together with tensioner bracket.
4.Recover flanged spacer from idler pulley stud.
5.Remove centre bolt and washer securing
camshaft timing gear, remove gear and hub
plate as an assembly.
NOTE: Later engines are fitted with a...

ENGINE
OVERHAUL5
6.Remove 3 bolts securing fuel injection pump
gear and hub plate to pump hub.
CAUTION: Do not remove nut securing
hub to fuel injection pump.
7.Remove timing pinLRT-12-045.
8.Remove fuel injection pump gear and hub
plate.Inspecting components
1.Check timing gear teeth for burrs.
2.Remove all traces of gasket from timing belt
front and rear covers using suitable gasket
removal spray and a plastic scraper. 

ENGINE
6
OVERHAUL Timing belt tensioner and gears - refit
1.Smear a new O ring with engine oil and fit to
crankshaft.
2.Fit Woodruff key in slot in crankshaft.
3.Fit crankshaft gear on to crankshaft and using
a soft mallet, tap gear fully home.
4.Position camshaft timing gear and hub plate to
camshaft, fit bolt and washer, finger tighten
bolt. Do not tighten bolt at this stage.
NOTE: Later engines are fitted with a
flange head bolt.
5.Position fuel injection pump gear and hub plate
to fuel injection pump...

ENGINE
OVERHAUL7
8.Position flanged spacer on idler pulley stud.
9.Fit timing belt tensioner pulley and bracket
ensuring that hole in tensioner bracket is
located on flanged spacer.
10.Fit slotted washer with the slot vertical and fit
bolt, finger tight.
11.Temporarily fit crankshaft pulley bolt to
crankshaft.
NOTE: Flywheel illustrated
12.
Manual gearbox:Rotate crankshaft clockwise
using crankshaft pulley bolt until tool
LRT-12-044can be inserted in slot in flywheel.
13.
Automatic gearbox:Rotate...

ENGINE
8
OVERHAUL Timing belt - refit and adjust tension
Refit
1.Using the fingers only, fit a new timing belt to
timing gears keeping slack portion of belt on
idler pulley side of belt. If necessary, rotate fuel
injection pump gear anti-clockwise to align
gear teeth with those of timing belt.
CAUTION: If original timing belt is to be
refitted, ensure direction of rotation mark
is facing correct way.
2.Fit idler pulley.
3.Fit idler pulley nut and tighten to 45 Nm.
4.Ensure that timing belt is correctly...