300Tdi Discovery
12
ENGINE
8
REPAIR
CAMSHAFT DRIVE BELT AND GEARS
Service repair no - 12.65.18
TIMING BELT
Remove
1. Remove front cover plate.
See Front Cover
Plate
2. Position engine at TDC on No. 1 cylinder.
3. If manual gearbox: Remove blanking plug from
flywheel housing and insert timing tool
LRT-12-044. If EDC - timing tool LRT-12-085
must be used.
If automatic gearbox:Sited to the rear of the
engine sump on engine backplate is a blanking
plate. Remove 2 blanking plate bolts and insert
timing tool LRT-12-044 into the larger bolt hole.
4. Engage timing tool pin with slot in flywheel.
5. Check correct alignment of timing mark on
camshaft gear and that crankshaft key aligns
with cast arrow on housing.
6. Insert pin from special tool LRT-12-045 in
injection pump gear and through into pump
flange.
NOTE: If the camshaft gear is to be
removed during these operations its
retaining bolt should be slackened before
the timing belt is removed.
7. Slacken belt tensioner bolt.
8. Remove idler pulley.
9. Remove timing belt.
NOTE: During use, a belt develops a wear
pattern relative to its running direction, if
the original belt is to be re-used it must be
refitted so that it rotates in the original direction.
CAUTION: Belts must be stored on edge
on a clean surface and in such a manner
that bends are not less than 50 mm radius.
Do not bend belts at an acute angle or radius of
less than 50 mm, otherwise premature failure
could result.
10. Mark belt direction of rotation, using soft chalk,
to ensure correct refitment.
