TD5 Defender
ENGINE
17
OVERHAUL
3. Using a vernier, check internal diameter of each
rocker arm, take 2 measurements at 180
°
.
Rocker arm internal diameter =27.0 to 27.013
mm (1.102 to 1.103 in)
CAUTION: Any ovality must be within
limits given.
Rocker shaft - Assembling
1. Fit new spring ring to groove in rocker shaft.
2. Lubricate rocker shaft journals and rocker arms
with engine oil.
3. Fit rocker arm to shaft ensuring that it is in its
original fitted order.
4. Fit new spring ring to retain rocker arm.
5. Repeat above procedures for remaining rocker
arms ensuring they are in their original fitted
order.
6. Fit new rocker adjusting screws and locknuts to
rocker arms; do not tighten screws fully into
arms at this stage.
CAUTION: Ensure screws are correct for
type of rocker arms fitted. Replacement
screws for Engine Serial No. Prefixes 15P
to 19P have a centre punch mark adjacent to the
adjusting slot. These screws are not
interchangeable with those fitted to Engine Serial
No. Prefixes 10P to 14P.
Cylinder head - Assembling
1. Lubricate new valve stem oil seals with engine
oil.
2. Using tool LRT-12-071, fit valve stem oil seals.
3. Lubricate valve guides, valve stems, valve
spring caps and springs with engine oil.