Discovery 2. Manual - part 412
ENGINE - TD5
REPAIRS 12-1-45
Refit
1. Clean rocker shaft and mating faces.
CAUTION: If rockers or rocker shaft are to
be replaced, ensure replacements are
correct. Engine Serial No. Prefixes 10P to
14P are fitted with type A rocker arms and
shaft. Engine Serial No. Prefixes 15P to 19P
are fitted with type B rocker arms and shaft.
Type B rocker arms and shaft may be fitted
to Engine Serial No. Prefixes 10P to 14P as
an assembly.
2. Fit new rocker adjusting screws fully into rocker
arm. Fit new lock nuts to screws but do not
tighten.
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.
3. Fit rocker shaft ensuring it is located on dowel.
4. Fit and progressively tighten new rocker shaft
bolts to 33 Nm (24 lbf.ft).
5. Before refitting the camshaft cover the
electronic injection unit (EUI) rockers must be
adjusted.
6. Remove tool LRT-12-058 from camshaft.
7. Rotate engine clockwise until No 1 injector lobe
is at full lift.
8. Rotate rocker adjusting screw clockwise until
the injector plunger is felt to bottom out.
9. Rotate rocker adjusting screw anti-clockwise
one complete turn to give plunger the required
bump clearance and tighten rocker arm
adjusting screw locknut to 16 Nm (12 lbf.ft) .
CAUTION: Ensure screw does not turn as
locknut is tightened.
10. Carry out above procedure for the remaining 4
rocker arms.
11. After completion of rocker arm adjustment,
slowly rotate engine clockwise 2 complete
turns by hand to ensure that no injectors are
bottoming out on their plungers.
12. Fit camshaft cover gasket.
ENGINE - Td5, REPAIRS, Gasket -
13. Fit cooling fan coupling.