Engine Overhaul Manual v8 4.0 4.6
ENGINE
OVERHAUL
3
Rocker shafts - assembling
1. Assemble rocker shafts with identification
groove at one o’clock position with push rod
end of rocker arm to the right.
CAUTION: Incorrect assembly of rocker
shafts will lead to an oil feed restriction.
2. Fit new split pin to one end of rocker shaft.
3. Fit plain washer and wave washer.
4. Lubricate rocker arm bushes with engine oil.
5. Fit rocker arms with offsets as illustrated.
6. Assemble rocker arms, brackets and springs to
rocker shaft.
7. Compress springs, fit wave washer, plain
washer and secure with new split pin.
Rocker shafts - refit
1. Lubricate pushrods with engine oil.
2. Fit pushrods in removed order.
3. Fit each rocker shaft assembly, ensuring
identification groove is uppermost and towards
front of engine on RH side and towards rear of
engine on LH side.
CAUTION: Incorrect fitment of rocker
shafts will lead to an oil feed restriction.
4. Fit bolts and starting at centre brackets, tighten
to 38 Nm (28 lbf.ft).