fig.29
Fit VS4984 Holding Tool to the EXHAUST camshaft gear and
4.7.5
use to counter-hold whilst slackening the INLET camshaft gear
bolt (fig.29). Continue to counter-hold and slacken the
EXHAUST camshaft gear bolt (fig.29a).
fig.30
4.7.6 Remove the primary chain tensioner unit and back plate (fig.30).
fig.31
4.7.7 Remove the chain guide rails (fig.31) and the primary chain
(fig.31a).
4.7.8
Carry out the same procedure on the right-hand bank.
© Jack Sealey Limited
fig.29a
fig.31a
Original Language Version
Crankshaft gears
fig.32
4.7.9
IMPORTANT: The crankshaft gear is a two piece gear - make a
note of the orientation of the gear teeth. The teeth of the left
hand bank crankshaft gear (front) must be out of phase to the
teeth of the right hand bank gear (rear) (fig.32).
Camshaft gears / Secondary chains
fig.33
4.7.10 Remove the bolts of the inlet and exhaust camshaft gears and
discard old bolts (fig.33).
fig.34
4.7.11 Remove the gears, secondary chains and chain tensioners
(fig.34).
4.8
Installation chains and gears
NOTE: Early secondary chain tensioners must be
de-pressurised before re-fitting.
VS4980
Issue No: 3 (SP) 08/07/15
