Rocker Cover; To Remove And To Fit - Perkins 1000 Series Workshop Manual

12
CYLINDER HEAD ASSEMBLY

Rocker cover

1
2

To remove and to fit

12A-01
Engines are supplied with either an aluminium
rocker cover (A) or with rocker covers made of a
composite material (12A.04/A). The aluminium
cover on some engines, has a dust seal which is
fitted between the rocker cover and the induction
manifold. The dust seal of the composite rocker
cover is fitted permanently to the side of the rocker
cover with adhesive.
PA045
To remove
1 Disconnect the breather pipe.
2 Remove the cap nuts (A2) together with the steel
washers and the shim washers (12A-04/A) from the
top of the rocker cover.
3 Lift off the rocker cover and the joint. For
aluminium covers, remove the rocker cover dust
seal (A1).
Caution: When the rocker cover is fitted, the cap
nuts are tightened onto the nuts of the rocker
brackets. During removal of the cap nuts, it is
possible to loosen the nuts of the rocker brackets.
The nuts of the rocker brackets should be tightened
to the correct torque every time the cover is
removed.
Perkins Phaser/1000 Series, April 1995 12A.03