Hatz 2-4L31 - Cylinder Head Water-Cooled Engines

–
Preparations:
– Drain the coolant and unscrew the coo-
lant lines from the cylinder head.
– Take off the exhaust system and ex-
haust manifold.
– Take off the air cleaner and detach the
air intake flange.
– Remove the injectors.
Dismantling:
– Take off the cylinder head cover; Fig. 85.
– Slacken off the shouldered nuts by half a
turn (85/4) in the reverse order shown in
Fig. 86 or 87.
– Unscrew and remove the nuts in the
same order. Unscrew the hex nuts (85/5)
with spring washers (85/6) and take off
the rocker pedestals.
– Lift off the cylinder head.
– Take off the pushrods and protective
tubes.
– Take off the cylinder head gasket and
sealing rings.
Checking the cylinder head:
– Visual inspection for cracks in webs.
– Visual inspection of cylinder head sea-
ling face for unevenness.
– Check pad radius on rockers for wear.
3
L / M . . 09.96
85
86
87
M 07.00 Cylinder head
M 07.30 Water-cooled engines (H.L 30)