Hatz 2-4M40 - Timing Cover

–
Preparations:
– Take off the exhaust silencer (muffler);
see A 03.00.
– Take off the air guide housing;
see M 35.00 (engines with enclosure
only)
– Take off the fan; see M 13.00.
– Take off the engine shutdown device;
see M 20.00.
Dismantling
Timing cover without hydraulic pump
drive:
– Pull the hose off the crankcase breather
valve (100/1).
Note:
From 2 L 40.14, 3/4 L 40.13, M 41 and on
the M 31, M 40 and M 41 the hose con-
nection (101/2) for the crankcase breather
has been moved to the top of the crankca-
se. The valve (101/1) was bonded into the
air intake pipe until early 1987. Since then
it has been secured in the air intake pipe
by two O-rings.
– Remove the circlip (102/1) and coil
spring (102/2) from the pull rod of the
engine shutdown device.
From early 1996 an additional cup
spring and an O-ring have been installed
to seal the pull rod.
– Unscrew and remove the belt pulley
(102/3) and the machine screws holding
the timing cover.
– Pull off the timing cover and remove the
gasket.
Checking parts:
– Check the timing cover for cracks or un-
evenness of the sealing surface.
– Examine the shaft sealing ring for dama-
ge and renew if necessary.
– Press off the breather valve cap and
examine the diaphragm for damage.
3
L / M . . 09.96
100
101
102
M 11.00 Timing cover