Mahindra 35 Series Service Manual page 105

Timing Gear Train, Front Cover & Camshaft
Camshaft
Fig. 1
35 Series 4WD, Model - 3535, 4035, 4535 and 5035 SM June'08
A. DESCRIPTION
1. GEAR TRAIN
The timing gear train consists of four gears.
The Crankshaft pinion, the camshaft gear, the idler
gear and the injection pump gear. These gears
are mounted on the front plate face of the engine
and are covered with the aluminium casting
crankcase front cover. Each gear is punch marked
for timing purpose.
2. CAMSHAFT
The special cast iron/forged camshaft runs in
babbit lined bushes in the right hand side of the
crankcase. The camshaft bushes are replaceable
and are supplied for service in a semi-finished
bored condition and must be line reamed to size
after filling. A gear integral with the camshaft
provides the drive for the oil pump.
The camshaft is driven from the front end of the
crankshaft through a train of gears. All gears are
punch marked to ensure correct timing. End float
is controlled by thrust washer plate (4-3). The drive
gear is key shrunk to the camshaft end.
B. FRONT COVER
1. Removal
a) Remove the fan belt and fan as detailed in cooling
system.
b) Remove the bolt (2-1).
c) Remove front side hydraulic pump mounting bolts
pull hydraulic pump out somewhat and move
slightly towards the outside.
d) Pull the fan driver pulley (3-1) off the crankshaft
and remove the key.
e) Remove alternator and alternator bracket.
f) Remove the bolts from the front cover bottom
and adapter plate.
g) Remove the bolts (1-1) securing the front cover
(4-1) then remove the cover and gasket.
NOTE: Check the backlash between the gears to
specifications if necessary.
2. DISMANTLING
Press out the oil seal if inspection proves it
necessary.
3. ASSEMBLY
Press in a new oil seal with the lip facing inward
until it is flush with the outside face of the front
cover.
4. INSTALLATION
Reverse the removal procedure.
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