C-44
35 Series 4WD, Model - 3535, 4035, 4535 and 5035 SM June’08
Fig. 4
Lubrication Systems
c) Check the drive shaft to pump body clearance to
specifications.
d) Check the drive pinion for wear or damage.
e) Check the gears for wear, damage or pitting.
Burrs can be removed from the gears using a fine
carborundum stone. The oil pump plate can if
necessary be ground flat using surface and
carborundum paste.
f) Check the backlash between the gears to
specifications.
g) Check the clearance between the gears and end
plate as follows :
1. Install the gear case on the pump body using
a new gasket.
2. Install the gears, then place a length of
plastigauge across the top of each gear.
3. Install the end cover using a new gasket and
tighten the bolts to the specified torque.
4. Remove the cover and measure the thickness
of the plastigauge. This must not exceed the
dimension given in specifications.
h) All sealing rings and gaskets must discarded.
If the clearance is excessive check the end plate
using a straight edge and feeler gauges.
If necessary, the end plate can be ground flat using
a sheet of crocus paper on a surface plate.
Assemble the end plate and re-check the clearance.
i) If no clearance exists, insert one additional gasket
and re-check the clearance.
j) Check the clearance between the oil pump drive
pinion and the body after the pump is assembled
(Fig. 4).
6. ASSEMBLY : LOBE TYPE PUMP
Install the rotor shaft assembly in the oil pump body.
Fit the key in to the shaft and press in the drive gear
with that in the shaft. Drive in a new roll pin. Install
the outer rotor. Install the pump end over and tighten
the bolts to the correct torque. Assemble the screen
to the pump and tighten the bolts to the correct torque.
Assemble the relief valve inside the pump body and
install the spring. Tighten the retaining bolt using a
new washer.
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