Repair Manual

33
REAR BEARING ELEMENTS
33 - 29
CAST IRON REAR DRIVE AXLE DIFFERENTIAL
By means of a → 5 mandrel, attach and push the G 5 – 40 elastic pin.
Mount the second propeller shaft pinion in the rim.
Mount the rim on the casing by means of the ten M 11 x 22 screws ( use new ,self locking
screws).
Tighten them at the moment of 9 – 11 daNm.
On the side towards the flange mount the following items:
- the adjustment washer ( the values of the adjustment washers are measured every 5/
100 and are within the range: 1,45 – 2,85 mm )
- the bearing washer;
- the 30 x 72 x 28,75 conical balls bearing;
- the oil deflector;
- the 42 x 72 x 12 annular oil seal.
NOTE:
When assembling the cardanic flange, check the wear of the contact surface with
the annular oil seal.
Attach the nut retainer , tighten the flange nut and lock it.
After remounting and performing the required adjustment operations, make the sealing test,
and than fill up with T 90 oil the drive axle differential casing.
T
IGHTENING MOMENTS
- Axle cap attachment screws................................................... 1,5 - 2daN.m
- Tooth rim attachment screws................................................... 9 - 11 daN.m
- The screws of the differential adjustment nuts retainers................ 2 daN.m
- The differential drive pinion nut............................................ 9 - 11 daN.m
The two conical balls bearings shall be mounted by pressing on the differential casing.
Press the outer ring of the small bearing and the outer ring of the big bearing in the differential
casing; for which, previously ,the adjustment washer required for the conical distance measure-
ment has been selected and attached.
Place the differential drive pinion in the casing; the 35 x 80 x 32,75 conical balls
bearing being already mounted on it.
The differential assembly is attached and mounted in the casing, with the bearings resting in the
half bearings.
The screws from the bearings caps shall be tightened at a moment of 4 – 5 daNm.
Tighten the bearings adjustment nuts.
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