Repair Manual

REAR BEARING ELEMENTS
33
33 - 16
PLATE DRIVE REAR AXLE DIFFERENTIAL
MOUNTING CONDITIONS
1. Adjustment of the conical distance 54
0
mm
between the rim axis and the front
surface of the pinion head.
- 0,1
2. The propeller shafts and the differential pinions shall be selected so that a
maximum 0,1 mm clearance is obtained in the whole differential assembly, one propeller
shaft being locked, the moment required for the rotation of the propeller shaft should be
maximum 1 daN.m.
3. The geared rim shall be adjusted so that the clearance between the pinion and
the rim measured on the outer diameter of the rim is between 0,12 – 0,25 mm, measured in
three points, placed at 120
0
.
4. The resistant moment due to the initial tightening of the differential bearings,
without differential drive pinion, shall be between 0,12 – 0,15 daNm , measured within
the range of the gear clearance.
5. The rotation moment of the differential drive pinion, without the mounted rim,
is
0,15 - 0,20 daN.m.
DIFFERENTIAL ADJUSTMENT
To be performed before and upon
remounting
This implies three operations :
1. Adjustment of the conical distance
2. Adjustment of the gearing clearance
3. Adjustment of the differential bearings
1. ADJUSTMENT OF THE CONICAL DISTANCE
It supposes to measure and correct the distance between the front face of the differential
drive pinion and symmetry axis of the rim.
The following operations shall be performed:
- place the outer housing of the bearing in the differential casing;
- place the conical balls bearing;
- place the 8512 41196 – 08 standard gauge and then place the 8151 – 5544 gauge
checking device.
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