Pins
Check differential spider pin and final epicyclic reducer planetary holder pin surfaces for damaging; otherwise both
pins are to be replaced. Follow the same procedure for pin housings.
Axle shafts
Check for excessive wear: splines should not be nicked and permit a free gear movement.
Spider forks should not be warped and bearings shall slide freely.
Gears
Make sure all gear toothing is neither worn nor damaged, teeth should work on the whole contact face.
Bearings
Examine bearings for proper working conditions, ensure they show neither excessive radial nor end play.
Holding the bearings pressed by hand and making simultaneously turn in both directions of rotation, these should slide
freely and no sliding friction felt.
TIGHTENING TORQUES
drive axles - axles
4-W.D. front axle
Before tightening all screws should be degreased and cleaned.
kgm Nm
Differential/bevel gear securing screws 7.5 73
Bevel pinion fixing nut 21 to 23 206 to 226
Bearing holding flange securing screws 9.7 95
Fork flange securing screws 5.5 54
Axle swivelling pivot securing screws
- rear pin 14.5 142
- front pin 9.1 89
Engine front support securing screws 30 294
Hydraulic cylinder fixing pin 16 157
Ball-and-socket joint castellated nuts 12 119
Transmission shaft flange securing screws* 5 49
Differential housing half securing screws 11.5 to 12 113 to 118
*Coat the nut with a small amount of Loctite 242.
Check periodically that the wheel bolts are correctly tightened.
r Front wheel bolts 2WD (M20x1,5) 490 Nm (50 kgm);
r Front wheel bolts 4WD (M18x1,5) 360 Nm (36,8 kgm);
r Rear wheel bolts (M20x1,5) 490 Nm (50 kgm).
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