982
Model Code Page
64. Powered front axle
8. 11. 1990
6000--8750 644 2
6. Check the friction disc for wear and change if necessary.
Measure the total thickness of the set of discs. It should be in
the range 14, 51---14,69 mm. Immerse the discs in oil before
reassembling.
N.B. In the event of replacement, renew both the RH and LH
pack. The thickest disc with internal teeth should be fitted with
the smooth side against the differential side gear. Next fit fric-
tion disc and intermediate disc alternatively. The last disc
should have external teeth.
7. Also check both differential pinions and side gears and
change if necessary. Oil all parts.
N.B. The differential pinion shaft is locked by means of the
locking pin. The diff. pinion thrust---washers are fitt ed so that
the locking lugs engage in the grooves on the differential
carrier.
8. Reassemble the differential and fit the carrier halves so that
the marks are in the same places as they were before dis-
mantling. Fit the crown wheel and tighten the screws to 70
Nm.
9. Fit the locking pins. First fit the bigger pin and then the
smaller pin inside with the split pointing towards the heads of
the screws
10. Rotate the differential with the splined end of the drive
shaft. The drive shaft should turn freely, without resistance.
11. Fit the differential unit into the housing and attach the
bolted joint of the axle housing. Check the o---ring on the joint
and apply grease to it. Tighten the screws to 190 Nm.
12. Attach the tie---rod to the steering arm (160 Nm). Fill the
differential housing with oil. Test---run the tractor.
2. Changing crown wheel/pinion shaft
Note! This operation is easier if the front axle is detached from
the tractor. However this is not essential.
A. Re moving differential
1. Remove the front axle (Op. no. 641 A). Drain the oil from the
differential housing.
2. Detach the tie---rod from the steering arm on the side with
the shorter axle section.
3. Unscrew the bolted joint on the axle housing.
4. Remove the differential unit. Detach the old crown wheel.Fit
a new crown wheel and tighten the screws to 70 Nm.
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