723
Model Code Page
42. Gearbox
1. 8. 1998
6000--8750 424 1
8. 11. 1990
1. Reconditioning differential (Op. no.
424)
Note! If reconditioning the differential only, then remove:
--- P T O u n i t (see Op. no. 462 1A)
--- final drives/brake housings
--- d i f f e r en t ia l ( see Op. no. 423 2A)
Note! For detaching the brake housings, raise the cab or split
the tractor between the gearbox and fuel tank according to
Op. 423 1A.
A. Changing the differential side bevel
gear bearings and the differential lock
discs
1. Remove the crown wheel attaching screws and remove the
differential cover.
2. Press the piston forthe differential lock out of the casing half
using compressed air but be careful. Change the o---rings on
the piston.
3. Change the bearing for the differential side gear. Remove
the bearing using a drift and fit the new bearing using ETV
891870.
4. Lubricatethe o---ringson the pistonand pushthe pistoninto
place.
5. Lift off the crown wheel. Remove the friction and steel discs
and lift out the differential side gear.
6. Drive out the tubular pin (8 mm) locking the differential
pinion shaft and tap out the shaft. Lift out the differentialpinion
and the right differential side gear.
Note! In the tractors which have higher engine outputs there
are four differential pinions in the differential, at which time the
short pinion shafts have been secured with tensio n pins.
7. Remove the right side differential side gear using a hammer
and a drift. Fit a new bearing using ETV 891870.
8. Lubricatethe bearing and fit the right---hand sidedifferential
side gear in position. Lubricate the differential pinions and
place them in the differential casing. Drive the shaft for the dif-
ferential pinions into place.
9. Fix the shaft in position with the tubular pin.
Note! On models 6600---6900 and 8050---8750 the shorter
pinion shafts are locked with two tension pins.
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