786
Model Code Page
443. 4WD clutch
6000--8750 443 4
1. 1. 1995
15. 5. 1993
C. Changing 4WD output shaft seal on
t r a c t o r s w h i c h h a v e 2 --- s t e p q u i c k --- s h i f t
gear
1. Drain the oil from the gearbox.
2. Remove the propeller shaft guard and disconnect the pro-
peller shaft rear flange joint.
3. Open the output shaft nut (ETV893 260) and remove the
spacer ring and the drive flange. Remove the old seal and fit
a new one with sleeve ETV 891 900.
4. Fit the o---ring, drive flange, spacer ring and tighten the nut
fully home and then unscrew one a turn.
4. Connect the propeller shaft flange joint (35 Nm), fit the
guard plate and fill the gearbox with oil .
Note! The front end of the propelles shaft guard has been at-
tached with the front axle attaching bolts. Tightening torque
for these bolts is 380 Nm.
D. Changing 4WD output shaft seals on
t r a c t o r s w h i c h h a v e 3 --- s t e p q u i c k --- s h i f t
gear (Delta Powershift)
The oil seal and seals of piston ring type can be changed as
follows:
1. Remove the propeller shaft undershield. Disconnect the
propeller shaft front end flange joint and pull the shaft for-
wards until its rear end releases from the splines on the 4W D
output shaft.
2.Draintheoilinthegearbox(max.50litres).
3. Unscrew the 4WD output shaft nut using spanner ETV 894
170. Remove the oil seal wear ring and its o---ring on the shaft.
Disconnect the pressure oil pipe from the output shaft seal
housing.
4. Unscrew the seal housing bolts and pull off the housing.
Removetheoilsleeveontheshaft.Onthesleevetherearefit-
ted the seals of piston ring type.
5. Change damaged parts. Apply universal grease to the oil
seal lips. Carefully push the oil sleeve into the sealing housing
fully home against the ball bearing.
6. Carefully fit the sealing housing. Ensure that the o---ring is
in place. Fit the protective plate and tighten the housing bolts.
7. Place the o---ring onto the shaft and then the wear ring.
Tighten the shaft nut using ETV 894 170 first fully home and
slacken it then one and a half turn.
8. Connect the 4WD clutch pressure oil pipe. Fit the propeller
shaft and its undershield. Fill the transmission with oil.
Note! The propeller shaft undershield front end is fixed with
the front axle attaching bolts. Tighten the bolts to 380 Nm.
9. Test---run the tractor and make sure that the 4WD clutch
functions and that there are no leaks.
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