991
Model Code Page
64. Powered front axle
1. 1. 1994
6000--8750 644 9
6. Change the piston seal and the o---ring in the axle housing
groove.
7. Change the metal ring sealing r ings.
8. Apply grease to the sealing rings..
9. Push the metal ring with its seals into its location fully home.
Fit the piston together with its dowel. Fit the differential bear-
ing race and shims, if removed..
10. Fit the thrust bearing ring into the piston recess. Fix it, if
necessary, with a little grease.
11. Fit the other thrust bearing ring and its roller ring onto the
differential. Fix with grease, if needed.
12.Fitthe differential unit intotheaxlehousing sothat thedrive
shaft splines guide into the differential side gear.
13. Check and grease the axle section o---ring. Place the axle
sections to the correct position and tighten the bolts to a
torque of 190 Nm.
14. Rotate the hub by hand. It must rotate quite easily.
15. Connect the tie rod to the steering arm (160 Nm). Fit the
front wheel ( 550 Nm). Fill the axle housing with oil. Test---run
the tractor and assure that the lock functions. Check for leaks.
B. Changing the disc pack
1.Removethedifferential,seeOp. A paragraphs 1 --- 3 .
2.Removethepressuresleevesnapringandthespring(not
necessary).
3. Pull out the pressure sleeve together with the spring seat
and the o---ring behind it .
4. Take away the disc pack.
5. Oil new discs. Fit by turns steel disc and friction disc into the
differential housing. First and last the steel disc (11 friction
discs and 12 steel discs).
Note! It is better to change the whole disc back than separate
discs.
6. Place the pressure sleeve on the disc pack. Fit the o---ring
(fit a new o---ring, if t he earlier one was damaged).
7. Fit the spring seat, spring and the spring snap ring (if
removed).
8. Fit the differential unit, see Op. A paragraphs 10---15.
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