Hubs (Code No. 672) - Valtra 6000 Workshop Manual

67. Powered front axle Carraro
Hubs
(Op. no. 672)
1. Reconditioning hubs
A. Changing planet gears/bearing rollers
1. Apply parking brake. Place wedges on the both sides of
the rear wheels. Disconnect the battery cables.
2. Raise the tractor front end and support it with sturdy axle
stands. Remove front wheel(s).
3. Turn the hub so that the oil draining/filling plug (3) is in
the rear position. Unscrew the plug and drain the oil into a
suitable vessel (1,5 litres oil in both hubs)
B
4. Unscrew two hexagonal socket head bolts (A) in re-
cesses. B is the hub large o---ring.
5. Tap with a soft mallet the planetary carrier (hub cover)
out and pry it out with two fitting levers.
6. Fasten the planetary carrier e.g. in a vice.
1. 10. 1999
7. If the planet gears/bearing rollers must be changed, un-
screw bolts (B) and remove the thrust washers. Take care
of the locking pin (C), if it releases.
8. Remove the planet gears and washers under them.
Do not mix the planet gear bearing rollers. Change, if
necessary, the bearing rollers (28 pcs/gears).
Note! If the stud bolts must be changed, they cannot be
separately removed and changed but the whole planetary
carrier must be changed. The studs have press fits and
they must be pressed into place during fitting.
9. Fit the washer, bearing rollers and planet gears and fit
B
the thrust washers and tighten the bolts to 80 Nm. Ensure
that the locking pins remain in their locations.
Note! The bearing rollers can be fastened with a little
grease when assembling them.
10. Check the hub large o---ring, change if necessary.
Grease the o---ring.
11. Push the planetary carrier (hub cover) into place and
tighten the two socket head bolts to 25 Nm
12. Fill the hub with 1,5 litres oil (80W/90 GL ---5 (LS), e.g.
Valtra Axle.
13. Fit the front wheel(s), remove the supports and test---run
the tractor. Check for leaks.
1019
Model Code Page
8450-- 8950 672 1