REPLACING 3RD/4TH GEAR SET
- Output Shaft Removed -
Press off 4th gear.
Remove circlip.
Press off 3rd gear.
10 ton force for pressing off; 7 ton force for
pressing on.
Installation: Heat gears to 120 ... 150°C
(250 ... 300°F).
Important: Raised collar on bore of 3rd/4th gear
faces 2nd gear.

1st ... 4th gear synchromesh rings are identical.
Pull off input shaft.
Remove synchromesh ring (1) and needle bearing (2).
Important: Mark synchromesh ring for reuse
with same gear.

Remove circlip (3).
Remove shim (4).
Installation: Replace circlip.

Pull off synchronizer with operating sleeve (5),
synchromesh ring (6), 3rd gear (7) and needle
cage (8).
Important: Mark synchromesh ring for reuse
with same gear.
Check synchronization 23 23 503.


23 23 503