SERVICING THE INDIVIDUAL PARTS
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ASSEMBLING THE MAIN SHAFT (4-SPEED)
–Clamp the main shaft in a vise with the thread facing down (use
protective jaws).
– Carefully oil all parts before assembling.
– Mount the distance bushing (1) and the 3rd/4th gear sliding wheel
(2) with the small gear wheel facing down.
–Slip on the distance bushing (3) and the 2nd fixed gear (4) with the
inscription facing up, tap with a rubber hammer to the stop if
necessary.
– Finally, check all gears for smooth operation.
1
2
3
4
GENERAL INFORMATION ON WORKING WITH THE TRANSMISSION
Clamp the main shaft or countershaft in a vise (use protective jaws). Remove the gears.
NOTE: if the 2nd fixed gear cannot be removed from the main shaft, use the extractor
590.29.033.000 to pull it off together with the 6th idler gear.
Check the following parts for wear or seizing marks:
–Bearings
–Pivot points on the main shaft and countershaft and pivot points on the idler gears
– Shift dogs of the gears
–Tooth faces on all of the gears
–Tooth profiles on the main and countershaft as well as the corresponding gears
– Check all of the sliding gears for smooth operation in the profile
Carefully clean all parts and replace any damaged parts.
Always mount new circlips when you repair the transmission.
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