Repair Manual

MANUAL GEARBOX
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REPAIR
The mounting of the hub I – II can be performed in two variants :
1.By difference of temperature (for gearbox
made until 26.04.1999 , series 172321).
Place the velocity steps I – II synchroniser
hub on electrical stove , at a 120° C, dgr
temperature , and keep it there for about 15
minutes , to heat it.
2. Without difference of temperature
( for gearbox made after 26.04.1999, series
172321).
The pressing force for the hubs I – II
and III – IV will be max. 2000 daN.
Press the assembled hub until it comes into
contact with the velocity step I pinion lock.
Center the three wedges in the synchronising
ring grooves.
Remove the false wedge.
Mount the hub I – II washer.
Mount the velocity step II pinion together with
its synchroniser ring.
Mount the velocity step II pinion washer.
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