Repair Manual

MANUAL GEARBOX
21
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Mount :
- the velocity step IV pinion and its
synchroniser ring;
- the adjustment washer for the conical
mechanism distance, recovered upon
dismounting;
- the biconical bearing;
- the spacer;
- the velocity step V pinion;
- the elastic washer.
Mount the speedometer endless screw (G.B.
365).
Mount the speedometer endless and flange
of the secondary shaft (G.B. 51 C).
Tighten the velocity step I, in a soft dies vice.
Engage gearbox in speed I.
Tighten at the required moment
(10-12 daN) the secondary shaft flange nut or
speedometer endless screw by means of the CV
204 wrench.
The speedometer endless screw shall not be
locked by straining in order to enable adjustment
of the conical distance.
Check the clearance (J) between the
synchronising rings of the velocity steps I
and
II and the sid es of th e hub : J = min.0,2 mm.
The check shall be performed as follows:
- the pinion in contact with the hub;
- the synchronising ring in contact with the
pinion con.
Check in the same way also the clearance of
the synchroniser rings of the velocity step III and
IV.
REPAIR
vnx.su