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Input shaft > < Gear change forks: repairs
Secondary shaft for 1st to 4th gear: general fitting diagram
Secondary shaft for 1st to 4th gear: general fitting diagram
  Note
t  Fixing gearbox to installation stand → Chapter.
t  If the secondary shaft or roller bearings are replaced, the secondary shaft must be adjusted.
t  Whenever new meshes or a new secondary shaft are fitted consult the technical data.
t  Replace both conical roller bearings together.
   
1 - Clutch housing
2 - Oil relay washer
3 - Disc-shaped washer
q   Remove → Fig.
q   Insertion → Fig.
4 - Outer ring of roller bearing
q   Remove → Fig.
q   Insertion → Fig.
5 - Interior ring of roller bearing
q   Releasing → Fig.
q   Insertion → Fig.
6 - Secondary shaft for 1st to 4th gear
q   Adjusting
7 - Needle bearing for the 2ª gear
8 - 2nd gear mobile pinion
9 - Synchronizer ring (interior ring of the 2nd gear
q   Check for wear → Fig.
q   Check that the tabs show no signs of wear
q   Fitting position → Fig.
10 - Outer ring for 2nd gear
q   Replace this if there is grooves or treads caused by wear
q   Fit to the synchro ring → Item
q   Fitting position → Fig.
11 - Synchromesh ring of 2nd gear
q   Check for wear → Fig.
q   Fitting position → Fig.
12 - Mobile sleeve/synchroniser body of the 1st and 2nd gear
q   Release along with the 2nd gear mobile pinion → Fig. following the removal of the securing ring → Item
q   Dismantling → Fig.
q   Assembling the mobile element/synchroniser body → Fig.
q   Fitting position → Fig.
q   Insertion
13 - Circlip
14 - Synchromesh ring of 1st gear
q   Check for wear → Fig.
q   Fit so that the grooves insert on the locking elements of the mobile element → Item
15 - Outer ring for 1st gear
q   Replace this if there is grooves or treads caused by wear
q   Fit to the synchro ring → Item
q   Fitting position → Fig.
16 - Synchronizer ring (interior ring of the 1st gear)
q   Check for wear → Fig.
q   Check that the tabs show no signs of wear
q   Fitting position → Fig.
17 - Needle bearing for the 1ª gear
18 - 1st gear mobile pinion
q   Fitting position → Fig.
19 - Thrust ring for the 1st and 4th gear
q   2 units
q   Insert the thrust ring tab into the hole of the secondary shaft
20 - Packing plate
q   Keep the thrust rings → Item in place on the secondary shaft
21 - Needle bearing for the 4ª gear
22 - 4th gear mobile pinion
23 - Synchromesh ring of 4th gear
q   Check for wear → Fig.
24 - Mobile sleeve/synchroniser body of the 3rd and 4th gear
q   Release along with the 4th gear mobile pinion → Fig. following the removal of the securing ring → Item
q   Dismantling → Fig.
q   Installation position of the mobile element/synchroniser body → Fig.
q   Assembling the mobile element/synchroniser body → Fig. and → Fig.
q   Insertion → Fig.
25 - Circlip
26 - Synchromesh ring of 3rd gear
q   Check for wear → Fig.
27 - Outer ring for 3rd gear
q   Replace this if there is grooves or treads caused by wear
q   Fit to the synchro ring → Item
q   Fitting position → Fig.
28 - Synchromesh ring (interior ring for 3rd gear)
q   Check for wear → Fig.
q   Check that the tabs show no signs of wear
q   Fitting position → Fig.
29 - Needle bearing for the 3ª gear
30 - 3rd gear mobile pinion
q   Fitting position → Fig.
31 - Interior ring of roller bearing
q   Remove → Fig.
q   Insertion → Fig.
32 - Circlip
q   If the conical roller bearing socket → Item and the secondary shaft → Item are replaced then → Fig. must be re-established
33 - Outer ring of roller bearing
q   Remove → Fig.
q   Insertion → Fig.
34 - Shim
q   Determine thickness
35 - Gearbox casing

   

Input shaft > < Gear change forks: repairs