12
Lift off spring retaining plate
19
.
13
Remove the spring
20
and oil baffle
21
.
14
Turn the assembly over and knock the clutch shaft on a
piece of aluminium (or wood) to loosen the piston
22
.
Note:
If the piston does not loosen when the clutch shaft is
knocked on aluminium, then hand pump air down the shaft
oil inlet hole.
15
Remove the piston
22
. Remove and discard the piston
'O' ring
23
and shaft 'O' ring
24
.
131 - 2
Section F
9803/3280
Section F
131 - 2
Issue 2*
Powershift Gearbox
Note:
The illustration shows a layshaft assembly for a 6 -
speed transmission. The layshaft assembly for a 4 - speed
transmission has some small differences. An explanation of
the differences will be given as they occure in the procedure.
1
Carefully remove piston ring seals
1
.
Note:
If the piston ring seals are excessively worn then
check for burrs or damage on shaft grooves. If necessary
remove burrs with a fine grade abrasion paper and oil.
2
Remove taper roller bearing
2
using a suitable puller or
press.
3
Remove circlip
3
and withdraw the 4 wheel drive
transfer gear
4
. Make a note which way round the gear
is fitted for assembly. The 2 wheel drive machines have
a spacer fitted instead of a gear.
4
Withdraw the gear and splined hub
5
together with thin
thrust washers
6
and thrust bearing
7
.
5
Remove the two needle roller bearing assemblies
8
.
4-speed transmissions have only one needle roller
bearing fitted.
6
Remove the thin thrust washer
9
, thrust bearing
10
, thin
thrust washer
9A
(if fitted) and thick thrust washer
11
.
7
If end bearing
12
is to be removed it must be renewed.
Remove the bearing using puller. Discard the bearing.
Note:
This bearing would not normally be removed unless it
was damaged. If a collet tool is not available, then it is
permissible to use standard bearing puller, although damage
to the bearing cage may be incurred which will require a new
bearing.
8
Remove the clutch friction/counter plates retaining
circlip
13
.
9
Remove pressure end plate
14
and shim
15
, if fitted.
10
Remove the clutch friction plates
16
and counter plates
17
. Keep them together in sets, DO NOT mix the plates
with those from other clutches.
11
Position clutch assembly in a suitable press, with a cut
away tube compress the piston spring as shown, then
remove circlip
18
.
PS760 - Layshaft Clutch - Dismantling
A401360
18
*