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Section F
132 - 2
PS760 - Mainshaft Clutch - Dismantling
Note: The illustration shows a mainshaft assembly for a 6 -
speed transmission. The mainshaft assembly for a 4 - speed
transmission has some small differences. An explanation of
the differences will be given as they occure in the procedure.
The mainshaft assemblies for the 6 - speed and the 4 -
speed transmission are the same basic construction, except
the 4 - speed transmission have fewer friction/ counter
plates.
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 puller or press.
3
Withdraw the gears 3 and 4. Make a note which way
round the gears are fitted for assembly.
4
At the opposite end, use a suitable puller to remove the
taper roller bearing 5.
5
Remove the clutch friction/counter plates retaining
circlip 6.
6
Remove the pressure end plate 7 and shim 8, if fitted.
Remove the clutch friction plates 9 and counter plates
7
10. Keep them together in sets, DO NOT mix the plates
with those from other clutches.
8
Position clutch assembly in a suitable press, with a cut
away tube compress the piston spring as shown, then
remove circlip 11.
9803/3280
Transmission
Powershift Gearbox
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9
Lif t o f f sp ring ret aining p lat e 12. The 4 - sp eed
transmissions have a different shaped spring retaining
plate fitted.
Remove the spring 13 and oil baffle 14.
10
11
Turn the assembly over and knock the clutch shaft on a
piece of aluminium (or wood) to loosen the piston 15.
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.
12
Remove the piston 15. Remove and discard the piston
'O' ring 16 and shaft 'O' ring 17.
13
Remove circlip 18 and withdraw the clutch housing 19
from the shaft. Remove and discard the 'O' ring 20.
11
Section F
132 - 2
A401360
Issue 1
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