F-1031, Section 4307
Page 4 of 12
Disassembly and Removal of the Driven Shaft from the Chain Case Cap
1.
Remove four (4) cap screws (T133) that fasten housing (T31) to cap (T65)
and remove housing (T31).
2.
Straighten tab of lock washer (T32) from slot in lock nut (T33) and then
remove the locknut (T33). A punch and hammer or lock nut socket
required.
3.
Before 9/87, remove flinger ring (T138) and its driving grommet (T137)
from the end of the driven shaft (T135). Between 9/87 and 8/93, remove
V-style flinger (T138). After 8/93, remove boot (T138).
4.
Remove four (4) cap screws (T133) that fasten housing (T23) to cap (T65)
but do not remove the housing (T23).
5.
Under a press, support the assembly on the face of housing (T23) and
apply a press load to the slot end of the driven shaft (T135) and press
shaft out of bearings (T25), spacers (T95) (T29) and sprocket (T26).
Remove spacers and sprockets.
6.
Remove housing (T23) and bearings (T25) from cap (T26). Remove and
discard oil seal (T19) from housing (T23).
Disassembly of Coupling Shaft Assembly
1.
Remove housing (T42) from shaft assembly if not previously removed.
2.
Pull outer bearing (T1 or T15) from shaft (T44); oil seal sleeve (T14) will
come off with the bearing. Remove spacer (T2), pull inner bearings (T1 or
T15) from shaft.
Due to closeness of this bearing to hub end of shaft (T44), a split plate
type puller may be necessary.
3.
Tap out pilot bearing (T3) if still in coupling shaft (T44) by using a punch
through the two access holes in the coupling shaft for this purpose.
Disassembly of Drive Shaft Assembly
1.
Slide shift collar (T4) from teeth on drive shaft (T13).
2.
Remove housing (T11) from bearing (T15) and press oil seal (T45) from
housing (T11). Discard oil seal.
3.
With suitable puller, remove tachometer gear (T10) and sleeve (T14).
4.
This step applicable only to units with 2.35”, 46T, 20/40 involute spline
end.
Units Built Prior to 2/10/00
a.
Remove spacer (T104).
b.
Remove snap ring (T105).
Units Built After 2/10/00
a.
Remove spacer (T239).
5.
Place shaft and sprocket assembly in an arbor press in a vertical position
with the spline end up and supported on the bottom face of sprocket (T5).
Press shaft out of bearing (T15) and sprocket assembly. Catch shaft to
avoid damage.
6.
Remove needle bearings (T6) from sprocket (T5).
Miscellaneous
1.
Remove any remaining fittings or hardware.
Inspection and Repair
Refer to general instructions concerning inspection of bearings and their cleaning; in addition, check for the following:
S
Bent shift shaft
S
Bent shift fork
S
Worn shifter shoes
S
Loose shifter shoe studs (prior to 4/21/06)
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Damaged locking arm assembly, sector gear or bent pivot pin
S
Condition of oil hoses
S
Oil seals, if not discarded
S
Worn sprocket teeth
S
Worn flanks on inner chain links
S
Outside guide links of chain not retained by “riveted over” pins
S
Wear on inner faces of outside guide links of chain
S
Badly worn pointing on teeth of shift collar, and similar wear on teeth of
drive shaft and coupling shafts
S
Worn or damaged oil seal sleeves
S
Damaged or dirty sump oil strainer
S
Worn oil pump - If oil pump does not operate properly or shows signs of
damage, it must be replaced. Check to make sure pump turns freely and
drive tang is not damaged. If in doubt, contact factory for instructions.
S
Damaged splines on drive, coupling and driven shafts.
Summary of Contents for Y Series
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