F-1031, Section 4307
Page 1 of 12
Introduction
This instruction provides the necessary steps required to overhaul the Y Series transmission with separable spline joint between the transmission and the pump
impeller shaft.
Remove all accessories (priming pump assembly, manifold drain valve) prior to removing the transmission from the pump.
The text below frequently uses “references numbers” when discussing specific parts. These numbers refer to the parts called out on the Service Parts List
included with the pump manual.
Disassembly
Note that these instructions apply for out of chassis overhaul of the transmission.
Propeller Shaft Disconnect and Accessory Removal
1.
Disconnect the propeller shafts from the drive and coupling shafts. The
companion flanges or end yokes attached to the transmission shafts can
be left attached to the transmission and removed later.
2.
Disconnect the tachometer cable, shift override linkage and shift wiring.
3.
Remove parking brake, if equipped, as follows:
a.
Remove the cotter pin (T12) and lock nut (T43) on units built prior to
4/20/98 or self-locking nut on units built after 4/20/98.
b.
Pull companion flange and drum assembly off spline of coupling shaft.
Disconnect linkage to brake operating arm.
c.
Remove bolts fastening brake assembly to coupling shaft housing and
remove brake assembly.
4.
Disconnect primer motor wiring and hose and remove priming pump if it is
mounted on the transmission, or if it is separately mounted and would
interfere with removal of the transmission. As various types of priming
pumps are available, see separate instructions covering the type furnished
with the transmission.
5.
Disconnect manifold drain valve.
6.
Drain oil from the transmission.
Electric Shift
7.
Remove shift assembly, bracket and manual shift linkage (if equipped).
Pneumatic Shift
8.
Remove air lines and manual shift linkage (if equipped) from the shift unit.
Shift unit can be left in place until the case is removed from the pump if
desired.
NOTE: If shift unit is removed, do not disturb adjusting screws (T86).
Take care not to lose adjusting screw retainers (T87) which are exposed
when the bracket is removed.
Removal of Transmission from the Pump
1.
Remove all but two fasteners holding the chain case to the pump body.
NOTE: Quantity removed could be two or six depending on when the
case was built.
2.
Loosen remaining two fasteners to keep the transmission attached until
ready for removal.
3.
Support the transmission via a support from the floor, transmission jack or
sling from above.
4.
Remove the two remaining cap screws.
5.
To assist with separating the transmission from the pump, install at least
two (2) cap screws in the tapped holes in the flange of the pump and use
these screws to push the transmission off its spline fit with the impeller
shaft until it is free. Lower the transmission and remove from under the
chassis.
CAUTION
The pump impeller shaft is retained from axial movement by the bearing in
the housing at the far end of the pump. This bearing could be damaged if the
spline joint requires unreasonable force to separate.
Содержание Y Series
Страница 14: ......
