SECTION 7
TRANSMISSION
c. Pull charge pump away from the main pump. Use
g. Plug or cap all ports to prevent contamination.
caution not to drop aluminum spacer.
7-179. REMOVAL OF HYDROSTATIC MOTOR
CAUTION: Do not use sharp tools to pry charge pump
(see figure 7-46).
from main pump. A scratch on the sealing
surface may cause leakage. If charge pump
a. Remove hydrostatic motor inspection plate on the
does not pull loose, tap LIGHTLY on the side
right-hand side of the frame.
of the charge pump with a plastic hammer to
break paint or gasket seal.
b. Disconnect high-pressure lines. Plug or cap ports
on hoses. Remove the by-pass valve linkage.
7-182. INSTALLATION (see figures 7-48 and 7-49).
c. Support the hydrostatic motor and remove the four
(4) motor mounting bolts.
a. Install a new gasket. Make sure that the new gasket
is properly installed as shown in figure 7-48. If positioned
d. Carefully pull the motor far enough out of the motor
wrong, the relief valve port will be covered by the gasket.
carrier to remove the case drain line. Plug or cap all hoses
and ports to prevent contamination of the hydrostatic
b. Line the drive tank on charge pump shaft with the
system.
slot on the main pump shaft (see figure 7-49). The charge
pump should assemble freely with the main pump. Do not
7-180. REPLACEMENT OF CHARGE PUMP.
force charge pump into position. Hold aluminum spacer in
position with fingers to prevent its dislodging.
7-181. REMOVAL (see figure 7-47).
c. Torque the four (4) mounting bolts 10-11 ft. -lbs. (1
a. Remove the line connecting the charge pump to the
38-1.52 kg-m).
reservoir and plug to prevent draining of the reservoir.
Remove the connector fitting.
d. Install the connector to charge pump and torque to
14-20 ft.-lbs. (1.93-2.76 kg-m).
b. Remove the four (4) capscrews.
e. Install the line from the reservoir to the connector
NOTE:
Do not remove the capscrews at the top and
on the charge pump.
bottom of the charge pump (see figure 7-47).
FIGURE 7-47.
FIGURE 7-46.
7-37.