SECTION 7
TRANSMISSION
from link in the pump.
the o-rings do not slip from their- grooves. Torque bolts to
19-21 ft.-lbs. (2.66-2.90 kg-m).
NOTE:
Caution must be taken to prevent these parts
7-189.
REPLACEMENT OF HIGH-PRESSURE RELIEF
from falling into the pump housing. A clean
VALVES.
rag placed in the opening will help to prevent
accidentally dropping parts into housing.
7-190. REMOVAL.
d. Remove orifice and o-rings from control valve (see
a. Apply a wrench on HEX portion of the valve and
figure 7-60). Check to ensure that orifice is open.
unscrew from manifold block (see figures 7-56 and 7-57).
7-194. INSTALLATION.
NOTE: There are two relief valves in the manifold block.
a. Install orifice tip down, and new o-rings in control
7-191. INSTALLATION.
valve.
a. Prior to installation, inspect o-rings and back-up
b. Install new gasket on control valve (dry).
rings for damage.
c.
Install pin in control valve links and pump links.
b. Apply a lubricant to the o-ring and install in the
manifold block.
d. Place washer in pin, install the cotter pin and
spread.
c.
Torque valves to 20 ft.-lbs. (2.76 kg-m).
7-192. REPLACEMENT OF DISPLACEMENT CONTROL
NOTE:
Caution must be taken during installation of
VALVE.
these parts to prevent them from falling into
the unit.
Lightly coating the parts with
7-193. REMOVAL.
petroleum (NOT grease) is advised.
a. Remove the control linkage from the displacement
e. Install valve to motor and torque the nine (9) bolts
control valve assembly.
to 10-11 ft.-lbs. (1.38-1.52 kg-m).
b. Remove the nine (9) capscrews holding the valve to
the pump housing (see figure 7-58).
7-195. REPLACEMENT OF MOTOR OR PUMP SHAFT
SEAL.
c. Lift the valve away from the housing and remove
the cotter pin and washer (see figure7-59). Remove pin
FIGURE 7-56.
FIGURE 7-57.
7-40.