Section XIII. HYDRAULIC PUMP ASSEMBLY
d. Remove the two nuts, lock washers, and
bolts securing the hydraulic pump to the pump
The complete hydraulic pump assembly con-
sists of a hydraulic pump air motor, a flexible
pump with or without the flexible coupling.
coupling, and a hydraulic pump. The air motor
e. Remove the eight bolts and lock washers
drives the pump and furnishes all hydraulic
securing the hydraulic pump air motor to the
power to the hydraulic valve for operation of
f. Loosen the remaining setscrew on the
a. Disconnect all hoses and fittings.
flexible coupling and separate the flexible
b. Remove the four nuts, lock washers, and
coupling from the shaft.
hydraulic pump assembly from the boom base.
Note. If necessary to replace only the air motor,
flexible coupling, or hydraulic pump, follow the re-
quired procedure given below.
c. Loosen the setscrew on either side of the
flexible coupling, depending on which unit is
to be removed.