Repair
14
3A2851A
Repair
Required Tools
•
Rubber mallet
•
Set of adjustable wrenches
•
Torque wrench
•
Thread lubricant
•
Anti-seize lubricant
•
Loctite
®
2760
™
or equivalent
Replace the Lower
1.
Flush the pump, if possible. Stop the pump at the
bottom of its stroke. Relieve the pressure, page 10.
2.
Disconnect the air hose.
3.
Hold the fluid outlet fitting (AD) with a wrench to
keep it from loosening while you disconnect the fluid
hose. See F
4.
Disconnect suction hose.
5.
Remove clip (108), and slide coupling cover (104)
up to remove coupling (103).
6.
Hold the tie rod flats with a wrench to keep the rods
(106) from turning. Unscrew the nuts (107). Remove
the lower (102).
7.
To service the lower, refer to manual 311762, sup-
plied. To service the air motor, refer to the separate
motor manual, supplied.
8.
Follow the steps in this procedure in reverse order to
reconnect the lower.
NOTE:
Torque nuts (107) to 50-60 ft-lb (68-81 N•m).
NOTICE
Use at least two people when lifting, moving, or dis-
connecting the pump. If disconnecting the lower, be
sure to securely brace the pump, or have two people
hold it while another disconnects it.
Before disconnecting the lower (102) from the
motor (101), be sure to note the relative position of
the pump's fluid outlet to the air inlet of the motor. If
the motor does not require servicing, leave it
attached to its mounting.
F
IG
. 3
TI8264a
103
104
108
TI8301a
106
107
102
101
AD
102
