Repair
14
3A0537M
Repair
Disassembly
NOTE:
The 3000 and 4000cc pumps are easiest to
repair when left in the Part No. 218742 accessory pump
stand and disassembled as instructed in the lower man-
ual. For repair at a remote location, have another pump
stand available.
1.
Relieve the pressure, see
Pressure Relief Proce-
dure
page 10.
2.
Disconnect the hoses from the lower and plug the
ends to prevent fluid contamination.
3.
See F
IG
. 4. Remove the 2-piece shield (122) by
inserting a screwdriver straight into the slot, and
using it as a lever to release the tab. Repeat for all
tabs.
Do not
use the screwdriver to pry the shields
apart.
4.
Loosen the coupling nut (105) and remove the col-
lars (106). Remove the coupling nut from the piston
rod (R). Unscrew the locknuts (104) from the tie
rods (103). Separate the motor (101) and lower
(102). See F
IG
. 4.
5.
To repair the air motor or lower, see the separate
manuals listed under
Related Manuals
on page 2.
Reassembly
NOTE:
If the coupling adapter (108) and tie rods (103)
have been disassembled from the motor, see on page
15.
1.
See F
IG
. 4. Assemble the coupling nut (105) to the
piston rod (R).
2.
Orient the lower (102) to the motor (101). Position
the lower on the tie rods (103). Lubricate the
threads of the tie rods. Screw the tie rod locknuts
(104) onto the tie rods. Torque the tie rod locknuts to
50-55 ft-lb (68-75 N•m).
3.
Insert the collars (106) into the coupling nut (105).
4.
Tighten the coupling nut onto the motor shaft (S)
and torque to 150 ft-lb (203 N•m).
5.
See F
IG
. 4. Install the shields (122) by engaging the
bottom lips with the groove in the wet-cup cap (C).
Snap the two shields together.
6.
Flush and test the pump before reinstalling it in the
system. Connect hoses and flush the pump. While it
F
IG
. 4. Disassembly and Reassembly of the Shields
ti15759a
Shield Disassembly
ti15770a
ti15757b
ti15758b
Shield Reassembly
