Pump Disassembly - Graco Z-Pump Elite Series Instructions Manual

Pump Disassembly

1. Relieve pressure and flush system. Follow
Pressure Relief Procedure and Flushing, page 9.
2. Remove inlet hose and drain inlet housing (106).
3. Using a bench vice, Horizontally clamp the pump
on outlet housing (107). Use a 1/2 in. hex bit socket
to loosen all four tie bolts (105) from inlet housing
(106).
4. For 20cc - 40cc pumps only: Use wrench to
remove rod adapter (121). See F
clamp here
121
F . 10
IG
5. Remove pump assembly from vise and lay on a flat
surface with towels or in catch pan.
6. Completely remove the tie bolts (105). See F
F . 11
IG
7. Remove inlet housing (106) from pump cylinder
(103). Remove pump crossover tube (104) and
o-rings (102). See F
3A8563B
. 10.
IG
clamp here
107
106
. 12.
IG
107
F . 12
IG
8. Pull pump cylinder (103) and displacement rod
(115) away from outlet housing (107).
Be careful not to scratch the displacement rod (115);
place it on a smooth working surface. Damage to the
106
displacement rod will shorten pump life.
9. Remove displacement rod (115) from pump
cylinder (103). See F
105
115
. 11.
IG
F . 13
IG
10. Remove two o-rings (101) from pump cylinder
105
(103). See F
101
F . 14
IG
11. Place outlet housing (107) in vise so throat cartridge
(118) is facing up.
102
104
115
103
NOTICE
. 13.
IG
. 14.
IG
103
Repair
106
102
103
101
13