Pump Disassembly - Graco Z-Pump S1 Series Instructions - Parts Manual

Repair

Pump Disassembly

1. Relieve pressure and flush system. Follow
Pressure Relief Procedure and Flushing, page
10.
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 . 8
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 . 9
IG
7. Remove inlet housing (106) from pump cylinder
(103). Remove pump crossover tube (104) and
o-rings (102). See F
IG
14
. 8.
IG
clamp here
107
IG
106
. 10.
107
F . 10
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
displacement rod will shorten pump life.
106
9. Remove displacement rod (115) from pump
cylinder (103). See F
105
115
. 9.
F . 11
IG
10. Remove two o-rings (101) from pump cylinder
(103). See F
105
101
F . 12
IG
11. Place outlet housing (107) in vise so throat cartridge
(118) is facing up.
102
104
115
103
. 11.
IG
. 12.
IG
103
106
102
103
101
3A0019ZAC