Graco Z-Pump Elite Series Instructions Manual page 16

Repair
5. Apply grease to the o-ring (145) and the two throat
seals (126). Install the o-ring (145) into the upper
most groove of the throat cartridge (119). slide
O-ring (125) over the boss end of the throat
cartridge (119). Place first throat seal into the throat
cartridge (119) and ensure the first throat seal
spring faces towards the bottom of the throat
cartridge. Using a suitable size socket or dowel,
press the throat seal to the bottom of the throat
cartridge
6. Place the second throat seal (126) into the throat
cartridge (119) ensuring the spring side faces up
toward the throat retainer (118). Using a suitable
size socket or dowel, press the second throat seal
into the throat cartridge until it contacts the first
throat seal. See F . 20.
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125
145
119
F . 20
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7. With the outlet housing (107) mounted securely in a
vice, Install the throat retainer O-ring (120) onto the
throat retainer (118). Place the retainer into the
outlet housing (107)
8. Apply anti-seize to the threads on the throat
retainer (119) and thread it into the outlet housing
(107). When fully threaded together torque the
throat retainer to 200 ft-lbs. (
107
118
F . 21
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16
118
126
.
See F
271 N•m).
6
9. Install cylinder o-rings (101) on pump cylinder (103)
and crossover tube o-rings (102) on crossover
pump tube (104). Lubricate o-rings with grease.
See F . 22.
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102
101
103
F . 22
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10. Install pump cylinder (103) and pump crossover
tube (104) in outlet housing (107) with a rubber
mallet. See F
120
104
. 21
.
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F . 23
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11. Lubricate piston seal (117), and piston bearing
retainer (116) with grease.
NOTE: For 160cc pumps, place the cylinder installation
tool (150) over the end of the pump cylinder (103) to
help guide the displacement rod (115) during
installation. See F
104
. 23..
IG
. 24 page 17.
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102
101
103
107
3A8563B