Graco Lube Pro 24Z020 Instructions Manual page 21

9. Install the spring (6) over the piston rod (34) and
install spring and piston rod into the air cylinder (3)
(F . 34).
IG
5
F . 34
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10. Apply a thin layer of grease to the cover o-ring (2).
Install the o-ring to cover (1) (F
11. Install the cover in bottom of air motor cylinder (3).
Push on the top of the cover to seat it and com-
press the spring. Use a wrench on the nut (1a) to
turn and tighten the cover securely, then torque to
28 to 32 ft. lbs. (37.9 to 43.4 N.m) (F
1a
F . 35
IG
3A4033J
6
3
. 35).
IG
. 35).
IG
1
2
3
12. Reposition the air motor cylinder in vise to access
the top of the air motor cylinder as shown in F
36.
F . 36
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Pump Piston Subassembly (33)
13. Apply a thin layer of grease to the piston seal (33).
Install the piston seal over the piston rod (34).
14. Install the star washer (32) and the lock nut (31) on
the piston rod (34), as shown in F
F . 37
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15. Use a wrench to tighten the lock nut (31).
Repair
.
IG
. 37.
IG
31
32
33
34
21