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Repair
Displacement Pump Repair
Seal*, Packing**, and Valve
able. See page 26 for part numbers.
Disassembly
1. Separate the air motor from the displacement pump.
(See page 15.)
2. Loosen and remove screws (96). See F
3. Remove the valve housing (71). This allows access
to the pressure valve. Evaluate the ball (72
✦
seat (77
) and replace if worn.
The valve seats are dual-sided and can be turned
over and reused when one side is worn. The pro-
✦
file seal rings (75*
be replaced each time the seat is turned over or
replaced.
4. Remove the cylinder (79).
5. Remove the piston assembly.
Piston
Assembly
F
. 11
IG
21
✦
repair kits are avail-
. 11.
IG
✦
) and
✦
) or (97*
) and balls, should
96
71
✦
72
✦
77
✦
75
*
90*
73*
74
79
91
83
6. Remove piston valve (91) from the piston. Be care-
ful not to damage the surface of the piston during
repair and maintenance work. Use only the flats (Z)
to prevent the piston from rotating when removing
the screw. (See F
7. Note the positions and orientations of the guide ring
(76**), the U-cup (92**), and the sealing ring (94)
assembled onto piston valve (91). Remove these
parts and replace with parts from the appropriate
Packing Repair Kit (page 26).
8. Suction valve parts are now accessible. Evaluate
the ball (72
9. Remove the sealing ring (93**) from inside the pis-
ton (95) and replace.
10. Note the positions and orientations of the packing
retainer (85), the flat seal (84**), the guide ring
(82**) and the U-cup (81**) as you remove them
from the packing housing (83). Replace the soft
parts with those included in the packing repair kit.
See F
. 13.
IG
For replacement of seal (88*), see exploded view
on page 27.
TI2359ax
TI2360
F
. 12 Piston Assembly Breakdown
IG
. 12.)
IG
✦
✦
) and seat (77
) and replace if worn.
Z
91
76**
92**
94
93**
✦
72
✦
77
✦
97*
78
95
309512
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