Priming Piston Service
Priming Piston Service
Disconnect the Pump
1. Remove the pump from the fluid container.
Operate it to pump out as much fluid as possible.
2. Follow the
Pressure Relief Procedure, page 8
.
3. Ram-mounted pumps: Remove the three clamps
(C) holding the pump to the ram plate. Raise ram
to lift pump.
C
C
C
ti16567a
F igure 2 Remove the clamps.
4. Remove the fluid hoses from the pump.
5. Release the upper clamp (123) holding the
displacement pump to the tie rod plate (122).
6. Slide the pump down from the air motor. Tilt the
pump and pull the displacement rod (117) out of
the coupler (C). Remove the gasket (102).
Note: Be careful not to scratch the displacement
rod.
C
123
122
102
117
ti15719a
Figure 3 Remove displacement pump.
Disassemble the Pump
Note: Pump Repair Kit 24G550 is available.
Purchase the kit separately. Kit parts are marked
with an *.
1. Remove the retaining pin (116) from the
connecting rod (109). Slide off the priming piston
(108).
2. Release the lower clamp (123) to remove the
intake valve housing (107) from the pump
cylinder (101). Remove the gasket (102).
3. Remove the poppet (114), spring (113), and
valve stop (111) off the connecting rod (109).
4. Remove the bearing (112) from the center of the
valve stop (111).
5. Remove the packings (115) from the center of
the poppet (114).
123
115 107
108
116
102
114
112
113
111
109
101
ti15639a
Figure 4 Remove priming piston.
6. Push the displacement rod (117) out through the
bottom of the cylinder (101).
3A0733P
11
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