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Displacement Pump Repair
WARNING
INJECTION HAZARD
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
Procedure on page 17.
NOTE: Packing Repair Kit 235–703 is available.
Reference numbers of parts included in the kit are
marked with an asterisk, i.e., (121*). For the best
results, use all the new parts in the kit, even if the old
ones still look good.
NOTE: To minimize down time, and for the best sprayer
performance, clean the transducer (see page 25) when-
ever you repack the pump. Replace these parts as need-
ed.
9
Fig. 26
Removing the pump
1. Flush the pump, if possible. Relieve pressure. Stop
2. Remove suction tube (32) and inlet tube (40).
3. Use a screwdriver to push the retaining spring (12)
4. Loosen the screws (17). Remove the pump (18).
Repairing the pump
Refer to Displacement Pump Manual 308–190, sup-
plied, for pump repair information.
12
21
107
17
(See Fig. 26.)
the pump with the piston rod (107) in its lowest
position, if possible.
(See Suction Tube, page 25).
up and push out the pin (11).
120
11
*122
18
*121
*119
30
118
Torque to
50 ft–lb (68 N.m)
Apply sealant
06933
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