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Servicing the Piston Rod - Outlet Valve
331-196
331-195
Piston
DISASSEMBLY OF THE OUTLET VALVE
REFER TO FIGURE 3
1. Disconnect the Fluid Pump following instructions on page 17 .
2. Place piston holder (331-195) in a vise. Slide piston into
the holder & lock in place with a 3/8” dowel (331-196).
3. Use a 1/4” allen wrench to unscrew the outlet seat retainer
(331-026) from the piston.
4. Remove the outlet seat (331-026), O-ring (331-100) and
outlet ball (331-027).
5. Inspect outlet ball & seat for wear. Replace as necessary.
6. While piston is still locked in the holder, install parts
back into the piston in the following order:
ball, outlet seat and O-ring
Before reinstalling the outlet seat support, apply two drops of
Loctite No. 242 (blue) on the threads & torque to 20 ft-lbs.
Servicing the Suction Assembly
REFER TO FIGURE 4
1. Un-thread and remove suction nut from the uid pump body.
2. Remove suction seat (331-409), O-ring (106-011), suction ball
(331-030) and suction retainer (331-029).
3. Clean all parts and inspect them for wear or damage, replacing
parts as needed.
4. Clean inside of the uid pump body.
5. Reassemble lower suction valve assembly by placing the
suction seat (331-409), O-ring (106-011), suction ball (331-030)
& suction ball guide (331-029) in the suction nut (331-034) &
FIGURE 3
FIGURE 4
18
NOTE: Airlessco LP pump tool kit 188-197 is suggested for this task.
Kit includes: Packing Tightening Bar (189-211), Packing Removal Tool (331-153),
Piston Holder (331-195), 3/8” dowel (331-196).