Repair
42 313289W
Pump Assembly
Prior to servicing the pump assembly you must first
remove either the entire pump assembly or the
displacement pump and air motor individually.
Remove Pump Assembly
1. Follow Pressure Relief Procedure, page 17.
2. Close ball valve on hopper outlet assembly.
3. Disconnect displacement pump from fluid inlet
assembly.
• 50:1 Pump: disconnect reducer bushing fitting from
swivel fitting on fluid inlet assembly.
• 70:1 Pump: disconnect reducing swivel from fluid
inlet assembly.
Refer to your Double Wall Stainless Steel Hopper
manual to service or repair the fluid inlet assembly.
4. Disconnect air motor.
a. Disconnect sensor cable, air line, and ground
wire from air motor.
b. Remove mounting screws (4) and washers (3)
holding air motor (2) to mounting bracket. See
illustration in Remove Air Motor section.
5. Remove pump assembly by lift ring on air motor.
6. Refer to your Xtreme Displacement Pump manual
to service or repair the displacement pump. Refer to
your XL Air Motor manual to service or repair the air
motor.
7. Follow steps in reverse order to reinstall pump
assembly.
Reducing
Swivel
Swivel Fitting
Reducer
Bushing
Ball Valve
Do not lift pump assembly by the lift ring when the
total weight of the pump assembly exceeds 550 lb
(250 kg).
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