Pump Assembly - Graco XM Series Repair Parts

Repair

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 13.
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.
Reducing
Swivel Fitting
Swivel
Refer to your Double Wall 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.
34
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).
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.
Remove Displacement Pump
Follow these instructions for removing only the
displacement pump; the air motor will remain installed.
1. Follow Pressure Relief Procedure, page 13.
2. Disconnect displacement pump from fluid inlet
assembly. See steps 2 and 3 under Remove Pump
Assembly, page 34.
3. Remove clip (133), and slide coupling cover (134)
up to remove coupling (132).
133
134
132
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