Graco 313289s important safety instructions Remove Pump Assembly, Remove Displacement Pump

Repair

Pump Assembly

Prior to servicing the pump assembly you must first remove either the entire pump assembly or the displace- ment pump and air motor individually.

5. Remove pump assembly by lift ring on air motor.

Do not lift pump assembly by the lift ring when the total weight of the pump assembly exceeds 550 lb (250 kg).

Remove Pump Assembly

1.Follow Pressure Relief Procedure, page 12.

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

Reducer

Bushing

Ball Valve

r_256170_312747_6d

NOTE:

Refer to the Double Wall Hopper manual 312747 to ser- vice 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.

6.Refer to Xtreme Displacement Pump manual 311762 to service or repair the displacement pump. Refer to NXT Air Motor manual 311238 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 displace- ment pump; the air motor will remain installed.

1.Follow Pressure Relief Procedure, page 12.

2.Disconnect displacement pump from fluid inlet assembly. See steps 2 and 3 under Remove Pump Assembly, page 44.

3.Remove clip (133), and slide coupling cover (134) up to remove coupling (132).

134

132 133

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44 313289S