Repair manual

Repair PS2 500, PSA2 500

Repair.fm 78

6.3.3.1 Impeller Disassembly

Note: Draining oil is not required to disassemble and inspect the

impeller (aq) or volute (af). However, drain oil if further

disassembly and testing is required.

1. Turn pump on its side.

2. Remove three bolts (aj) and the strainer (ai).

3. Remove suction cover (ah), suction plate (ag) and volute (af).

4. While keeping the impeller and rotor shaft from rotating, remove

acorn nut (ae), lockwasher (ad) and washer (ac).

Note: Impeller vanes may be very sharp due to excessive wear.

Handle with care.

5. Remove impeller (aq).

6. Remove wear ring (an).

6.3.3.2 Impeller Inspection

1. Visually inspect impeller (aq) for corrosion, wear or damage. Worn

impellers compromise peak performance.

2. Visually inspect impeller key and rotor shaft keyway for signs of

uneven wear.

3. Visually inspect volute (af) for cracks, wear and damage. Look for

signs of wear on volute cutwaters and surfaces facing the impeller.

6.3.3.3 Impeller Clearance

PS2 500 and PSA2 500 are equipped with a semi-vortex impeller. It

has no specific clearance requirements.

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