Repair manual

PS4 7503HH, PS4 7503HF, PS4 11003HH, PS4 11003HF Repair

Repair.fm 201

3. Removethreestudbolts(bi) and three washers (bh).Remove

three bolts (bb), three washers (ba) and suction cover (bg).

—Remove any gaskets (bf) between suction cover and volute.

These gaskets are used as shims to adjust impeller clearance.

4. Using a pneumatic wrench, remove acorn nut (be).Remove

lockwasher (bd) and thread cover (bc).

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

Handle with care.

5. Remove impeller (br).

—A puller tool, part number 0151080, may be required.

6. Remove the key (bs) from the rotor shaft for inspection.

6.8.3.2 Impeller Inspection

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

impellers will compromise peak performance.

2. Visually inspect impeller key (bs) and rotor shaft keyway for signs

of uneven wear.

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