Repair manual

Repair PS4 7503HH, PS4 7503HF, PS4 11003HH, PS4 11003HF
Repair.fm 190
6. Visually inspect the thermal switch (as) for damage to insulation
materials, water or oil intrusion, heat discoloration of bi-metal disc,
or damage to bi-metal disc.
—Check to assure the lead wires of the stator windings are
correctly and securely connected to the protector.
—Check for disconnection of lead wires, short-circuit, coil-burn, or
incorrect wiring.
7. Visually inspect oil lifter (ck).
—\Replace if worn or broken, paying particular attention to internal
paddles.
Note: The condition of the oil lifter not only effects lubrication, but
cooling as well.
6.8.2.3 Motor Testing
Test Stator Insulation Resistance
1. Dry stator thoroughly and allow it to cool before testing.
2. Measure resistance between stator’s lead wire and motor frame
using Megger tester.
—Replace stator if test results fall below 20 M
Ω.
Test Stator Continuity
Test continuity between phase wire ends.
—Replace stator if any breaks are found.
wc_gr000644
as
ck
wc_gr000595