Removal And Replacement: Gearmotor - Scotsman NSE650 User Manual

NSE650

REMOVAL AND REPLACEMENT: Gearmotor

To Remove and Repair the Gearmotor
Assembly:
(Assuming that the procedures through removal of
the water seal have been performed.)
1. Remove the electrical wires from the gear drive
motor.
2. Unscrew the 4 cap screws holding the
gearmotor to the base of the machine.
3. Remove the gearmotor from the icemaker.
Bench test the gearmotor, check for oil leaks,
noise, and amp draw.
To Inspect the gearmotor.
A) Remove the cap screws holding the
gearmotor case halves together and pry
the two cases apart.
B) To lift off the cover, lift up until you can
feel internal contact, then pull the cover
towards the output gear end, and then lift
the cover (with drive motor attached) up
and away from the gear motor case.
Note: The gearcase cover, output gear,
bearings and output shaft are a pressed
together assembly. Replace as a unit.
C) Inspect the oil, gears, and bearings. If
the oil level and condition is acceptable,
quickly check the gears and bearings.
They are likely to be fine if the oil is.
Electrical Shock Hazard.
Electrical shock can
cause personal injury.
Disconnect electrical
power before connecting
tester.
GEARCASE
COVER
If there is evidence of water in the oil (rusty
bearings and gears; the oil having a creamy white
appearance; oil level too high) carefully inspect the
bearings and gears. If in doubt about the condition
of a part, replace it. The oil quantity is 14 fluid
ounces, do not overfill.
Note: The gears and bearings are available only
as pressed together sets.
D) After replacing parts as required, (if any)
reassemble the gearcase. The two smaller gears
and the oil should be in the lower case, the output
gear will be with the cover. As you lower the cover
onto the lower case, the cover will have to be
moved closer to the second gear after the output
gear has cleared the second gear top bearing.
E) After the case is together, and the locating pins
are secure in both ends, replace all cap screws.
Bench test the gearmotor, check for oil leaks,
noise, and amp draw.
June 1994
Page 28
DRIVE
MOTOR
SEAL
FIRST GEAR
GASKET