Scotsman NS650 User Manual page 29

REMOVAL AND REPLACEMENT:
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.
Note: Save the shims.
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.
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.
Note: If the gearcase cover was replaced, the
replacement part was shipped with a certain
number of shims. The number of shims used
must match the number on the gearcase
cover. Do not use the old shims unless there
is a shortage.
Bench test the gearmotor, check for oil leaks,
noise, and amp draw.
December, 1988
Page 29
NS650