Gearmotor; To Remove And Repair - Scotsman NM650 Service Manual

REMOVAL AND REPLACEMENT: Gearmotor
//////////////////////////////WARNING////////////////////////////
Disconnect Electrical Power Before
Begining Removal Procedures.
///////////////////////////////////////////////////////////////////////////
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.
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 two smaller gears and the oil
should be in the lower case, the output gear
will be with the cover.
COVER &
OUTPUT GEAR
ASSEMBLY
GEAR CASE
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.
January, 1991
Page 29
WATER SHED
SEAL
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.
NM650
CENTRIFUGAL
SWITCH
AUGER
DRIVE MOTOR
ROTOR BEARING
SEAL