Rack Conveyor Dishmachine
Maintenance Instructions
Drive Motor & Gear
Reducer Replacement
07610-003-08-78 A
July 5, 2005
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6. Once the bolts are removed, the motor should slide out of the
gear reducer. Remember to support and lay it gently on the floor or
some other surface in order to continue working on it. Be sure that
you get the key, checking the keyway on the motor shaft and in the
gear reducer.
Removing the nuts securing the bottom cover.
4. Remove the bottom and set to the side so that it does not
become a trip hazard.
Removing the drive motor.
7. If the purpose of this maintenance action is to replace the drive
motor, continue to step 8. If you wish to replace the gear reducer,
continue to step 21.
8. With the motor laying on a level surface, you need to remove the
conduit from it. First, use the 1/4” nutdriver to remove the wiring
access cover on the back of the motor.
Removing the bottom cover.
5. With the cover removed you may now remove the bolts used to
connect the drive motor to the gear reducer. Note: you need to
support the motor as you remove the bolts; failure to do so could
result in the motor falling to the ground and becoming damaged.
Removing the wiring access cover.
9. Once the cover is removed and the wiring is exposed, you may
want jot down how your motor is wired. You can also refer to the
schematic located on the motor itself because how the motor is
wired when you remove it is how you will wire it when you replace
it. If you have any questions regarding the wiring of your motor, do
not hesitate to contact Jackson Technical Service.
10. pull the bundled wires out and remove the wire nuts. Set the
wire nuts to the side as you will need them when you wire up the
new motor.
Removing the bolts holding the drive motor to the gear reducer.
Rack Conveyor Drive Motor and Gear Reducer Replacement Instructions
Revision A (07/05/2005)
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Removing the wire nuts.
The WRONG way to mount the drive motor.
11. Once the wire nuts are removed, separate the wires.
12. With the flathead screwdriver and the hammer, loosen the con-
duit nut. Once loosened, pull the conduit away from the motor. The
motor may now be disposed of.
13. Remove the access cover off of the new motor.
14. Attach the conduit and pull the wires through the hole provid-
ed. Tighten the conduit nut.
15. Using the wire nuts, wire the motor back the same way the old
one had been. Refer to the schematic on the motor itself or contact
Jackson Technical Service if you any questions.
16. Once the wiring is done, carefully push wires back into the
motor and put the access cover back on. Tighten down the screws
for securing it.
The Correct way to mount the drive motor.
19. Reattach the bottom and top drive assembly covers.
17. The drive motor now needs to be reattached to the gear reduc-
er. There are two methods for doing this. The first is to try and and
reinsert the drive motor shaft into the gear reducer with it (gear
reducer) still attached to the unit. This is difficult but possible.
Ensure that the key is in the keyway when you mate the parts. The
second method and perhaps the easiest is to remove the gear
reducer, mate the two parts and bolt them together and then put
them on the unit at one time. This method takes a little more time.
If you wish to remove the gear reducer and assemble the two com-
ponents continue on to step 27.
20. Proceed to the sections entitled “AFTER MAINTENANCE
ACTIONS”.
21. (Continuing from step 7) To remove the gear reducer, first take
the 3/4” combination wrench and remove the drive hub bolt.
18. Once the motor and gear reducer are mated, secure them with
the locknuts and bolts. Ensure the bolts are tight.
Note: Because of the way the covers for the drive assembly are
designed, it is imperative that you position the motor on the gear
reducer so that the conduit fitting is facing towards the front of the
dishmachine. If it is facing away from the machine, the covers may
not go back on.
Removing the drive hub bolt.
Rack Conveyor Drive Motor and Gear Reducer Replacement Instructions
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Revision A (07/05/2005)
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22. Once the drive hub bolt & bearing are removed, loosen the set 25. Set the gear reducer on a flat surface. The drive hub needs
screw on the drive hub. There is no need to remove it.
tobe removed. You have already loosened the set screw, but it may
take some more effort to remove it. You may have pry it off, or give
it some taps with a mallet to coax it off of the shaft. The liberal use
of spray lubricants will also help.
Loosening the set screw with the 1/8 allen wrench.
23. Remove the gear drive by using the 9/16” socket and ratchet,
as well as the combination wrench as required, to remove the nuts
holding it to the mounting plate.
Removing the drive hub.
26. Once the drive hub is removed, place it on the shaft of the new
gear reducer. Ensure the key is in the keyway. Once it is on and
flush with the end of the shaft, tighten down on the set screw with
the 1/8” allen wrench.
27. As you have both the drive motor and the gear reducer off of
the machine, it is much simpler to assemble them together prior to
mounting them. Ensuring that the key for the drive shaft of the drive
motor is in the keyway.
Removing the nuts holding the gear reducer on.
24. Gently remove the gear reducer, careful not to drop it.
Mounting the motor to the gear reducer.
28. After the motor is mated against the gear reducer, turn the
motor so that the conduit fitting will face towards the front of the
dishmachine once both components are mounted to the frame.
This is to all the drive assembly covers to go back on. If you do not
do this, then there is a possibility the covers will not fit back on the
unit. Refer to step 18 and the note following for more details.
29. Stand the assembly up and secure them using the lockwash-
ers and bolts. Use the 9/16” combination wrench to tighten them
down.
Removing the gear reducer.
Rack Conveyor Drive Motor and Gear Reducer Replacement Instructions
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AFTER MAINTENANCE ACTIONS
Reconnect the incoming water (if disconnected) and turn
on. Then restore power to the unit. Run the unit for at least 10 min-
utes, running an empty rack through the machine to ensure that it
is carried all of the way through. If you hear any grinding sounds
while the motor is running, immediately shut off the unit and secure
power and water. There is a serious problem that must be
addressed. If any problems arise you can contact Jackson
Technical Service.
SPECIAL NOTES
Work performed on Jackson dishmachines by unautho-
rized or unqualified personnel may void the warranty. Before begin-
ning this or any other maintenance evolution on a unit under war-
ranty, you should contact a certified Jackson technician or Jackson
Technical Service. You can find a list of qualified service agencies
in the back of you unit’s installation manual.
Tightening the bolts to secure the drive motor to the gear reducer.
30. Once the motor is securely fastened to the gear reducer, care-
fully lift the assembly up and mount it on the fasteners. Be sure to
use proper lifting techniques to prevent injury.
SPECIAL PARTS
31. Once mounted, secure with the lockwashers and locknuts.
AJ-44/66/80 Machines:
Gear Reducer: 6105-011-71-88
Drive Motor Replacement Kit:
50 Hz: 6401-003-08-41
32. Reinstall the drive hub bearing and drive hub bolt, tightening
down with the 7/8” combination wrench.
60Hz/1 Ph: 6401-003-08-42
60 Hz/3 Ph: 6401-003-08-40
600 V/60 Hz/3 Ph: 6401-003-08-43
33. Reattach the bottom and top assembly covers.
AJ-54/76/90 Machines:
Gear Reducer: 6105-011-87-20
Drive Motor Replacement Kit:
50 Hz: 6401-003-08-41
60 Hz/1 Ph: 6401-003-08-42
60 Hz/3 Ph: 6401-003-08-40
600 V/60 Hz/3 Ph: 6401-003-08-43
AJ-64/86/100 Machines:
Gear Reducer: 6105-011-87-20
Drive Motor Replacement Kit:
50 Hz: 6401-003-08-41
60 hz/1 Ph: 6401-003-08-42
60 Hz/3 Ph: 6401-003-08-40
600 V/60 Hz/3 Ph: 6401-003-08-43
CONTACT INFORMATION
Jackson MSC Inc. provides technical support for all of the
dishmachines detailed in this manual. We strongly recommend that
you refer to this manual before making a call to our technical sup-
port staff. Please have this manual with you when you call so that
our staff can refer you, if necessary, to the proper page. Technical
support is available from 8:00 a.m. to 5:00 p.m. (EST), Monday
through Friday. Technical support is not available on holidays.
Contact technical support toll free at 1-888-800-5672. Please
remember that technical support is available for service personnel
only.
Rack Conveyor Drive Motor and Gear Reducer Replacement Instructions
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Drive Assembly (with Adjust-A-Peak)
Mounting Plate
Gear Reducer
Drive Hub Bearing & Bolt
Drive Motor
Rack Conveyor Drive Motor and Gear Reducer Replacement Instructions
Revision A (07/05/2005)
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