Part Location Diagram of JT9-994534 Jet ON-OFF SWITCH
See part B-8 in the diagram

ON-OFF SWITCH JT9-994534

Manufactured by:
Jet
ERP Number:
ERP19139672
Part Number:
JT9-994534
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!

Easy 

15 - 30 mins 

(24 rated repairs) ?

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Troubleshooting

This part works with the following brands:
  • Jet
  • Powermatic
This part works with the following products:
  • Lathe
Part# JT9-994534 replaces these:
994534,

Customer Part Reviews

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4.6
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Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

Easy 

15 - 30 mins 

(24 rated repairs) ?
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Replaced damaged parts of the sander.

Rodney from JEFFERSONVILLE, Indiana

3 of 3 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Nutdriver, Pliers, Screw drivers, Socket set, Wrench set
I removed all the damaged parts and replaced them with the newly purchased parts. I used the schematic drawings which made the repair much easier. The machine had to be readjusted so the sander operated properly. All the parts I ordered were shipped together and were packaged to prevent damage during shipment. The parts were exactly w hat I needed to repair the machine.
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Switch shorted out

DAVID from SLATINGTON, Pennsylvania

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers, Socket set
Parts Used:
JT9-994534, JT9-72-2120
Opened up control box . Disconnected it from driveshaft and relocated box on workbenches. Removed damaged parts and burned wires replaced with new and reinstalled.
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Broken on/off switch

Timothy from HAZEL GREEN, Wisconsin

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers, Wrench set
Parts Used:
JT9-994534
Jet 1632 Drum Sander

Removed the cover of the switch box
Removed set screw to conveyor drive
Removed the box from the machine
Made sure to rewire correctly by finding a diagram on YouTube
Plugged in to make sure wired correctly before reinstalling the box on the machine
Put cover on box
In stalled box back on machine
Put set screw back in the conveyor drive shaft
All worked great!
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Power Switch was destroyed when a student snagged her back on the switch on her way out the door.

Christopher from Del Norte, Colorado

0 of 1 people found this instruction helpful.
Difficulty Level:
Difficult
Total Repair Time:
15 - 30 mins
Tools:
Pliers, Screw drivers, Socket set
Parts Used:
JT9-994534
Executive summary: Disconnect the power cord. Remove the cover plate on the bottom of the control housing by removing four phillips head machine screws. Let the circuit board drop. Depress the spring tabs on the ends of the old switch and push it out through the upper face of the control panel. Disconnect the spade connectors from the old switch and connect the wires to the new one; one at a time so you don\'t screw up the pin order. Push the new switch into the control panel. Push the control board back itn the control housing, resecure the cover plates.

Epic Version:
This was a technically simple but physically awkward repair to a part that should not normally need replacement.The poor kid who broke the switch was tearfully honest and apologetic and if she hadn\'t told me what happened I would never have discovered who was responsible, so, yeah, there are still great kids out there.

First, disconnect the power before working on any machine.

To replace the broken switch it is necessary to remove the cover plate on the bottom of the control housing. Unfortunately, the legs and mounting surface of the stamped sheetmetal stand on the model JWDS 1632 drum sander are angled for stability. Without removing the stand I could not get a straight shot at two of the screws that secured the cover plate. So I angled the screwdriver. The screws came out easily enough, but I chowdered the heads in the process.

Once the cover plate is off, the circuit board can be pulled out of the way so you can reach up underneath the control panel with your favorite spudger to release the spring tabs that secure the switch. I have a couple of old butter knives ground and bent into various shapes for this purpose.

I found that the best approach was to wiggle the switch housing back and forth, pushing alternately on each end of the housing as I released the spring tabs a bit at a time on each end. Eventually the switch comes free and you can pull it up out of the housing. Allow the circuit board to come up with it and there is just enough slack in the wires to remove them from the old switch and replace them on the new one, one at a time.

Push the new switch back into the face of the control panel. It will sort of click-click-click, and then snap into place. Push the circuit board back into the housing and then reinstall the coverplate, securing it with the screws. Take care to NOT cross thread the screws, which I did because of the way the stand interfered with the shaft of the screwdriver and because I was working over my head while crawling around under the machine, and because I was too lazy to just take the machine off of it\'s stand in the first place.

Test the machine to make sure the new switch works. Then, sulk for a few days because you cross threaded the screws and chowdered their heads up and made a carefully maintained machine look like it was chewed on by a dull beaver. Go to the local hardware store and pick up four (M6 I think, but you better check) socket head screws and washers. Remove the chowdered up old screws, chase the threads with a tap, and replace them with the socket heads because you can remove and install them with a BALL DRIVER next time. Hopefully there will not be a next time.
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Locking tab broken off

David from Hardeeville, South Carolina

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
JT9-994534
Disconnect
Remove access cover
Disconnect belt drive motor using Alan key
Remove motor switch assembly
Disconnect switch and remove
Install new switch
Reverse process to reassemble

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Table saw off/on switch contacts were welded closed.

DeLane from WESTMINSTER, Colorado

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers
Parts Used:
JT9-994534
I removed one side panel which allowed me to access the switch case. Once all the wires were disconnected, I was able to pop the switch out of the frame. The new switch popped right back in. Reconnected the wires and back in business. To replace the switch, it took about 15 minutes. The rest of the time was spent cleaning the inside of the table saw.
Side note: The original switch contacts were welded closed, not allowing the saw to stop. I was able to redress the contacts and put the switch back together. I swapped out the new for the old and have been using it ever since. The new switch is saved as a spare.
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one side of the old switch died

donald from north tonawanda, NY

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
JT9-994534
took switch off of the lathe and tested it. One side was dead
order switch and put it on the lathe.
Because I took the old switch off it only took a few minutes to put the new one on.
Used a drill gun to make it easier.
total time 15 minutes
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1995 central machine on/off switch broke.

Thomas from Grand Blanc, Michigan

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Pliers, Screw drivers
Parts Used:
JT9-994534
Lots of work, old switch not available! Used a Jet replacement, four leads, hole in switch plate had to make larger
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Swich failed

Ralph from BEAVERTON, Oregon

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
JT9-994534
It took two screws, and then just on & off with 4 wire clips then put the new switch back in. I did have to move a collar from the old switch to the new one. This was the most difficult part of the job.

Exactly correct part-- very easy!
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Plastic On/Off switch was broken and had to be replaced

David from Phoenix, Arizona

0 of 1 people found this instruction helpful.
Difficulty Level:
Difficult
Total Repair Time:
1- 2 hours
Tools:
Nutdriver, Pliers, Screw drivers, Wrench set
Parts Used:
JT9-994534
I had to disassemble the housing for the switch. That included decoupling the motor
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