This item has been sourced from the original manufacturer and is intended to be used with Bostitch air compressors. The pressure switch is a vital component of the compressor that signals the motor to turn on or off based on the pressure in the tank. A faulty switch can either not turn on the motor and not allow enough pressure to build, or not turn the motor off and potentially overload the motor. This item is available as an individual replacement part.
Troubleshooting
This part works with the following brands:
Bostitch
This part works with the following products:
Compressor
Part# AB-9063227 replaces these:
AB-9063227,
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Customer Part Reviews
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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(7 Reviews)
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★★★★★
★★★★★
Resolved the issue with reasonable cost
My BOSTITCH CAP1512 air compressor would not shutoff, causing the pressure relief valve to open when the tank hit 155 psi. The valve would stay open until the tank pressure lowered to 70 psi and then would close, where the cycle would start over. The old pressure switch had a lot of rust in the air opening, which I'm sure is a result of me not emptying the condensate each time I used the compressor. The replacement of the pressure switch consisted of removing the 8 or so screws holding the black plastic cover on the front and back together and removing one push to connect/quick release tube, allowing access to the switch. Once reachable the switch replacement is very straight forward, with no issues in re-assembly. It took me 30 minutes to replace the switch start to finish. The compressor is now shutting down at the correct tank pressure. Ordering from eReplacementParts was easy and the part was shipped and delivered in 7 days, with a total cost that is 15% of a new compressor.
William - June 18, 2019
Verified Purchase
★★★★★
★★★★★
Pressure switch replacement
The part was exactly what I needed. Came quick,perfect condition.
Guest - November 15, 2019
Verified Purchase
★★★★★
★★★★★
Back up and running
The part was exactly what the repairman needed and my favorite compressor is back on the job.
Guest - January 27, 2020
Verified Purchase
★★★★★
★★★★★
The first & only place you need to look
Easy to find OEM parts and even how to install them. I've compared prices and haven't found any better deals. Very fast shipping.
D K - April 14, 2020
Verified Purchase
★★★★★
★★★★★
Pressure switch
Just what I need.
Guest - November 24, 2020
Verified Purchase
★★★★★
★★★★★
So far working fine
A little challenge to get at, but easy fix on my compressor. Saved me from buying a new unit as I am a Carpenter and use that unit a lot.
Guest - December 28, 2020
Verified Purchase
★★★★★
★★★★★
Pressure swirch
This was exact replace and work like new.
Guest - March 19, 2021
Verified Purchase
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The worst part was removing the old switch. Both covers and 2 of the rubber feet had to be removed to get at the old switch. Then there was no room to get a wrench on the switch, so I had to use a vice grip pliers to clamp unto the switch, Reinstalling the new switch was very easy and then putting everything back together.
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Unit would overpressure and cause relief valve to blow.
1. Since relief valve pressure should be higher than compressor shutoff switch, when relief valve popped at it\'s correct pressure and compressor was still running, I realized the compressor shutoff switch was sticking.
2. I removed miscellaneous screws to take off plastic covers and also removed two of the rubber feet which we
... Read morere in the way of cover removal.
3. I pulled off the two wire connectors on the pressure switch and used a deep socket to remove the switch.
4. I installed a new switch using Teflon tape to seal the threads and reinstalled the miscellaneous wires etc in reverse order. Tested compressor and all is well.
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Compressor would not shut down after reaching maximum pressure
Gaining access to the pressure sending switch was fairly easy, You will need an extra long phillips screwdriver to be able to reach the screws holding the covers together on the Bostitch Trim Air compressor. 2 of the screws were hidden behind a decal. The original pressure switch is epoxy or thread locked in, so I took a heat gun to it i
... Read moren order to soften up the glue. After that it came out easily. A little dab of blue thread lock on the new part, reconnect the 2 sending wires to the pressure switch reassemble the covers and test.
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Before approaching maximum pressure safety switch would blow.
I had to remove all the plastic covers to get to the pressure switch. Once the covers were removed it was pretty easy to replace the pressure switch. The space around the switch is a little tight so it took a while to unscrew the old switch 1/4 turn at a time. To install the new switch all I did was use a little blue Loctite on the thr
... Read moreeads of the new switch. Originally I thought the problem was the safety switch. Every time I started the compressor as it approached 150 psi, the safety switch blew. First I replaced the safety switch which did not fix the problem. Bostitch technical support told me to replace the pressure switch which did fix the problem.
I removed the screws of the cover of the compressor.
After that I change my compressor switch , taking the old off and removing the wires . And putted back the wires and the cover . That is it .
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Electro portion of the electro-pnumatic switch failed
Remove 4 rubber feet remove 5 screws that hold plastic case together and 4 screws that hold case to metal legs. Separate case and expose switch remove two wires then unscrew switch. I drilled the new switch out about 1/8\" deep and siliconed in a brass tube 3\" long to help moisture from setting in switch after use I turn the compressor
... Read more upside down. Screw switch in and reassemable.
Unplug, bleed off air in tank by opening valve on the end of the tank, slowly. Turn upside down, Remove plastic cover, 8 Philip head screws. To gain access to pressure switch. Removed spade connectors at the switch. Used correct size wrench to remove pressure switch. Replaced with new one, after putting small amount of pipe compound on th
... Read morereads, reinstalled spade connections, put the case back together. Closed drain valve, Plugged in and turned compressor on.. Shut off as new. At correct pressure.
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The compressor would build pressure and then the safety valve would release and and the pressure would drop immediately and the compressor would start over again.
Removed housing.
Marked which lead went to which prong on the old and new valves.
Had to use solvent and allow to penetrate over night before trying again to remove original.
Vacuumed the opening to remove any residual rust particles.
Used Teflon tape on the new threads.
I was impressed with the quality of
... Read morethe Bostich
Compressor.
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Air compressor would not shut off after reaching target tank pressure.
1. Removed 10 screws holding front and back plastic shroud together.
8 of the 10 are obvious, 2 are hidden under a decal on the plastic handle
you wrap the power cord around.
2. Separate the from and back plastic shrouds to get access to the pressure switch.
3. For more access to the switch I
... Read more released the plastic air hose from the tank to the
manifold by pressing down on the quick release coupler near the tank This allowed
more room to work.
4. I used channel locks to un-screw the switch from the tank.
5. Applied thread sealant tape to the threads of the switch.
6. Screwed switch into tank until tight.
7. Push plastic air tube from manifold firmly back into quick release coupler near
the tank.
8. Put front & back plastic shrouds together and positioned that assembly in place.
9. Screwed shroud assembly to the metal frame.
10. Ran compressor and verified it shut off automatically after tank reached 155 PSI.
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Model Cross Reference
This part works with the following models:
ERP Number: ERP18990946
Manufacturer Part Number: AB-9063227
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
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_WW_1.gif "Part Location Diagram of AB-9063227 DeWALT PRESSURE SWITCH")
