Genuine Bostitch replacement part, this item is sold individually. There are two of these gaskets used on the compressor models shown below. They are placed in between the AB-A640050 Valve Plate Assembly. The purpose of the gaskets is to create a seal so air will not leak out. Over time these will wear and have to be replaced. This would be a good time to inspect the Valve plate Assembly for wear also.
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★★★★★
★★★★★
Parts came quickly, and well protected. works like new.
Good to have my compressor back and running like it has for years.
Guest - September 23, 2019
Verified Purchase
★★★★★
★★★★★
Parts were fairly easy to replace. Would have liked some instructions included.
Bought 4 parts , quick delivery and repair wasn't too bad. The plate for the piston ring was a bit tricky . After we found there was a certain way to line up the cap for the ring things went more smoothly.
Guest - February 10, 2020
Verified Purchase
★★★★★
★★★★★
Worked as it was supposed to
Received it in a timely manner and it worked well.
Ronald - April 5, 2020
Verified Purchase
★★★★★
★★★★★
Compressor
Great prompt service good price,
Guest - September 14, 2020
Verified Purchase
★★★★★
★★★★★
Air compressor repair
Thanks for the advise on repairing my air compressor.It wasn't building pressure past 40 Lbs. The reeds had a small hole in them.....now it works perfect.......Thanks again for the advise.....
Guest - September 21, 2020
Verified Purchase
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1. Took off the handle, then the plastic cover.
2. Unscrewed the cylinder head - immediately saw the broken reed valve.
3. Replaced the reed valve and the gasket that seemed compromised when taking off the cylinder head.
4. Put it back together.
Removed head, cleaned off old gasket, replaced valve plate and lower and upper gaskets, retightened head bolts attached feeder tube. Turned on compressor allowed to get to full pressure, checked for leaks.
1. I removed the broken valve plate assembly.
2. I replaced with the new valve plate assembly.
3. Placed new cylinder head gasket on the new plate.
4. Then replaced all the components of the cylinder head.
5. Pulled the broken quick coupling and replaced with the Quick Coupling 1/4in M.
Make sure to pu
... Read moret thread sealant on the quick coupling. Good luck.
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Small metal reed valves had failed. Compressor would only pump to 65 PSI.
1. Removed the plastic cover and the handle covering the compressor.
2. Removed 2 screws and 2 bolts with the nuts that secure the cylinder head.
3. Removed the cylinder head to replace the damaged valve plate assembly.
4. Removed the intake reed valve from the top of the piston and replaced with the new part.
5.
... Read moreInstalled the new gasket between the valve plate and the head.
6. Reinstalled the bolts and the screws that hold the head and the torque.
7. Removed one screw on the piston rod and installed the new cooling fan.
8. Reassembled the cover and test ran. All worked fine.
Removed 4 bolts and cover to access motor.
Removed one air line and 4 bolts & nuts to inspect piston / valve plate.
Found valve plate damaged.
Ordered parts & replaced valve plate along with new gaskets on either side.
Reassembled all previously removed parts, operational & leak checks good.
Once parts
... Read more were in hand, actual time of repair was less than 30 minutes. Original troubleshooting and parts ordering process.
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During my basement remodel, my Bostitch air compressor quit building up pressure. It sat idile for 3 years. Bought another inexpensive compressor but ccouldn\\
Richard from Windsor, Colorado
1 personfound this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Screw drivers, Wrench (Adjustable), Wrench set
Simple repair. Removed the cover. Removed air tube from compressor head. Removed 4 head bolts. Removed the head, valve plate assembly and gaskets on both sides of the valve plate. Reassembled in reverse order. Ereplacementparts.com was fast in shipping the parts and was over half as expensive as other places. Second time I used them and w
... Read moreill continue to with next project.
Followed a tutorial I googled. Took off the cover, disconnected the supply line fitting, 4 hex screws on top of the cylinder, pulled off the old reed valve assembly, scraped off the old gaskets, put on the new gaskets and reed assembly, put everything back together.
1. Removed the cover.
2. Disconnected the air line.
3. Removed the cylinder head.
4. Replaced the valve plate and the head gasket.
5. Reassembled the compressor.
Removed the cylinder head
Replaced valve plate and gasket
Installed the cylinder head
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