Medium
1-2 hours
This is a genuine OEM sourced replacement part designed for use with air compressors. It is used to secure the crankcase cover to the unit. This part is made out of metal and it is sold individually. Requires a wrench to tighten/loosen this screw.
Screw AC-0798
OEM part for: Porter Cable
Part Number: AC-0798
$3.99
In Stock
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Compatibility
This Screw will fit the following 74 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
Porter Cable
Show More Compatible ModelsThis item works with the following types of products:
- Compressor Parts
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Part was the part I ordered,parts numbered and easy to view,no mix ups..
Used the parts right away,fit very well got my air compressor fixed,wish had found the site sooner,now am looking at all my older equipment that I have that are wearing out,going to see if they have parts for those.
Guest -
November 17, 2022
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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.
Head Bolts Broken off
Earl - June 6, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Compressor
Difficulty
Hard
Time
1-2 hours
Tools Used
Screwdriver, Pliers, Power Drill, Socket set, Drill Bits
Two head bolts were broken off so I had to drill them out and clean up all of the threads in order to put the unit back together, this was the hard part. Once that was done all I had to do was reassemble the unit back together and clean up some wire problems. Then after that did a test run and also found the pressure switch was turned up to full so that the compressor would not shut off yet at 200 lbs, so I turned that down so that the unit would turn off at 160 lbs and on at 120 lbs, then set the regulator to deliver air to the tools at 100 lbs. unit now runs great.
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Compressor head bolt failure
Matt - February 8, 2023
Tool Type
Compressor
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Power Drill, Socket set, Adjustable Wrench, Tap and Die
Parts Used
Disassemble
Drill broken bolts.
Tap aluminum casting to restore threads.
Replace o-rings.
Reassemble.
Test.
Drill broken bolts.
Tap aluminum casting to restore threads.
Replace o-rings.
Reassemble.
Test.
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Head bolt for compressor broke.
James - September 12, 2022
Tool Type
Compressor
Difficulty
Easy
Time
More than 2 hours
Tools Used
Power Drill, Socket set, Nutdriver, Adjustable Wrench
1. Removed head
2. Drill out broke head bolt
3. Replaced valve body with new one and new gaskets
4. Reassembled compressor head using new head bolt
2. Drill out broke head bolt
3. Replaced valve body with new one and new gaskets
4. Reassembled compressor head using new head bolt
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Gasket pinched wouldn’t get up to proper pressure
Robert - May 2, 2020
Tool Type
Compressor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Pliers, Power Drill, Socket set, Wrench Set, Nutdriver, None
Parts Used
Removed main cover
Removed casing torque screws
Removed 4 bolts holding compressor body- had to easy out broken bolt
Replaced both gaskets
Put back together and tested pressure
Works like new-$15 with postage saved me buying a new $400 compressor
Removed casing torque screws
Removed 4 bolts holding compressor body- had to easy out broken bolt
Replaced both gaskets
Put back together and tested pressure
Works like new-$15 with postage saved me buying a new $400 compressor
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Dewalt 200 PSI compressor would not build up pressure. After removing cover noted one of the four head bolts was broken and the o-ring was protruding a bit.
Glenn - October 1, 2017
Tool Type
Compressor
Difficulty
Easy
Time
30-60 minutes
Tools Used
Power Drill, Socket set, Torx drivers for cover, cobalt drill bits
Parts Used
1. Removed plastic cover with torx driver bits.
2. Removed head cover by removing the 3 remaining bolts.
3. Drilled out broken bolt.
4. Replaced the two internal o-rings on either side of head cover.
5. Installed head cover using 4 bolts (used loctite to keep bolts from backing out during operation).
6. Re-installed cover.
7. Restarted compressor. No problems.
2. Removed head cover by removing the 3 remaining bolts.
3. Drilled out broken bolt.
4. Replaced the two internal o-rings on either side of head cover.
5. Installed head cover using 4 bolts (used loctite to keep bolts from backing out during operation).
6. Re-installed cover.
7. Restarted compressor. No problems.
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Blown gasket broken bolt
john - July 27, 2017
Tool Type
Compressor
Difficulty
Easy
Time
15-30 minutes
Tools Used
Socket set, Torx bit
Parts Used
Removed the shroud
Removed the broken bolt from the cylinder head
Removed the cylinder head and the valve plate assembly
Removed the old o-ring and installed the new o-ring
Replaced the valve plate assembly
Replaced the cylinder head
Replaced the shroud
Removed the broken bolt from the cylinder head
Removed the cylinder head and the valve plate assembly
Removed the old o-ring and installed the new o-ring
Replaced the valve plate assembly
Replaced the cylinder head
Replaced the shroud
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OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
