Easy
1-2 hours
It is a genuine OEM supplied replacement part is specially designed for use with Bostitch air compressors. The piston is a central component of a two-cycle engine. It both provides compression within the engine, as well as transfers the energy from combustion to the crankshaft which creates rotation. The most common reason for replacing the piston assembly is worn or damaged piston rings. It is made from high-quality metal and it is sold individually.
Conrod/piston AB-A810100
OEM part for: Bostitch
Part Number: AB-A810100
$10.13
In Stock
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Compatibility
This part will fit the following 1 machine
Bostitch
CAP2000P-OF Type 0 Air Compressor View Diagrams & Manuals
This item works with the following types of products:
- Compressor Parts
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Customer Repair Instructions ?
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Control rod and piston head disintegrated causing the drive belt to break. Second time this has happened since buying the compressor.
Charles - March 14, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Compressor
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Socket set, Adjustable Wrench
1. Removed the plastic housing surrounding the motor an compressor manifold.
2. Removed the broken Control Rod remains of the Conrod Cover (piston head) and inspected the piston well. Had some dents in there but it was still serviceable so I didn't replace it.
3. Assembled the conrod and conrod cover and seal then slid it into the piston housing. Had to use a small screw driver to bend the flexible seal attached it to just enough to allow it to slip in.
4. Reattached the conrod assembly to the motor wheel and tightened it all down.
5. Spent the rest of the hour attempting to get the new drive belt on. That is a PITA but it can be done, don't give up. You will need three hands to do it but a good screw driver in the right place helps keep the belt on the track long enough to get it all the way on. Make sure it is in the center of the wheels before you test it's operation.
6. Tested the repair and tank operations satisfactorily then reassembled the plastic housing to complete the job.
2. Removed the broken Control Rod remains of the Conrod Cover (piston head) and inspected the piston well. Had some dents in there but it was still serviceable so I didn't replace it.
3. Assembled the conrod and conrod cover and seal then slid it into the piston housing. Had to use a small screw driver to bend the flexible seal attached it to just enough to allow it to slip in.
4. Reattached the conrod assembly to the motor wheel and tightened it all down.
5. Spent the rest of the hour attempting to get the new drive belt on. That is a PITA but it can be done, don't give up. You will need three hands to do it but a good screw driver in the right place helps keep the belt on the track long enough to get it all the way on. Make sure it is in the center of the wheels before you test it's operation.
6. Tested the repair and tank operations satisfactorily then reassembled the plastic housing to complete the job.
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Torx screw failed, piston came apart destroying piston ring and ring cover, also scored cylinder.
Jimmie - April 7, 2016
👍 1 of 1 people found this instruction helpful
Tool Type
Compressor
Difficulty
Easy
Time
1-2 hours
Tools Used
Screwdriver, Socket set, Wrench Set
This is for a small, pancake air compressor used to drive a nail gun.
On disassembly, take photo or do drawing to show where parts go, especially reeds in the head..
Assemble new piston parts, use thread lock on torx screw.
Pass connecting rod up and through new cylinder barrel with connecting rod sticking out the end without the flange. Then hold on flat work surface with piston end down. Stiff piston ring is hard to bend so it will go into cylinder. I put some WD40 on the cylinder to make it easier. push down on cylinder while rocking piston a little until piston ring compresses and piston slides into cylinder. Ring should be concave toward cylinder head.
Assemble piston, connecting rod and cylinder into compressor through the cylinder frame, lightly tap connecting rod onto bearing. Don't let piston slide out of cylinder barrel.
Fix connecting rod to bearing with connecting rod clamping screw, thread lock would be good here too.
Install fan onto crankshaft with socket head screw.
Assemble cylinder head parts, taking care to keep reeds in proper place. Use your photo to make sure you get things right. Use new gaskets. Head parts and gaskets form several layers. While holding layered parts together, install on compressor with cylinder head bolts. Two inside nuts are captive in frame, outside nuts require 10mm box wrench to tighten. Install cylinder-to-tank tube and tighten. Run compressor briefly (keeping body, fingers, etc. away from the fan and connecting rod in case something comes loose) and see that pressure starts to build. If so, reassemble cover halves using the long bolts and screws. You will have to take the hose connection off to get one cover half on so release the pressure in the tank if any. Job done. Would have taken less time, but doubted whether reeds stayed in place and took head apart again. Also make sure you order all gaskets and parts you'll need up front. I didn't and it cost me more for shipping. ereplacementParts was fast on the orders and had the right parts. When a piston lets go, it is best to replace all the parts from connecting rod to piston cover and likely the cylinder too as it gets scored from the piston without ring banging around. Doesn't take much banging to do it.
On disassembly, take photo or do drawing to show where parts go, especially reeds in the head..
Assemble new piston parts, use thread lock on torx screw.
Pass connecting rod up and through new cylinder barrel with connecting rod sticking out the end without the flange. Then hold on flat work surface with piston end down. Stiff piston ring is hard to bend so it will go into cylinder. I put some WD40 on the cylinder to make it easier. push down on cylinder while rocking piston a little until piston ring compresses and piston slides into cylinder. Ring should be concave toward cylinder head.
Assemble piston, connecting rod and cylinder into compressor through the cylinder frame, lightly tap connecting rod onto bearing. Don't let piston slide out of cylinder barrel.
Fix connecting rod to bearing with connecting rod clamping screw, thread lock would be good here too.
Install fan onto crankshaft with socket head screw.
Assemble cylinder head parts, taking care to keep reeds in proper place. Use your photo to make sure you get things right. Use new gaskets. Head parts and gaskets form several layers. While holding layered parts together, install on compressor with cylinder head bolts. Two inside nuts are captive in frame, outside nuts require 10mm box wrench to tighten. Install cylinder-to-tank tube and tighten. Run compressor briefly (keeping body, fingers, etc. away from the fan and connecting rod in case something comes loose) and see that pressure starts to build. If so, reassemble cover halves using the long bolts and screws. You will have to take the hose connection off to get one cover half on so release the pressure in the tank if any. Job done. Would have taken less time, but doubted whether reeds stayed in place and took head apart again. Also make sure you order all gaskets and parts you'll need up front. I didn't and it cost me more for shipping. ereplacementParts was fast on the orders and had the right parts. When a piston lets go, it is best to replace all the parts from connecting rod to piston cover and likely the cylinder too as it gets scored from the piston without ring banging around. Doesn't take much banging to do it.
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Would only build 60 psi and not shut off
Carl - April 9, 2018
Tool Type
Compressor
Difficulty
Easy
Time
1-2 hours
Tools Used
Screwdriver, Nutdriver, Adjustable Wrench, Allen wrenches
Replaced the valve body head due to metal stuck in reed valves, then had to replace piston due to screw breakage while trying to replace rubber on piston. After assembly it now builds up to 150 psi and shuts off like it should. Not bad for a free compressor sitting next to a dumpster, and about 30.00 worth of parts. Need to watch out how the valve head gets replaced, if installed 180 it will blow air out the intake side of compressor
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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.
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