Porter-Cable PCC710B Eccentric Shaft Replacement

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This guide is for a Porter-Cable 20V Oscillating Multi-Tool with the model number: PCC710B. This guide will help you replace a broken or malfunctioning eccentric shaft.

The eccentric shaft transmits power from the motor to the cutting blade. A worn or broken shaft will not be able to transmit power from the motor to the cutting blade.

Other power issues and possible fixes can be found here.

If your tool's power is working with no issues, but the oscillating tool is not moving back and fourth properly, it could also be due to a loose blade which you can fix by following these steps.

If all else fails, it's likely the eccentric shaft is not transmitting power correctly so you'll need to follow the steps below.

TIP: You will come across thick yellowish grease when dealing with these parts. The tool parts need this grease to function, so don't clean it from the tool! Bring a rag or napkin to wipe your hands after you finish handling these parts.

Before beginning this guide, make sure the battery of the tool is taken off, you do not want any power source connected to the device while working on this replacement!

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crwdns2931653:01crwdne2931653:0 Lever assembly

Porter-Cable PCC710B Eccentric Shaft Replacement, Lever assembly: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Place the tool on its side so the orange and white warning label barcodes are facing up.
The lever and battery base of the tool should point toward you.

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Porter-Cable PCC710B Eccentric Shaft Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement: crwdns2935265:02crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

Use a 5.5 mm nut driver to unscrew the Hex nut.
If the Hex nut is not unscrewing easily- you can use a 3 mm Hex head screwdriver to hold the other side of the screw still.

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Porter-Cable PCC710B Eccentric Shaft Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Flip the tool over and remove the black screw holding the tool together.
Get a good grip on the screw by using pliers to pull the screw out of the tool.

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Porter-Cable PCC710B Eccentric Shaft Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

Pinch the lever with your fingers and pull it up and away from the tool. The lever pops right off! You can squeeze on the lever, and it will come off just as easily.
When replacing your new lever assembly, make sure the black torsion (the black staple-like hinge) is oriented correctly.

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crwdns2931653:05crwdne2931653:0 Housing

Porter-Cable PCC710B Eccentric Shaft Replacement, Housing: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement, Housing: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement, Housing: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

Lay the tool on its side so that the grey and orange warning labels are facing up upwards.
Use the JIS #1 screwdriver to remove the 10 screws holding the tool together.

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Porter-Cable PCC710B Eccentric Shaft Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

Lift the case off to access the internals of the tool.

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crwdns2931653:07crwdne2931653:0 Spindle assembly

Porter-Cable PCC710B Eccentric Shaft Replacement, Spindle assembly: crwdns2935265:07crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement, Spindle assembly: crwdns2935265:07crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement, Spindle assembly: crwdns2935265:07crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

The outstretched arms of the spindle will be covered in grease - so grab a napkin to keep your hands clean!
Grasp the bottom of the spindle and pull it out towards you.
The spindle should come out easily. If not, lightly twist the object left and right while pulling it out.
You must grease the new spindle's arms before the install or else these parts will overheat and break. In addition, you'll have to maneuver the arms of the spindle around the head of the eccentric shaft. Finally, apply a light force to snap the spindle into place.

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crwdns2931653:08crwdne2931653:0 Eccentric shaft

Porter-Cable PCC710B Eccentric Shaft Replacement, Eccentric shaft: crwdns2935265:08crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement, Eccentric shaft: crwdns2935265:08crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

Porter-Cable PCC710B Eccentric Shaft Replacement, Eccentric shaft: crwdns2935265:08crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

Gently pull the motor out of the case.
To remove the eccentric shaft simply pull it off of the motor.
When replacing the eccentric shaft, you must grease it before the install or else it'll overheat and break. The black fan shaped part of the eccentric shaft should slide onto the thin rod of the motor until it clicks securely.