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  How to Replace the Pad Bearing on a Porter Cable Sander

Why Read This Article?

Finish Nailer Repair - Replacing the Driver Guide (Ridgid Part # 79004001022)

Article Breakdown

Finish Nailer Repair - Replacing the Driver Guide (Ridgid Part # 79004001022)

Video

Tools & Materials

Fix Factor: Easy Duration: About 25 minutes Frequency: As necessary Tools Required: Phillip's screwdriver, Torx drivers, large flat-blade screwdriver, hex wrenches, snap-ring pliers, bench vise, hammer, socket set, small screwdriver Part #: 865119SV

How to Replace the Pad Bearing on a Porter Cable Sander

Finish Nailer Repair - Replacing the Driver Guide (Ridgid Part # 79004001022)
Replacing the pad bearing on a porter cable sander The Facts

Pad bearing wearing out? It's time to face the fix. Whether you are a master carpenter or a seasonal sander, eReplacementParts.com provides the parts, procedures and facts you need to fearlessly fix what fails you.

The pad bearing allows the pad support (and the sanding pad) to rotate freely. Under normal circumstances, you should be able to rotate the sanding pad without spinning the motor. When the pad bearing begins to fail, you will notice increased resistance when trying to rotate the pad by hand. You'll also notice that the motor spins along with the pad. Repairing the bearing is easy to do.

This article provides step-by-step instructions for removing and installing the pad bearing on a Porter Cable Quicksand 333 series sander.

Let's get started.

The Fix REMOVING THE PAD BEARING [top] 1. Remove the sanding pad.

Remove the (3) screws from the sander pad.

Remove the screws

 

 

Remove the sanding pad from the sander.

Remove the sander pad

 

 

  2. Remove the clutch belt.

Remove the clutch belt from the fixed pulley and the pad support pulley.

Remove the belt

 

 

  3. Remove the pad housing.

Remove the (2) screws from the pad housing.

Remove the two screws

 

 

Separate the two halves of the pad housing.

Separate the two housing halves

 

 

Separate the sander from the pad housing.

Separate the sander from the housings

 

 

  4. Remove the housing O-ring.

Use a screwdriver to pry the O-ring out of the groove in the housing.

Pry the o-ring

 

 

Work around the edges of the O-ring; stretching it around the pad support assembly as you move.

Remove the O-ring

 

 

Remove the O-ring from the sander.

Remove the O-ring

 

 

  5. Remove the pad support.

Grasp the fan to prevent the pad support from rotating.

Hold the fan

 

 

Remove the (1) screw from the pad support.

Remove the screw

 

 

Remove the pad support (and washer) from the sander.

Remove the pad support

 

 

  6. Remove the pad bearing.

Use retaining-ring pliers to remove the retaining ring. Remove the retaining ring

 

 

Place the pad support in a bench vise (tapered side facing the table). The jaws of the vise should be tightened to sufficiently hold the pad support without obstructing the bearing (from below).

Place the pad support in the vise

 

 

Locate a socket that is approximately the same diameter as the pad bearing.

Locate a socket of similar size

 

 

Position the socket squarely against the pad bearing (from the top).

Position the socket on the bearing

 

 

Use a hammer to repeatedly tap the socket until the pad bearing breaks free from the pad support assembly.

Tap the socket

 

 

Remove the pad bearing from the pad support. (Keep the old bearing for use in the following step.)

Remove the bearing

 

 

 

  INSTALLING THE NEW PAD BEARING [top] 7. Install the pad bearing.

Place the pad support assembly on the anvil-portion of the vise (with the tapered side facing up).

Place on anvil

 

 

Place the new pad bearing in its approximate position within the pad support.

Install the bearing

 

 

Place the old pad bearing on top of the new pad bearing. (This protects the new pad bearing from damage as it is tapped into place).

Use old bearing to tap with hammer

 

 

Position the socket squarely on top of the old pad bearing.

Position the socket

 

 

Use a hammer to repeatedly tap the socket until the new pad bearing is fully seated within the pad support assembly.

Tap the socket

 

 

Use retaining-ring pliers to install the retaining ring and secure the new pad bearing. Replace the retaining ring

 

 

 

  REASSEMBLING THE UNIT [top] 8. Reinstall the pad support.

Install the pad support onto the sander.

Install the pad support

 

 

Install the washer onto the pad support. (The side with the recess should be facing away from the bearing).

Install the washer

 

 

Secure the pad support with the (1) screw.

Secure the pad support

 

 

  9. Reinstall the housing O-ring.

Install the housing O-ring into the groove on the motor housing.

Install the housing O-ring

 

 

  10. Reinstall the pad housing.

Install one half of the pad housing onto the sander (the seam should align with the seam on the motor housing).

Install the pad housing

 

 

Install the second half of the pad housing onto the sander.

Install the second pad housing

 

 

Secure the pad housing with the (2) screws.

Secure the sides

 

 

  11. Reinstall the clutch belt.

Install the clutch belt onto the fixed (small) pulley.

Install the clutch belt

 

 

Stretch the clutch belt onto one side of the pad support.

Stretch the belt into position

 

 

Rotate the pad support to seat the clutch belt.

Rotate the pad

 

 

  12. Reinstall the sanding pad.

For easy alignment: Pass a small screwdriver through one of the screw holes on the sander pad; then insert the end of the screwdriver into one of the holes on the pad support.

The easy way

 

 

Install the sanding pad.

Install the sanding pad

 

 

Secure the sander pad with the (3) screws.

Secure the pad

  The Finish

Sanding can be a demanding task. But you don't have to rough-up your accountant to smooth-out your countertops. As you just learned, repairing your own power tools is simple when you follow our step-by-step guides. Not only did you expand sander functionality at a fraction of the cost of replacement; you have taken the edge off all future repairs.

Find your next fix here.   [top]

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