Porter Cable
Polisher

Model # 7403 Official Porter Cable disc sander/polisher & paint remover

Here are the diagrams and repair parts for Official Porter Cable 7403 disc sander/polisher & paint remover, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 65 parts  |

Jackshaft 874324
#31B

Disc polisher/sander paint remover diagram

Jackshaft

Part #874324

The manufacturer no longer makes this part, and there's no substitute part

Washer, Current Units 892767
#128

Disc polisher/sander paint remover diagram

Washer, current units

Part #892767

The manufacturer no longer makes this part, and there's no substitute part

Bolt, Current Units Incl. Ref. 128 892672
#121A

Disc polisher/sander paint remover diagram

Bolt, current units incl. ref. 128

Part #892672

The manufacturer no longer makes this part, and there's no substitute part

Bearing Retainer 875082
#110

Disc polisher/sander paint remover diagram

Bearing retainer

Part #875082

The manufacturer no longer makes this part, and there's no substitute part

Gear Housing 874229
#53

Disc polisher/sander paint remover diagram

Gear housing

Part #874229

The manufacturer no longer makes this part, and there's no substitute part

Lock 698708
#119

Disc polisher/sander paint remover diagram

Lock

Part #698708

The manufacturer no longer makes this part, and there's no substitute part

Hex Spacer 874955
#122

Disc polisher/sander paint remover diagram

Hex spacer

Part #874955

The manufacturer no longer makes this part, and there's no substitute part

Field, (7402, 7403) 875122
#2A

Disc polisher/sander paint remover diagram

Field, (7402, 7403)

Part #875122

The manufacturer no longer makes this part, and there's no substitute part

Gear Housing Cover 874253
#53A

Disc polisher/sander paint remover diagram

Gear housing cover

Part #874253

The manufacturer no longer makes this part, and there's no substitute part

Armature, (7402, 7403) 875124
#1A

Disc polisher/sander paint remover diagram

Armature, (7402, 7403)

Part #875124

The manufacturer no longer makes this part, and there's no substitute part

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

Main causes: faulty sensors, wiring failure, bad control console…

Main causes: bad control console, wiring failure, bad motor control board…

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

How to replace a treadmill motor controller

How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill drive motor

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…

Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking board

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

Repair difficulty
Time required
 30 minutes or less

Articles and videos for treadmills

Use the advice and tips in these articles and videos to get the most out of your treadmill.

How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

How to use a multimeter to test electrical parts video

How to use a multimeter to test electrical parts video

Learn how to use a multimeter to check for wiring problems in an appliance that's not working…