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Discussion summary
YOUR RESEARCHHow to refurbish window motors
Leading reported evidence
Use electric contact cleaner
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
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Read evidence and context
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Performed · outcome unconfirmed · Original poster
Clean it all, I used electric contact cleaner, it will be full of black brush debris
Leading evidence: 'Use electric contact cleaner' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check seal is in place' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion · Original poster
Slide on the main spline plastic gear, double check the seal is in place
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Suggestion · Original poster
Make sure the inside of the steel casing is clean (should be from step 10)
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Suggestion · Original poster
Clean the plastic housing where the motor goes into, using contact cleaner, its full of black brush material
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
2 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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As requested breaking this out to its own thread from elsewhere:
Don't have any photos as my hands were all greasy, but I figured how to refurbish power window motor assemblies as mine died and I decided to risk a used ebay motor (that I could refurb it, I'll attach a stock photo). Here's a basic outline:
With the motor assembly off, remove the 5? torx screws for the metal/rubber seal cover that seals around the output shaft
Remove the C clip on top of the shaft, don't lost it!
Slide the plastic splined drive gear off, note it has a bottom seal, don't lose it
Remove the rubber cush drive, examine it for damage and the 3 vanes that drive it, if they are damaged the unit is kaput
If ok, remove the inner plastic drive gear, note it has a thin metal washer at the bottom don't lose it
On the side of the housing is the main connector, it is in a different plastic housing held on by 4 torx screws, remove them then pull the housing free, it has resistance
Unscrew the 4 torx screws that hold the steel motor casing on
Pull the motor out
Pull the rotor out of the motor casing with the plastic
Clean it all, I used electric contact cleaner, it will be full of black brush debris
Slide the brush housing slightly off the copper rotor, note it doesn't come completely off
Use toothpicks or other thin tools and dig out the impacted graphite brush material that shorts the motor over time (and kills it) between the copper
With all the debris removed between the copper contacts, give it another wash in contact cleaner
Use a toothpick to spring back the brushes, allowing the housing to fit back where it was
Make sure the inside of the steel casing is clean (should be from step 10)
Drop 1 drop of oil on the bronze bushing at the base of the steel casing to lubricate it
Clean the plastic housing where the motor goes into, using contact cleaner, its full of black brush material
Put a drop of oil on the bronze bushing in the plastic housing, where the motor shaft goes through
Insert the motor back into the plastic housing
Tighten the 4 torx screws to fit it
Insert the connector plastic part, it should be aligned via the PCB and casing
Tighten the 4 torx screws to mount it in place
Grease the bottom of the main drive shaft
Grease the outside of the gear
Insert the gear, don't forget to check the washer
Insert the cush drive
Grease the steel shaft
Slide on the main spline plastic gear, double check the seal is in place
Add grease to the stop of the shaft
Snap on the C clip
Put the seal/steel side part on, make sure to grease the inside of the seal first
Put the torx screws back
Wipe the outside
Go drink a beer, you saved $600-1000 vs buying a new window motor
even if you have the door open to fix something else and your motor is 20 years old its still going to probably fail. This can all be done in 20 mins so worth doing
