wipers motor grinding noise
01-09-2003, 09:20 AM
#1
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wipers motor grinding noise
Hello,
recently my 968 front wiper motor started do produce some noise, like a "coffe grinder". Everything works, but the noise does not reassures about "long term reliability" of the wiping function
Questions are:
1) Is it possible to /open/grease/repair the wiper motor ?
2) Are available somewhere instructions on how DIY, and also procedures to dismount the wiper assembly ?
3) If everything goes wrong, were to buy remanufactured or used motors ?
Thanks
Ugo
<img border="0" alt="[byebye]" title="" src="graemlins/wave.gif" />
recently my 968 front wiper motor started do produce some noise, like a "coffe grinder". Everything works, but the noise does not reassures about "long term reliability" of the wiping function
Questions are:
1) Is it possible to /open/grease/repair the wiper motor ?
2) Are available somewhere instructions on how DIY, and also procedures to dismount the wiper assembly ?
3) If everything goes wrong, were to buy remanufactured or used motors ?
Thanks
Ugo
<img border="0" alt="[byebye]" title="" src="graemlins/wave.gif" />
01-11-2003, 08:11 AM
#2
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these motors have fibre gears like the window motors, you can strip them down and re-lube them but it is probably better to get another one from a wrecker.
01-11-2003, 09:08 AM
#3
Don't know about the newer motors, but mine were
running very slow. pulled the wiper motor and
found that it was completely disasembleable.
Opened it up, cleaned the aramature and relubed
the berings, put it all back together and now works fine. Figured no great loss if it wasn't
repairable, would just need to get new one. Tricky
part putting the motor back together is getting
the brushes in but not impossible, use string or
light guage wire to hold them back while installing the end plate then pull the wires out
before final closing of the motor.
Good Luck,
Bill
running very slow. pulled the wiper motor and
found that it was completely disasembleable.
Opened it up, cleaned the aramature and relubed
the berings, put it all back together and now works fine. Figured no great loss if it wasn't
repairable, would just need to get new one. Tricky
part putting the motor back together is getting
the brushes in but not impossible, use string or
light guage wire to hold them back while installing the end plate then pull the wires out
before final closing of the motor.
Good Luck,
Bill
01-12-2003, 06:07 PM
#6
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FOUND IT!
After disassembling and cleaning my wiper arm posts, my wiper motor still made a LOUD whining noise. The noise would start when the wipers were first turned on, last a little while, and then stop....and then start again a few minutes later: SOUND FAMILIAR?
Well, I finally found a easy fix to this problem; and it works!
1. Remove the rubber weather strip that lines the top of the firewall.
2. Lift the front of the large black plastic cover that covers the fan blower/wiper motor.
3. Remove the black plastic cover that fits around the wiper motor. You will see a wire cluster that leads to the top of the motor covered in epoxy. These wires run through an irregularly shaped metal plate (2"x4")that covers the top of the motor.
4. Carefully remove the gold flathead screws that hold the plate to the motor. You will notice that all can be removed by using creative measures except for the top one that is wedged under the windshield. That is normal and will not be necessary to remove.
5. Now, carefully use a wide flathead screw driver and pry up the cover. Wedge the screwdriver under the cover just enough to get a applicator straw inside the opening.
6. Using a good, thick penatrating lubricant like PB Blaster (Autozone) spray a generous amount inside of the opening. This will lubricate the worm drive shaft that comes out of the motor, drive gear, and all associated bushings/bearings. No electronics will be affected, so don't worry!
7. Next, remove the screw driver (important) and run the wiper at high speed to allow the fluid to penatrate fully.
8. Reassemble
Note: Do not operate the motor with the screwdriver wedged under the cover, it will be in contact with the worm gear. Take this opportunity to clean the grounding contacts to the wiper motor.
Approx. Time: 20mins
Approx. Improvement to Car: 5HP
After disassembling and cleaning my wiper arm posts, my wiper motor still made a LOUD whining noise. The noise would start when the wipers were first turned on, last a little while, and then stop....and then start again a few minutes later: SOUND FAMILIAR?
Well, I finally found a easy fix to this problem; and it works!
1. Remove the rubber weather strip that lines the top of the firewall.
2. Lift the front of the large black plastic cover that covers the fan blower/wiper motor.
3. Remove the black plastic cover that fits around the wiper motor. You will see a wire cluster that leads to the top of the motor covered in epoxy. These wires run through an irregularly shaped metal plate (2"x4")that covers the top of the motor.
4. Carefully remove the gold flathead screws that hold the plate to the motor. You will notice that all can be removed by using creative measures except for the top one that is wedged under the windshield. That is normal and will not be necessary to remove.
5. Now, carefully use a wide flathead screw driver and pry up the cover. Wedge the screwdriver under the cover just enough to get a applicator straw inside the opening.
6. Using a good, thick penatrating lubricant like PB Blaster (Autozone) spray a generous amount inside of the opening. This will lubricate the worm drive shaft that comes out of the motor, drive gear, and all associated bushings/bearings. No electronics will be affected, so don't worry!
7. Next, remove the screw driver (important) and run the wiper at high speed to allow the fluid to penatrate fully.
8. Reassemble
Note: Do not operate the motor with the screwdriver wedged under the cover, it will be in contact with the worm gear. Take this opportunity to clean the grounding contacts to the wiper motor.
Approx. Time: 20mins
Approx. Improvement to Car: 5HP
01-13-2003, 08:56 AM
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David,
thank you for the detailed procedure.
I will try next weekend, but only if the room temperature is more comfortable than the current
-8 Celsius degrees I have currently in Italy ;-)
Bye
Ugo
thank you for the detailed procedure.
I will try next weekend, but only if the room temperature is more comfortable than the current
-8 Celsius degrees I have currently in Italy ;-)
Bye
Ugo
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01-13-2003, 10:56 AM
#8
Race Director
Just a warning:
If you are having trouble with your wiper motors, they can overheat!
Mine went last December on the way to work. The wipers stopped moving in the veritcal position. Around the corner from work, I started to smell that scary "electrical burning" smell. Fortunately, it was just the inside of the motor that was effected, but the motor itself was too hot to touch!
If anything, make sure that all leaves / debris are cleared away from the front cowl area. Had a few dry leaves been in my front cowl when my wiper motor went, I would have had a nice fire going!
-Zoltan.
If you are having trouble with your wiper motors, they can overheat!
Mine went last December on the way to work. The wipers stopped moving in the veritcal position. Around the corner from work, I started to smell that scary "electrical burning" smell. Fortunately, it was just the inside of the motor that was effected, but the motor itself was too hot to touch!
If anything, make sure that all leaves / debris are cleared away from the front cowl area. Had a few dry leaves been in my front cowl when my wiper motor went, I would have had a nice fire going!
-Zoltan.
