When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
the center hub has some spider cracks that don't look too good. photo makes them look a lot bigger and worse than they are:
not interested in taking a deep financial dive on a wiper motor (ughhh) would it be OK to reinforce with some type of epoxy, or could that be a disaster if something flakes off? pretty sure this gear does not come off easy, and in this condition, might break apart. suggestions?
Epoxy, I don't believe is a good short solution - used one from Mark Anderson is a better one - especially if you crack it open and verify its condition.
Epoxy, I don't believe is a good short solution - used one from Mark Anderson is a better one - especially if you crack it open and verify its condition.
kevin, completely agree. rainy season is here, and I need to put this back in ASAP, so for the short term should I smear some epoxy over the cracks, or just throw it back in, as is. what would be a good epoxy for this repair? and, I was thinking of using a high temp silicone/ceramic brake grease for packing the gear. (have some on the shelf) or is there a better grease for this application?
Unless you were able to clean all the grease out of the cracks, I doubt that an epoxy would do anything useful on that gear.
If you wanted to fix it permenently, you could probably cast a mold from it and make a new one from a two part resin, but that's a lot of work to do for a one off when others seem to be available still.
kevin, completely agree. rainy season is here, and I need to put this back in ASAP, so for the short term should I smear some epoxy over the cracks, or just throw it back in, as is. what would be a good epoxy for this repair? and, I was thinking of using a high temp silicone/ceramic brake grease for packing the gear. (have some on the shelf) or is there a better grease for this application?
Do you really want to r and r the wiper motor again? It will always have you wondering if this is the last time the wipers will work....
As I remember the cowl had to come out, right? I replaced a wiper motor in my first 86.5 and it was not fun. Others are more knowledgeable about the proper grease. I would use high temp wheel bearing grease, but what do I know?
Do you really want to r and r the wiper motor again?
As I remember the cowl had to come out, right?
actually, the motor came out in less than 15 minutes with no cowl removal. once the intensive washer tank is moved out of the way, everything is accessible and pretty simple.
I would use high temp wheel bearing grease, but what do I know?
Is wheel bearing grease conductive?
With having the contacts for the wiper timing in that gear box, a conductive grease would not be out friend. Hopefully just causing it to cycle erratically, but it could cause blown fuses.
With having the contacts for the wiper timing in that gear box, a conductive grease would not be our friend. Hopefully just causing it to cycle erratically, but it could cause blown fuses.
SIince my motor and regulator overhaul my wiper stutter has returned. I am able to mitigate the stutter by keeping the windshield smooth. I found using rainX eliminates the issue for a couple weeks of rain.
Someone suggested I polish my windshield, I talked with @Spider008 about a couple of Girotts Garage products. they offer a fine and extra fine compound. I haven't tried it yet, however, I found that using a Clay-bar on the windshield did a good job about removing all the debris and making the windshield smooth the eliminate the stutter for a full season.
Hopefully this was useful
Also, FYI the wiper motor from the 944 is the same for the S4/GT/GTS
SIince my motor and regulator overhaul my wiper stutter has returned. I am able to mitigate the stutter by keeping the windshield smooth. I found using rainX eliminates the issue for a couple weeks of rain.
Someone suggested I polish my windshield, I talked with @Spider008 about a couple of Girotts Garage products. they offer a fine and extra fine compound. I haven't tried it yet, however, I found that using a Clay-bar on the windshield did a good job about removing all the debris and making the windshield smooth the eliminate the stutter for a full season.
Hopefully this was useful
Also, FYI the wiper motor from the 944 is the same for the S4/GT/GTS
mike, sorry to hear that your motor refurb did not fully solve the issue; your write up was very helpful to me, but I think my issue might be wiper related. rather than post in this thread, I am going to resurrect a wiper thread.
Posting to help someone who sent me a direct message about motor noise. When I reassembled everything back in the car, I noticed I had loud groaning sounds from the system After much sleuthing, I determined the noise was result of too much pressure on the worm drive shaft was pushing the motor shaft into the bottom of the housing. I found that I had to adjust the set screw at the top of the worm drive. See photo below. I did this with the motor plugged in and running. I guess reassembly of the motor requires some additional adjustments. HTH.
more great info; thanks mike. to be clear, I did not take my motor apart, only the cover to expose the worm and gear. I am not hearing motor noise, but what sounds like clicking noise from the gear. I will check on that tension screw, but perhaps I should use a thicker grease? is the transmission section, (the worm and gear) of the assembly prone to noise? its not horrible, and with AC and radio on, rain coming down and engine noise, maybe its not so bad......
more great info; thanks mike. to be clear, I did not take my motor apart, only the cover to expose the worm and gear. I am not hearing motor noise, but what sounds like clicking noise from the gear. I will check on that tension screw, but perhaps I should use a thicker grease? is the transmission section, (the worm and gear) of the assembly prone to noise? its not horrible, and with AC and radio on, rain coming down and engine noise, maybe its not so bad......
Paul,
I reckon that gear is not going to last much longer or so I suspect.and there will be a reason why those cracks are showing There is quite a fair amount of torque going through the output shaft and this begs the question as to whether the stutter you reported a few posts ago is the gear jumping around the output shaft- a precursor to total failure perhaps? Had something similar on my Jaguar.
For grease where there is an electrical contact one needs to use a dielectric grease- usually silicon based.
06-08-2019, 11:13 AM
