2011 rear wiper motor fail? - JeepForum.com

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post #1 of 6 Old 05-31-2016, 09:08 PM Thread Starter
kryogen
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2011 rear wiper motor fail?

Edit: See posts below, I did it and wrote a little guide. Thanks all.
____________________________

Did anyone have this issue?
my rear wiper motor looks like it's dying, it almost wont move, I need to help it by hand for it to cycle.

Is there anything inside there to lube or what?


2011 Grand Cherokee Overland V8, QD, QL
Nokian Hakkapelita 8 SUV Studded winter tires
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post #2 of 6 Old 05-31-2016, 09:52 PM
ColdCase
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I recall seeing a post on how to clean out the wiper bearing, don't see it now.

Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
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post #3 of 6 Old 06-02-2016, 08:49 PM
martin12qw
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Mines jammed, i cleaned, greased and it works.
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post #4 of 6 Old 06-02-2016, 09:19 PM Thread Starter
kryogen
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Yeah, I just did it (even though it was under warranty, it would require more time to 1: call, take appointment. go there, wait for them to check. go back, bring it back for them to replace, oh god...

It's quite easy. Mine was badly rusted so it required penetrating oil to remove nuts.

basically:
remove rear wiper arm.(I needed a gear puller for that, it was rusted in the splines), remove rubber boot,
then unbolt the large bolt, then in the cargo space, remove black cover, then remove 2 bolts holding the assembly, unplug, and you can remove the whole assembly.

Bring on bench, open the whole thing, remove gears
Now, what's left is the shaft in the housing.

Mine needed a pair of vise grips to turn.... Oil it, then I had to hammer it inside
Then you remove the whole shaft assembly by the inside.

Then I used a wheel brush to clean the heavy rust on the shaft.
(The wise way to do it is to remove most rust before trying to hammer it in....)

Then, basically, just grease everything and assemble. It now turns with the fingers.
There is a timing mark that you need to check when reassembling, just align the 2 triangles on the gears.

It's dark outside and mosquitoes are out, so I will reassemble tomorrow morning and report.
I will use silicon grease inside the boots to prevent water damage to shaft.

It takes around an hour to do.
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Nokian Hakkapelita 8 SUV Studded winter tires
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post #5 of 6 Old 06-02-2016, 10:54 PM
Nonstop
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Awesome write up, this will be one of those "it feels like a new jeep again" repairs for me. Mine sounds like someone punted a goose, not a good thing.

2000 WJ 5.2 V8
2011 WK2 V6
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post #6 of 6 Old 06-03-2016, 10:30 AM Thread Starter
kryogen
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Ok, I finished the job, so there are a few things to note:

1: the wiper does not activate when the window is open. I could not figure out why it did not work, checked fuses, fit, etc, and eventually I just got into the cargo area, closed the hatch, and tadam... works.
2: It does not matter how you reinstall the white gear. Don't worry about that (indexing).
The metal arm goes into the hole of the white gear that has metal in it (only 2 holes, use the one with metal).
The ONLY thing that has to be properly indexed, is the arm to pivot teeth. There are 2 indexing symbols, they are easy to see. Just align the 2 triangles and you are done. Can't fail at that, the teeth are pretty large.

Mine now works SO much better than ever. It's fast, smooth, and it just works.

If your rear wiper is slowing down, you should really do this fix

2011 Grand Cherokee Overland V8, QD, QL
Nokian Hakkapelita 8 SUV Studded winter tires
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