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Unread 08-18-2014, 10:02 AM   #1
jamesrw30
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2004 WJ 
 
Join Date: Jul 2010
Location: Kingsport, Tennessee
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Rear Wiper issue

Suddenly my rear wiper will not pick up from the ramp it sits in. If I turn on the switch I hear and see the arm try to pick up but it will not go anywhere. I assume the motor is good. I hear it trying to work. Would gears be tripped out or just something in the binding up the arm? I am kind of at a loss where to go on this issue so any help would be very much appreciated.

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Unread 08-18-2014, 10:52 AM   #2
jeepfvr
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The nut that holds it from the back side may be allowing it to twist the motor itself inside the hatch. Take off the rear interior panel on the hatch turn on the rear wiper and see what it's doing.
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Unread 08-18-2014, 11:27 AM   #3
Double E
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It sounds like the wiper blade is binding at the base of the glass.
Flip out the wiper arm as if you were going to replace the wiper blade and turn it on. That will tell you if it is capable of sweeping.
The arm may just need to be bent a little when parked to get he blade to go past the base of the glass.
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Changes & fixes: Rear Addco sway bar & greasble bushings, upgraded headlights, upgraded tail lights, new hood struts (replaced 2X), new rear hatchglass struts, new radiator (replaced 3X), new oil pressure sending unit (replaced 4X), 2 new speed sensors, 2 new door lock actuators, new ignition key cylinder, chrome front tow hooks, Mobil 1 Synthetic 5/30, Purolator Pure One oil filter, EBC slotted & dimpled rotors, EBC Greenstuff pads, new front shocks (replaced 3X), new rear shocks (replaced 2X), new IRO steering stabilizer, new timing chain cover, new water pump, thermostat, new thermostat housing, new high pressure power steering hose, Michelin-X radials, new sunroof assembly, new single-piece lug nuts, new exhaust manifold studs & gasket on driver's side, new Durango alternator. Jeepforum.com sticker, Visit cobaltboatsforum.com when you can!
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Unread 08-18-2014, 12:04 PM   #4
jamesrw30
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I have done both of these and gotten the same results. When I lift it as to change the blade it still doesn't sweep. Everything on the motor seems to be secure also. First thing I did was pull the panel off the inside of the door and everything seems to be as it should be.
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Unread 08-18-2014, 12:57 PM   #5
SirSilvia
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take the wiper arm off and turn it on, then look to see if the motor shaft moves at all. I never use mine and it was crusted up from calcium/salt deposits and a little rust
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Unread 08-18-2014, 01:17 PM   #6
jamesrw30
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Makes good sense. I have never pulled a wiper arm off an remember seeing something on wjjeeps.com that it requires a tool to do so. I think it said a battery terminal puller. Is this the case or can it be done without?
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Unread 08-18-2014, 01:54 PM   #7
SirSilvia
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I used the claw side of a hammer and a piece of wood. to prevent dents.
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Unread 08-18-2014, 01:55 PM   #8
Double E
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I did without. Remove the nut and tap the edges of the wiper base first though.
On the windshield wipers I was able to get a claw hammer under it and pry up with some layers of cardboard under the fulcrum point of the hammer to protect. Couple of taps, pull in different spot, repeat.
Rock the arm around a bit too. A little PB blaster sprayed in there will probably help.
Battery term puller is smarter though.


Re-assemble with anti-sieze on the shaft.
__________________
2000 Laredo 4.7L Selec-Trac. 177K miles, Leather, 245 tires, tow package, crappy CD changer, full size spare, roof cross-rails & sunroof.
Changes & fixes: Rear Addco sway bar & greasble bushings, upgraded headlights, upgraded tail lights, new hood struts (replaced 2X), new rear hatchglass struts, new radiator (replaced 3X), new oil pressure sending unit (replaced 4X), 2 new speed sensors, 2 new door lock actuators, new ignition key cylinder, chrome front tow hooks, Mobil 1 Synthetic 5/30, Purolator Pure One oil filter, EBC slotted & dimpled rotors, EBC Greenstuff pads, new front shocks (replaced 3X), new rear shocks (replaced 2X), new IRO steering stabilizer, new timing chain cover, new water pump, thermostat, new thermostat housing, new high pressure power steering hose, Michelin-X radials, new sunroof assembly, new single-piece lug nuts, new exhaust manifold studs & gasket on driver's side, new Durango alternator. Jeepforum.com sticker, Visit cobaltboatsforum.com when you can!
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Unread 08-18-2014, 02:41 PM   #9
DC99
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In my case and others I read have the similar issue that the shaft get frozen in the housing from the elements. There is a nice right up but cant remember where I read it about removing the hatch cover, remove the motor assy and disassemble the motor to free it up, lube and reassemble. Maybe someone else can chime in on this issue. I did this with good results, never had a issue since.
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Unread 08-18-2014, 02:48 PM   #10
jamesrw30
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Thank you for the info everyone. I will look into this. Hopefully I can figure something out. It is at the body shop at the moment getting hail damage repaired so hopefully I can get on this once I get it back.
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