wipers pass inspection then die - Defender Source
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  #1  
Old December 4th, 2013, 10:11 PM
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Marc
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wipers pass inspection then die

At least the Rover was considerate..(this time)

The morning before a scheduled NYS inspection, my wipers were running very slow and needed and assist by hand before they got going...after I assisted them, they seemed to work ok all day without assist, parked right etc.. That afternoon the truck passed inspection. That was yesterday. This evening nada, wipers won't turn on. No play in the arms and they are tight, no movement of the spindles. Switching ignition to *on* and operating the wiper switch, I hear a click.

Didn't have time to check them out yet, will do in the morning. Whats your best guess;
Wiper switch on column facia, wiper motor park switch? (other than the fuse)

Thanks for any thoughts on the subject.
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  #2  
Old December 5th, 2013, 04:08 PM
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Ben Olson
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Check the wiper homing switch ( little white plunger type switch on the wiper gear box ) if the contacts are fried you get very intermittent wipers
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  #3  
Old December 5th, 2013, 04:16 PM
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Marc
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will check the switch.

I think the wiper motor gear is seized, taking the motor out to take it apart for a look see.
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  #4  
Old December 6th, 2013, 10:09 AM
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So I got the wiper motor out, took off the backplate, checked the gear, nothing looks abnormal.
Tried jump starting the motor at the 3 prongs of the limit switch with a ground to the body = nothing.

Question - the gear and motor spindle/shaft will not rotate by hand. Is this normal, or should the gear be able rotate in the housing by hand/help when the drive and cable are disconnected?.
Trying to see if the motor seized, or if no rotation is normal, I would proceed with getting a new limit switch then see if the dang thing moves.
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Old December 6th, 2013, 12:05 PM
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check my posting a few months ago. I also sent you a pm. The motor is not seized, one of the wiper spindles is seized.

If you are replacing the switch you should replace the entire motor.
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  #6  
Old December 6th, 2013, 12:15 PM
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Marc
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Quote:
Originally Posted by Ben01 View Post
check my posting a few months ago. I also sent you a pm. The motor is not seized, one of the wiper spindles is seized.

If you are replacing the switch you should replace the entire motor.
Thanks, will check the spindles ! leaning towards a new motor ..thanks!
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  #7  
Old December 23rd, 2013, 09:55 PM
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Fixed;

Problem was the wiper motor. Got a new one (without the gear) and re-used the old gear that was still in good shape.

Just for the record;

Check related fuse.
Removed steering column covers for access to wiper switch.
Wiper motor cover/bottom left dash was removed to access the wiper motor.
Testing for power both at the switch and the motor was good.
Trying to jump the motor with a 12V power source had no effect.

Remove Wiper motor C mount (and back pad) to free the motor from firewall (still attached to wiper control cable).
With motor dangling, wiper arms were moved manually to the left , to drop the motor further down for better access to the cable rubber cover and cable connector to motor body. ( and to check if wiper boxes were not seized)
Un-screw cable connector from motor body.
Remove back of motor plate to access circlip that locks cable arm to motor/gear spindle and the cable (inside motor body).
Remove cable spindle arm carefully from the spindle and the cable as to not loose the arm washers & nylon bush.
Motor body is now loose from the cable (and free from the truck).
Remove circlip that holds gear spindle(outside of body spindle end) and take out gear carefully as to not loose spindle washers.
(re-use gear and washers / circlip)
Remove nylon cable slide ramp from body (pry up and out).
(re-use ramp)

Open back plate of new motor (came without gear or ramp as UK gearing is different)
insert old ramp in new body
insert old gear with washers and lock with old circlip, grease up the gear. (align arm pin on gear with cable ramp)
Insert cable/motor spindle arm to cable and motor gear arm spindle.
Lock arm with circlip to spindle and re-fit back of motor plate.
Move wiper arms outside to the right (to move motor body up) to help reconnecting cable screw / connector to motor body.
Mount motor to firewall with C-clamp/mount and rubber back pad.

Test wipers with ignition on.
Test wiper spray intermittent function and check wiper stop position.
Adjust arm position by relocating arms to desired pos. ( Mine were off by 5" as new motor's throw a little different)

That's basically the sequence I used, was easy with some awkwardness with unscrewing the cable screw and rubber boot and re-attaching same.

Hope this helps anyone checking on Wiper troubleshooting in search.
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  #8  
Old December 23rd, 2013, 09:58 PM
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Thanks for the write up.
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  #9  
Old December 23rd, 2013, 10:13 PM
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very nice write up, i ran my wipers all day today i generally make a point not to drive the rovers in the rain easier to dry the defender interior out than the classic
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