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post #1 of (permalink) Old 11-04-1999, 04:25 PM Thread Starter
Mud in my Veins
 
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electric 4wd broken

OK, I'm tired of beating on my 4wd engage motor every time I want to go into 4wd! I should say not every time, but every now and then it won't engage when I hit the button and the only way to get it to go is to give it some TLC with a hammer. What is likely the cause? Awhile back I read that it might be the motor binding and 500 bucks would fix it, but I don't care that much.

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post #2 of (permalink) Old 11-04-1999, 11:07 PM
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Re: electric 4wd broken

Hey Muddy:
The solenoid in the motor-actuator tends to hang up when 4WD is infrequently used (no insult intended!), and a good swift kick in the case tends to free it up. I have friends with electronic 4WD LMBs who have operated this way for many years without difficulty (inconvenient when it happens in a deep puddle, though). The new motor-actuator is about $330 at our local NC/VA dealer, but he will talk you out of buying it and tell you to continue to tap the housing (use a crescent wrench or light ball peen...we don't want to crack the housing!). He's an honest mechanic! Good luck.

Dave
'79 Bronco
'89 Trooper
'86 Trooper II
post #3 of (permalink) Old 11-04-1999, 11:56 PM
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Re: electric 4wd broken

The contacts inside the motor get corrosion on them and lose contact.
The Cheap way to fix em without replacement, Go to parts store and buy a SET od tamper-proof Torx bits, I think it's a T-27 (I spent $5.00), mark (index)and take off the round, flat cover, and with some emery cloth clean the brass contacts. reinstall the cover and it will work fine.
Now if you have to remove the entire motor form the t-case, mark where it goes so it will return in the exact spot (Index)
Done this to many Explorers, Rangers, F-150's, and Bronco's with the Touch Button 4x4 and never had a problem.


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post #4 of (permalink) Old 11-05-1999, 10:50 PM
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Re: electric 4wd broken

Thanks, rock! Great to have a Ford Tech here to get us past interim/short-term fixes to the truth. I'll pass the info along to the "tappers" out there!
Keep the sunny side up on the Sammy's.

Dave
'79 Bronco
'89 Trooper
'86 Trooper II
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