rebuilt headlamp motor problem
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Instructor
Joined: Feb 2007
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rebuilt headlamp motor problem
my headlamp took a dump the other day. when i would turn it on or off the motor would keep running. when i opened up the motor, the plastic gear was destroyed and the rubber piece pretty much exploded. got new plastic gear and new rubber piece. put plenty of grease on the gears. put the whole thing back together. headlamp worked perfect. . . for about 3 cycles. now its making the same noise. everytime that noise occurs the plastic gears is getting trashed by the metal worm gear. something is telling the motor to run longer then it needs to. any ideas?
Team Owner
Joined: Apr 2001
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From: S.W. Ohio. . . . . . NRA Life Member
first mistake; should of bought the brass replacement gear, and then it's brass on brass.
not really. There are no sensors telling the motor to stop. It's a straight timing function. Once fully open or closed, the motor is stalled until the timer shuts off voltage to the motor.
.
something is telling the motor to run longer then it needs to.
.
Last edited by Mike Mercury; Oct 2, 2008 at 04:06 PM.
Burning Brakes
Joined: Aug 2006
Posts: 1,217
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From: Stark County Ohio
first mistake; should or bought the brass replacement gear, and then it's brass on brass.
not really. There are no sensors telling the motor to stop. It's a straight timing function. Once fully open or closed, the motor is stalled until the timer shuts off voltage to the motor.
not really. There are no sensors telling the motor to stop. It's a straight timing function. Once fully open or closed, the motor is stalled until the timer shuts off voltage to the motor.
The power windows also work this way.
I’ve been known to be wrong – happened once in 1982 as near as I can recollect. 
Team Owner
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From: S.W. Ohio. . . . . . NRA Life Member
Tech Contributor
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From: Dyer, IN
Instructor
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Stick with the plastic gears. Your problem is not with the motor, it does use a torque shutoff by the way, It is your headlamp control module that is the problem. It is not shutting off the power to the motor at full open or closed. I had this same problem on my '01. I went through 2 sets of gears. I bought a used module, installed it and ..end of problem.
Good luck.
Good luck.
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