Tail gate regulator spring replacement. - Chevelle Tech
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post #1 of 4 (permalink) Old Jun 28th, 19, 10:51 PM Thread Starter
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Lyle
 
Join Date: Jun 2019
Location: Modesto, CA
Posts: 27
Tail gate regulator spring replacement.

Been reworking the tailgate regulator, had to take the tailgate apart from the inside when the
window would not move. Got everything cleaned up and loose, all wiring cleaned up.
Clockspring seems really weak, window drops fast but crawls up.
Spring can be removed by hand. Is there a replacement? Bought a Blazer spring,
won't fit. Is this a common problem? Any ideas are welcome.
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post #2 of 4 (permalink) Old Jul 3rd, 19, 10:42 AM
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Daryl
 
Join Date: May 2006
Location: So Cal
Posts: 64
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Re: Tail gate regulator spring replacement.

Quote:
Originally Posted by lkmarsh View Post
Been reworking the tailgate regulator, had to take the tailgate apart from the inside when the
window would not move. Got everything cleaned up and loose, all wiring cleaned up.
Clockspring seems really weak, window drops fast but crawls up.
Spring can be removed by hand. Is there a replacement? Bought a Blazer spring,
won't fit. Is this a common problem? Any ideas are welcome.
I have the same problem.

Question for you - what have you done with the wiring back there? I ask because the motor grounds through the tail gate frame and the hinges. My 65 was getting rusty so I added a ground wire from a motor mounting screw out with the power loom and screwed it to the frame. Helped mine a lot.

Back in 95 or so I took my tail gate/window out and apart. Pulled the motor off the assembly and the spring sprang! I rewound it and I think I did it too tight as the window sticks out of the tail gate about an inch and will not go in any more even with pushing on it.

I also put relays in the tail gate with a fused hot wire running from fuse box to tail gate. So the power to run the motor dose not go through either of the switches but the relays in the tail gate.

After all this the window still goes up slow - it is better but slow and labored. I think I need a new motor.
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post #3 of 4 (permalink) Old Jul 3rd, 19, 10:46 AM
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Daryl
 
Join Date: May 2006
Location: So Cal
Posts: 64
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Re: Tail gate regulator spring replacement.

I also put in a new American Autowire wiring harness, it did not have tail gate power window wiring so I added the wiring for that while running the rear harness.

Yellow and blue wires at bottom.

The fused power wire runs down the passenger side to the back and joins these wires at the right rear tire well.
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post #4 of 4 (permalink) Old Jul 3rd, 19, 11:47 PM Thread Starter
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Lyle
 
Join Date: Jun 2019
Location: Modesto, CA
Posts: 27
Re: Tail gate regulator spring replacement.

I converted to electric windows when I bought the car, using factory wiring and parts from a 69. Cleaning off the rust made the biggest improvement. Added a factory reversing relay commonly used for door locks that initially did not work. Turns out the three-wire motors wont tolerate having either drive terminal grounded, which the relay does by default. Two-wire motors require default grounding, and I'll swap one in to see if the motor is the problem. Used shrink tube inside the relay to prevent grounding. Diodes on the drive wires would work too. Had the ground problem, tossed the safety switch, and I will also run a ground wire through the loom into the cab. I have never been able to wind any window spring by hand, so I think it's ready to break. The Blazer spring I bought wants a thinner capstan, so it won't fit the wagon. Yet. Friday I will look at the Impala's regulator to see if they match, got a line on one of those. I used the factory wiring to trigger the relay, and new wires from the relay to the motor, and spliced the hot wire to the relay hot, so no real current flows through either switch. Works, but too slow rising and too fast dropping.
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