<VV> LM power top motor revisited

Charles Lee at Proper Pro Per chaz at ProperProPer.com
Mon May 28 20:42:29 EDT 2007


There is a heat-sensitive "fuse link" in the path of the motor, to detect 
when it consumes too much current, meaning it is either all the way up or 
all the way down.

This is a bi-metal "switch" near the battery, and it sometimes gets burned 
contacts, causing the top not to function.

You may have already checked this, but I know it drove me nuts many years 
ago before I figured it out.  Does anyone have an LM top electrical diagram 
?  I did, but it's burned into my memory and hard to get out.

Chaz

----- Original Message ----- 
From: "Michael Kovacs" <kovacsmj at sbcglobal.net>
To: "VV" <virtualvairs at corvair.org>
Sent: Monday, May 28, 2007 4:44 PM
Subject: <VV> LM power top motor revisited


> Thanks to all those who answered the first call. I still cannot get either 
> motor to operate.
>
>   There is 12V from the circuit breaker to the motor
>   There is 12V from the under dash switch to the relay for up or down via 
> 2 wires.
>   The relay will not click, and of course the motor will not run.
>  I get the same exact results with either relay or motor hooked up 
> properly and grounded.
>
>   I now suspect the problem is with the motor(s). The up or down 12 V to 
> the relay  also sends 12V into the motor (via 2 wires) to determine which 
> way the motor turns. This must also ground the relay to allow it to close 
> to send 12V from the circuit breaker to the motor. I think that whatever 
> device in the motor is supposed to ground the relay is not functioning.
>
>   I did not disassemble the motor, but is is clean inside and not rusty or 
> corroded.
>
>   There must be someone out there that can help diagnose this problem or 
> repair the motor.
>
>
> MIKE KOVACS
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