850 - headlight wiper motors

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HAL9000F - 06 Feb 2007 20:25 GMT

Hi!
I have Volvo 850 from 1997, and its right headlight wiper motor is
faulty. My friend was visiting a couple of hundred kms distant scrapyard
and brought me both left and right headlight wiper motors for a really
small price. I was told in advance that one is faulty, but they didn't
know which one. And I was unlucky - now I have two broken right
headlight wiper motors :-)

Does anybody knows if it's possible to use healthy parts from the left
motor, and make the right motor work?

Here are the part numbers and pictures of both motors - right
0390206926, and left 0390206927:

http://www.fcpgroton.com/volvo850wiperwasher.htm

Thnx very much!!!

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Hal

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Mike F - 07 Feb 2007 12:42 GMT

> Hi!
> I have Volvo 850 from 1997, and its right headlight wiper motor is
[quoted text clipped - 16 lines]
> --
> Hal

I've only ever taken a right motor apart (why always right), but as I
remember, all of what I'd consider "failing" parts would not have been
different left and right. What's wrong with your motor(s)? Mine worked
very slowly for about 1/4 sweep, then stopped until power was removed
for a moment, then it would work slowly for another 1/4 sweep. The
problem was with a small plate that was designed to raise resistance
when the motor was on for a long time to prevent the motor from
overheating. (Like would happen if the blade was frozen to the
headlight.)

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Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)

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HAL9000F - 08 Feb 2007 10:00 GMT

>> Hi! I have Volvo 850 from 1997, and its right headlight wiper motor
>> is faulty. My friend was visiting a couple of hundred kms distant
[quoted text clipped - 16 lines]
>
> I've only ever taken a right motor apart (why always right)

Because it's harder to replace :-)

> but as I remember, all of what I'd consider "failing" parts would not
> have been different left and right.

That's what I think and hope for :-)

> What's wrong with your motor(s)?

The one in the car is only making constant buzzing sound and won't move...

Do you have any idea what that might be?

And the other I just bought looks fallen apart... The shaft is loose.
I did't have time to connect and test it yet.

> Mine worked very slowly for about 1/4 sweep, then stopped until power
> was removed for a moment, then it would work slowly for another 1/4
> sweep. The problem was with a small plate that was designed to raise
> resistance when the motor was on for a long time to prevent the motor
> from overheating. (Like would happen if the blade was frozen to the
> headlight.)

Ufff, I know how bad it sounds when I forgot that the rear wiper was
frozen to the tailgate glass...

Thnx, I'll try to fix it when I find some time by donoring healthy parts
to the broken one, and will post results here...

Bye,

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Hal

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