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V70 98 how-to adjust headlight wiper motor?

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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MotorTheresa
Posts: 44
Joined: 11 July 2024
Year and Model: V70 1998 B5252F/S MT
Location: Germany
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V70 98 how-to adjust headlight wiper motor?

Post by MotorTheresa »

I got a pair of good used headlight wiper motors.
I couldn't resist to open them and renew their grease...
So now I have one Motor that works fine and another one (left one) that adjusts with ignition on and works fine for one application, then slows down on the next application then coming to full stop in cycle. After some minutes cool down above behavior repeats.
I might have misaligned the gears when reassembling this one...
Right now it's sitting on the bench in this position here.
IMG_20250720_195728__02.jpg
IMG_20250720_195705__01.jpg
IMG_20250720_195720.jpg
The rack is in mid position now.
Who is able to provide a comprehensive how-to for gears assembly ?
I have read that the motor will align on first power up in the existing threads but there must be a proper relation between the control pinion and the orange translation gear upon installation.
Also I have checked the proper seat of the thermofuse but could not see an issue (visual check)
TIA
V70 1998 B5252F/S MT

scot850  
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Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
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Post by scot850 »

If the wiper unit is stopping or hesitating or even running slow, it is either the motor is failing or the thermal resistor. More likely both. I will look and see if I can find any photos I've taken of the motors when I have opened them for alignment purposes.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold

MotorTheresa
Posts: 44
Joined: 11 July 2024
Year and Model: V70 1998 B5252F/S MT
Location: Germany
Has thanked: 31 times
Been thanked: 11 times

Post by MotorTheresa »

Thank you Neil. I have some spare motors and thermofuses should they turn out to be the culprit.
V70 1998 B5252F/S MT

scot850  
Posts: 14864
Joined: 5 April 2010
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 1836 times
Been thanked: 1709 times

Post by scot850 »

I had a look last night and I only have pictures of P2 headlight wiper motors. I can post those if you think they may help.

P2 wiper motor
P2 wiper motor

Not sure if it is of any help.

Neil.
2006 V70 2.5T AWD Polestar tune
2000 V70 R - still being an endless PITA
2006 XC70 - Our son now has this and still parked in our garage
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold

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rolsen11
Posts: 74
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Year and Model: 2000 V70 SE
Location: Northern Minnesota
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Post by rolsen11 »

I made this post earlier this year regarding the thermofuse, it has some good pictures and some information on the function of the actuator. Hopefully it helps!

viewtopic.php?t=106117
2000 V70 SE - Bought sight unseen in Cleveland, currently my only car. Looks identical to my profile picture

MotorTheresa
Posts: 44
Joined: 11 July 2024
Year and Model: V70 1998 B5252F/S MT
Location: Germany
Has thanked: 31 times
Been thanked: 11 times

Post by MotorTheresa »

This post helped me understanding the motor a lot. It's a great resource.
V70 1998 B5252F/S MT

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