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2006 V70 rear wiper goes across, then stops and motor keeps buzzing

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jh_on_the_cape
Posts: 147
Joined: Mon Dec 07, 2009 8:13 am
Year and Model: 2006 V70 n/a FWD
Location: MA
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2006 V70 rear wiper goes across, then stops and motor keeps buzzing

Post by jh_on_the_cape » Thu Oct 12, 2017 12:08 pm

When I do the rear wiper, it goes across the back, then stops and the motor keeps buzzing along. So it is getting power.
When I help the wiper along a bit with my hand, it keeps going and returns to its home. But it will keep buzzing until I do this. WIper stops almost all the way across on the driver side.
I thought the spline to the wiper arm was worn out, so I removed the wiper arm and tried again, same thing, even with no wiper arm attached.
Is the motor worn out? The motor is expensive enough that I don't want to just try it.

I put the arm back on for now, but if I forget it's broken and activate the rear wiper, it goes across and buzzes (like the gears are grinding) until I pull over and help it with my hand.

Thanks!


Bright Red 1994 850 Wagon, nonturbo, FWD, stickshift 150k-ish miles SOLD
2006 V70 FWD nonturbo, boring silver A/T, 200k miles

Rattnalle
Posts: 103
Joined: Fri Sep 01, 2017 2:10 am
Year and Model: 2004 V70 2.5T
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Re: 2006 V70 rear wiper goes across, then stops and motor keeps buzzing

Post by Rattnalle » Thu Oct 12, 2017 12:49 pm

There is a large plastic cog inside the motor that is probably worn out locally which is why it works when you prod it. Yours is behaving exactly the same way as mine. You can find new 3D-printed cogs on ebay and replace it instead of getting a new motor. Its resonably cheap and easy to do.

Edit: The big white cog shown in the picture here: http://www.jagrullar.se/forum/viewtopic ... 5#p1028244
You can see the steel cog/screw attached to the motor at the top. This is where the plastic wears away.



jh_on_the_cape
Posts: 147
Joined: Mon Dec 07, 2009 8:13 am
Year and Model: 2006 V70 n/a FWD
Location: MA
Has thanked: 1 time

Re: 2006 V70 rear wiper goes across, then stops and motor keeps buzzing

Post by jh_on_the_cape » Fri Oct 13, 2017 7:56 am

thanks! i cannot read swedish. is it pretty straightforward to replace that cog?


Bright Red 1994 850 Wagon, nonturbo, FWD, stickshift 150k-ish miles SOLD
2006 V70 FWD nonturbo, boring silver A/T, 200k miles

Rattnalle
Posts: 103
Joined: Fri Sep 01, 2017 2:10 am
Year and Model: 2004 V70 2.5T
Location: Sweden
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Sweden

Re: 2006 V70 rear wiper goes across, then stops and motor keeps buzzing

Post by Rattnalle » Fri Oct 13, 2017 8:01 am

I thought so, yes. I did it without any instructions, just took a picture before so that I could compare the result to something.

I greased the axle as well while I had it apart.

There isn't too much more information about actually doing it in Swedish in that thread anyway, I just knew it had the right picture. 15 pages about a wiper motor is kind of impressive though..



jh_on_the_cape
Posts: 147
Joined: Mon Dec 07, 2009 8:13 am
Year and Model: 2006 V70 n/a FWD
Location: MA
Has thanked: 1 time

Re: 2006 V70 rear wiper goes across, then stops and motor keeps buzzing

Post by jh_on_the_cape » Fri Oct 13, 2017 9:53 am

cant find the cog on ebay?


Bright Red 1994 850 Wagon, nonturbo, FWD, stickshift 150k-ish miles SOLD
2006 V70 FWD nonturbo, boring silver A/T, 200k miles

Rattnalle
Posts: 103
Joined: Fri Sep 01, 2017 2:10 am
Year and Model: 2004 V70 2.5T
Location: Sweden
Has thanked: 1 time
Been thanked: 1 time
Sweden

Re: 2006 V70 rear wiper goes across, then stops and motor keeps buzzing

Post by Rattnalle » Sat Oct 14, 2017 5:37 am

I couldn't either now. Had to find the seller through my ebay history. That particular seller seems to have launched a webshop of their own instead. http://www.materflow.com/en/store/buy/p ... -gearwheel

But I guess it should be possible to find someone who can print the cog locally if you can find the model somewhere on the internet.



jh_on_the_cape
Posts: 147
Joined: Mon Dec 07, 2009 8:13 am
Year and Model: 2006 V70 n/a FWD
Location: MA
Has thanked: 1 time

Re: 2006 V70 rear wiper goes across, then stops and motor keeps buzzing

Post by jh_on_the_cape » Mon Oct 16, 2017 8:21 am

I ended up buying a used wiper motor for cheap.


Bright Red 1994 850 Wagon, nonturbo, FWD, stickshift 150k-ish miles SOLD
2006 V70 FWD nonturbo, boring silver A/T, 200k miles

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