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DISCO3.CO.UK > Maintenance & Mods (D3)

Rear wiper problems

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Jondotnet

Member Since: 24 Dec 2020
Location: North York’s
Posts: 97

Rear wiper problems

Hey folks,

Having issues with the rear wiper. It’s been a bit intermittent for a while but now just makes a grinding noise and doesn’t move.

I have stripped the motor out of the tailgate and it works fine. I gave it a good clean and lube, refitted without the arm and all works fine.

I gave the arm a good clean and lube so it seems to work as expected with the spring/hinge.

I refit the arm and it’s not working again.

Any suggestions on what to try next?

Thanks.

25th Sep 2021 9:15 pm

Pete K

Member Since: 15 Jan 2016
Location: GL
Posts: 10724

2005 Discovery 3 TDV6 HSE Auto Rimini Red

DID i DREAM IT, or did I read the gears strip inside ?

26th Sep 2021 9:05 am

M3DPO

Member Since: 22 Sep 2010
Location: Notts.
Posts: 8240

2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris Grey

Is the spline worn that the wiper fit onto?- if that's ok the gearbox in the wiper box has failed. It can when others can't,
It will when others won't,
It goes where others don't.

26th Sep 2021 12:15 pm

Jondotnet

Member Since: 24 Dec 2020
Location: North York’s
Posts: 97

Thanks, looks like the gears are stripped.

Will have a look at a second hand one first I think having seen the price of new ones!!

27th Sep 2021 3:25 pm

Jondotnet

Member Since: 24 Dec 2020
Location: North York’s
Posts: 97

I have stripped down my wiper motor and can see that the plastic gear is stripped on one side. Its created a nice grove in the plastic.

I did have a look at a second hand one but unsurprisingly it had the same issue.

Is it possible to get the gear as the rest of the motor is in very good condition?

Just trying to avoid spending £150+ on a new one

ta

1st Oct 2021 1:16 pm

Jondotnet

Member Since: 24 Dec 2020
Location: North York’s
Posts: 97

If anyone is interested, I am going to give one of these a go:

https://www.ebay.co.uk/itm/222989477659

For the sake of £11 I thought it was worth a try

I will update the post with the results

1st Oct 2021 1:28 pm

Jondotnet

Member Since: 24 Dec 2020
Location: North York’s
Posts: 97

Update on this - The gear works perfectly.

The gear seems to be sold as a replacement for a Freelander wiper motor with no mention of a disco 3

Really easy job to replace.

1. Remove wiper motor
2. remove 6 screws holding back plate on
3. remove toothed bar that drives the wiper shaft
4. remove the plastic gear being careful not to lose the spring washer behind it
5. remove the brass electrical contact from the existing gear and push onto the back of the new gear. Use a dab of superglue to hold down if needed
6. refit the gear, the drive bar and the back plate.
7. Wash the silicone grease of you hands and refit the motor.

All of this assumes that the wiper shaft is free and turns easily.

5th Oct 2021 3:23 pm

Pete K

Member Since: 15 Jan 2016
Location: GL
Posts: 10724

Thanks for the link, feedback and guide

5th Oct 2021 5:59 pm

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