conaero
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With thanks to permission of Keith and James Pemberton for there how to guide:
I have been having the juddering problem with my wipers, and decided to have a go and sort it out myself. After reading James instructions below which are spot on. Only a couple of points to add, the wiper blades are a pig to get off a pal lent me a removal tool which made it simple. take a look here at one:
http://www.sealey.co.uk/PLPageBuilder.asp?gotonode=ViewProduct&method=mViewProduct&productid=10565
To grease the spindles properly remove the "C" clip, just pop it off with two small drivers, and disassemble but cover with a cloth when removing as you will be amazed where it fly’s to. Took me 15 min to find one. Don't worry about too much grease in the ball joints as any excess will just squirt out of a breather hole.
I took some pics of the procedure:
Removing the wiper and overhauling
I have been having the juddering problem with my wipers, and decided to have a go and sort it out myself. After reading James instructions below which are spot on. Only a couple of points to add, the wiper blades are a pig to get off a pal lent me a removal tool which made it simple. take a look here at one:
http://www.sealey.co.uk/PLPageBuilder.asp?gotonode=ViewProduct&method=mViewProduct&productid=10565
To grease the spindles properly remove the "C" clip, just pop it off with two small drivers, and disassemble but cover with a cloth when removing as you will be amazed where it fly’s to. Took me 15 min to find one. Don't worry about too much grease in the ball joints as any excess will just squirt out of a breather hole.
I took some pics of the procedure:
Removing the wiper and overhauling
- Remove the plastic trim caps from the nuts on the bottom of each wiper arm
- Undo the 13mm nut at the bottom of each wiper arm.
- Prior to removing the wiper arms note their rough position and use either a pencil or some tippex to mark the position of the arm relative to the mechanism (this will make it easier to put them back in the right position).
- Remove both wiper arms
- Next you need to remove the plastic scuttle trim at the base of the windscreen to expose the mechanism, to do this simply unscrew all the fixing screws holding it in place. Note do not fully undo (loosen off only) the 3no. Screws which sit more or less across the middle of the cover as these hold a series of fixing clamps in place so they only need to be loosened sufficiently to slide the trim off.
- Once the trim is free move it out of the way, I don't bother to fully disconnect the washer hoses, it'll move enough anyway.
- Next you will need to remove the drivers side scuttle trim which surrounds the right hand wiper mechanism I think there are three screws and you'll need to jockey it out as it is a fairly tight fit.
- The wiper mechanism will now be in full view. It's held in place by 3no. 10mm bolts. Undo these and disconnect the power cable to the motor.
- Remove the mechanism in it's entirety.
- Once on the kitchen table or you work top of choice you will notice the motor itself is shrouded by a rubber cover gently fold this back out of the way.
- This will expose the body of the motor and the control/gear housing. This is a circular housing, the top of which is covered with a white plastic top, you will need to separate this from the motor to be able to get at the control contacts.
- To do this firstly undo the screw securing the cable to the housing and then gently prise each of the retaining clips from around the edge of the housing.
- You should now be able to lift of the plastic top.
- Once open you will be able to see the wiper motor gear with it's electrical pickup tracks exposed and on the underside of the plastic cover 3no. Contacts.
- Firstly inspect the electrical pickup tracks for pitting or any other signs of arcing. If there is any gently polish out if possible using a mildly abrasive polish (solvo-autosol) or wire wool (be careful not to get bits in the mechanism grease if you use this)
- Note: Despite my blades shuddering badly in the past it's never resulted in particularly obvious pitting or wear on the electrical pickup tracks.
- What I generally do next is give the gear/housing a good clean and re-grease if needed.
- Clean the electrical pickups on the underside of the gear housing, I've previously used fine sand paper and even a small wetstone to ensure they are even and free of pitting.
- Gently bend the contacts up to ensure good contact.
- Once you've done this replace the housing lid, ensuring all the securing slips are engaged and secure the cable again.
- What I do next is to clean and regrease/oil all the linkages. It's surprising how much muck the joints can accumulate over time.
- I would normally take each of these apart individually to clean and re-lube, but do what ever your comfortable with. One word of warning the ball joint cups are actually easily removed but they can get brittle with age so go steady.
- Once you're done then the mechanism can be replaced in the reverse order of the above.
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