Not sure if this has been covered before - did a quick search and couldn't find anything on here so thought I'd share.

The rear wiper on my Rallye packed in the other day and stopped with the arm neatly in the 12 o'clock position!

I started checking wiring and got 12v to ground from one of the wires in the red connector and when I switched the wiper stalk I could hear the relay click on and off so I knew the relay was at least activating so assumed it was replacement motor time.

Found this post; http://www.pug306.net/forum/threads/146046-Rear-wiper-motor-not-working
where the guy suggests it's normally a seized mechanism so thought I'd try his fix and take some pics!

First challenge is to remove the wiper arm - I removed the 13mm nut and cleaned up the thread as much as possible and then sprayed it with WD40 several times over the course of a couple of days.

I used a puller to remove the wiper arm with only minimal damage to the top of the spindle. I think it would have definitely broke trying any other way!

With the wiper motor removed from the car via the 2x 10mm, then remove the assembly from the mounting plate via the 3x 10mm bolts.

Then you are left with the motor and you need to remove the part of the casing held on by 6 fixings. The guy from the original post had 6 bolts holding his on, I had what I assume must have been rivets. I tried cutting a notch into them to unscrew with a flathead screwdriver but no joy, so a sharp whack on each fixing point with a hammer and chisel and the back cover was off.



Then the gubbins inside. The black L-mechanism is the seized part, a little difficult to remove because it was all under a bit of tension. I managed to lever/tap it out and thought afterwards that if I had hooked the motor to a battery in reverse beforehand it would have relieved the tension on the components and they would have probably come out a lot easier.





With the black gear and spindle out I soaked it in WD40 for 20 mins to free it all up. Once worked fully free by hand it was time to re-assemble. The yellow cog has three electrical contacts underneath to read the position of the spindle. I only had lithium and copper grease lying around so reused the grease that was already in the mechanism to re-grease the cogs. Had I had some non conductive grease around I would have put a bit more in!



Time to test it, as the guy in the original post mentions the white wire is + and the black is -.



All good - a working motor!

I then whipped the spindle back out and spent a bit of time clearing the water channel through the middle so at some point I will be able to get a rear washer working (In my car the water feed tube must finish somewhere in the 3/4 panel as the current function of the rear wash is to make a little pool in the footwell!)

Finally time to put the backplate back on - I dispensed with the old gasket, drilled out 4 of the holes and put pan head screws in with a bead of silicone to seal.



Job done - and probably better to have one that has been properly freed up rather than one off a scrap car which could be nearly seized when you get it!

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Team Aircon Rallye

Yeah that is my arm in the pic. The car is Ph3 1999, wouldn't surprise me if the motor was a replacement - it has coloured dabs on it so looks like it's been sold by a scrappy.

Would I still have the wash coming through the wiper spindle on a Ph3 motor?

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Team Aircon Rallye