Does anyone know any tricks to repairing the right hand side wiper arm on a 1990 SAAB 900i. The small cable that goes onto the wheel that moves the wiper broke. I have a replacement cable but i can't seem to get it on. I'm hoping there's a simple solution or is it just trial and error until i get it right.
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Re: trying to repair right hand windscreen wiper
I believe the cable runs in the channel, and loops once around the wheel, with the wheel above the channel; i.e. the cable and channel is at the bottom of the wheel when installed. One end of the cable is fixed to the end of the channel where the wheel is, the other end likely mounts to a slot in the channel.
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You need to take off the scuttle pan which is located just under the windscreen I know on the newer model this is held on with a few torque bolts and 10mm bolts this will give you access to the wiper motor and the wiper arms and hopefully give you the answer to your problem
I hope this helps
Carefully extract the wiper arm out from the axle. In some cases you need to use an extracting tool. Heed of the windscreen !!! How to change a wiper motor & repair wiper mechanism on Audi A4 First time you must diagnose why windscreen wipers going slow and/or stopping. In order to find out the cause of wipers stopping you can try follows: 1. Carefully extract the wiper arms from their axles (two pieces). In some cases you need to use an extracting tool. Heed of the windscreen !!! 2. Disassemble the plastic covers from the bottom of the windscreen. 3. With the bonnet up you can start the engine, (transmission in "N" or "P" position and parking brake on). Now you must switch on the control lever of the wipers, and go to the engine compartment. If the wiper motor runs let the wiper motor running for a few minutes and switch off. Go to the step 4. If the wiper motor do not runs you must check first the electrical feeding of the motor. It is necessary to unscrew three bolts of the mechanism and disconnect the electrical coupling (difficult assurance). If the electrical feeding is OK you must replace the motor - steps 5, 6, 7. If not you must check electrical connections, the control switch of wipers and electric cables. 4. Now you must check the two bearings of wiper mechanism with your hand. In the most cases the left bearing is out of order (is very hot). This is the most encounter fault of the wipers running at Audi. 5. For have enough space to manipulation the wiper motor together with their mechanism you must extract the plastic cover of the engine computer box, and extract also the box screws. Then you can move slowly the engine computer box, just for a few milimeters. 6. You must disconnect the electrical coupling of the motor (difficult assurance), unscrew three bolts of the mechanism and extract together with the motor. You must move them slowly between windscreen and engine computer box until the wiper motor go out together with the mechanism. This is the most difficult operation! 7. Now you can repair the bearings, replace entire wiper mechanism or replace the wiper motor. It is not very simply, but it works. Heed of the windscreen !!! Refit all in reverse order.
The left and right wiper are on the same fuse and same switch, as well as the same wiper motor. That being said- if one works and the other doesn't, the fault lies with the wiper motor itself, or with the wiper shaft (where the arm connects to the motor.)
A wiper motor has 2 output shafts that either wiper arm connects to. At the base of your left wiper arm is a small cap. (there's one on the right side too, but let it be since it is working!) Remove this and unbolt the wiper arm from the output shaft and pull outwards to remove it.
When you examine the assembly you will notice that the wiper arm and output shaft are splined, which allows the rotational movement of the output shaft to be transferred to the wiper arm. It is common for the contact area of these splines to become damaged. This is often caused by excessive drag on the wiper arm and blade. (ie running the wipers over a dry windshield, or trying to unstick a wiper blade that is frozen to the windshield)
The 1st test is to turn on the wipers and observe the now exposed wiper shaft. Does it spin at all? If it does then problem is damaged splines on the wiper arm. (the arm is made of much softer metal than the output shaft, which makes it easier to repair this problem.)
If it turns out that the splines are damaged the 1st thing to try is to clean them up a bit. I have had luck using a very sharp awl to trace the path of the splines. A locksmiths file is very useful if you need to reshape them a bit. After cleaning up the splines reattach the wiper arm and see if it works. If not the arm will need to be replaced.
Now, if you test to see if the output shaft is turning and it is motionless while the other side wipes away, then the wiper motor and assembly needs to be replaced.
When reinstalling the wiper arm do your best to make its position match the other arm. press it onto the shaft and run the wipers a bit to make sure it is where you want it before bolting it back up.
smonahan, The rear wiper fuse is actually a circuit breaker. It will reset itself.
Your wiper arm has probably stripped were it attaches to the motor shaft. You can check by trying to move the wiper arm with your hand, if it moves back and forth, its stripped. A new wiper arm will be needed.
Try it and let me know.