How do you lubricate a wiper motor?
Lubricate all moving parts, using silicone grease on rubber pieces. (Avoid using petroleum-based grease on rubber parts—it will deteriorate them.) Some wiper arms have a friction fit to the wiper post. To position the arms correctly, briefly cycle the power to the wipers to park them.
How do you fix a jammed windshield wiper?
To fix this, open up the hood of the vehicle and remove everything covering the windshield wiper transmission. Then, use a flathead screwdriver and hammer to knock the small tab back into place so the transmission catches on it again. Keep in mind that the exact procedure won’t be the same on all vehicles.
How long does a wiper motor last?
The wiper motor on a car is supposed to last a lifetime. Typically, this will not be the case due to the conditions that this part of a car is exposed to. The heat and moisture that a wiper motor is exposed to on a daily basis will eventually lead to you having to get it replaced.
How to troubleshoot a rear windshield wiper that still runs?
You can use process of elimination to isolate it as the problem. Make a fused power supply wire and ground wire. Apply direct voltage and make the motor run. If it runs and is not growling and noisy, it’s okay. Remove the wiper switch and inspect it. Test it for proper voltage supply.
How can I tell if my wiper motor is suspect?
Make a fused power supply wire and ground wire. Apply direct voltage and make the motor run. If it runs and is not growling and noisy, it’s okay. Remove the wiper switch and inspect it. Test it for proper voltage supply. If it’s okay, then by process of elimination, the module is suspect.
How does a wiper switch work on a car?
Before reaching the wiper motor, the wiper switch sends power to a relay. This relay serves two purposes. It allows a small current signal from the switch to control a large current that powers the wiper.
How do you test a rear wiper relay?
Test for voltage to the switch. Move the switch through its functions and make sure there is voltage present at each plug location. Follow the manufacturer’s guidelines for switch removal and test procedure for each specific wire location and function. Test the rear wiper relay.