I did the same job on the motors of my 3/4ton Dodge truck. Was pretty simple!!! After having cleaned the chambers and all moving parts, oiled or greased them, the motors worked a lot betterrikgerards wrote:My wiper motors where working but at verry slow pace. If the engine was put to work (up hill or accelerating) the wipers stopped. One motor even didn't make its stroke complete. so it stoped midway.
In the vacuum chamber is grease as a lubricant, if this is old it becomes hard. If you open the wiper and remove the old grease and put new in the wiper motor functions as new. It is easy to do by your self on the kitchen table.![]()
Rik

Thierry.