How do you repair Rear window wiper expedition it is not moving?

Answer 1

What year? IF this is the window mounted wiper.. The one that the wiper is on the glass (even when the glass portion of the tailgate is open)....... NOT the deck mounted wiper that parks below the glass when not in use... To check to see if this is the problem: Open the glass Use a screwdriver to push the latch on the tailgate to the latched position (so the vehicle thinks the glass is closed) Now you shouldn't have the "Tailgate Ajar" message Turn on the rear wiper.. You'll see the connection plate (round steel disk with a hole near the edge) See if it rotates.. If yes, then... Using the PALM of your hand - DO NOT GRAB THE DISK!! - put pressure on it ONLY WITH THE PALM OF YOUR HAND to see if it will stop turning. If it still turns then the motor and gears are good :-) Then your issue may be a gunked up shaft on the wiper arm, see below.... They have a tendency to get gunked up and hard to move... Remove the nut that holds the wiper on DO NOT REMOVER THE ARM YET!!!! Clean a spot where the spline (on the arm) and the shaft meet Use a marker or nail polish(works best) to mark the arm and shaft for alignment when reassembling Remove the whole arm assembly On the shaft there is a small e-clip a washer and O-ring remove all those. Tip: If you think you might forget just what order the e-clip washer and O-ring go on. Use a digital camera or the camera on your phone and take a picture before disassembly... With the glass held partially open Push the shaft in (towards the front of the truck) *You may have to twist and pull from the back at the same time and also spray with penetrating oil* Once out.. CLEAN, CLEAN, CLEAN.. Including the brass pass thru shaft in the glass WD-40 or another penetrating oil, works best for cleaning... Tear a small strip from a rag and soak with penetrating oil and push thru the shaft and run back-n-forth till clean... Re-grease with a Lt. Grease (a spray-on type) or a lt. Coat of Never-Seez Reassemble.