Announcement

Collapse
No announcement yet.

Window motor rebuild

Collapse
This is a sticky topic.
X
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Window motor rebuild

    This is a rebuild of the window motor from a 1988 GTX.

    You will need the following tools:
    #2 phillips head screwdriver
    8mm socket, either deep or with an extension
    flat head screw driver
    pliers
    snap ring pliers (maybe)
    1000 grit sandpaper
    Click image for larger version

Name:	Tools Needed.jpg
Views:	1
Size:	89.8 KB
ID:	1262878

    Here is a picture of the front side of a window motor assembly:
    Click image for larger version

Name:	Front Side of Assembly.jpg
Views:	1
Size:	85.8 KB
ID:	1262879

    Here is a picture of the back side of the same assembly:
    Click image for larger version

Name:	Back Side of Assembly.jpg
Views:	1
Size:	75.3 KB
ID:	1262880

    If you have not already done so, remove the clamp holding the plastic tube in place and remove the tube. There are a bunch of metal tabs accessible from the back side of the assembly. Straighten out all the tabs. Remove the small metal plate from the base near where the tube was. There are three screws holding the motor onto the plastic base. Remove these three screws. You can now remove the motor from the base.
    Click image for larger version

Name:	Disassembled assembly.jpg
Views:	1
Size:	76.6 KB
ID:	1262884

    Examine the drive gear. A good gear will look like this one from a passenger side:
    Click image for larger version

Name:	Good Plastic Drive Gear.jpg
Views:	1
Size:	76.3 KB
ID:	1262889

    A bad drive gear will look like this one:
    Click image for larger version

Name:	Bad Plastic Drive Gear 1.jpg
Views:	1
Size:	74.2 KB
ID:	1262881

    here is another picture of a bad gear:
    Click image for larger version

Name:	Bad Plastic Drive Gear 2.jpg
Views:	1
Size:	69.8 KB
ID:	1262882

    This will give you the click, click click sound. Unfortunetly, this part cannot be purchased seperately so if it looks like this, you either buy a new assembly or find a passenger to swap parts with.

    Here is a picture of two plastic chains:
    Click image for larger version

Name:	Drive Chains.jpg
Views:	1
Size:	96.3 KB
ID:	1262888

    Note the one on top has a lot of black stuff on it. This is the residue from the drive gear going bad. Clean off the drive chain and look for brown spots like these:
    Click image for larger version

Name:	Bad Spot in Chain.jpg
Views:	1
Size:	51.6 KB
ID:	1262883

    They indicate a spot where the click, click, clicking has fried the chain. This chain cannot be reused and was discarded.

    Now, let's take the motor apart. There are two phillips head screws at the base of the motor. Remove them then just pull the shell off the motor. You will see something like this:
    Click image for larger version

Name:	Disassembled Motor.jpg
Views:	1
Size:	56.2 KB
ID:	1262885

    Take a close look at the commutator end. In this picture you can see a black stripe arond the commutator:
    Click image for larger version

Name:	Commutator Before.jpg
Views:	1
Size:	107.0 KB
ID:	1262886

    using your 1000 grit sand paper, sand this black stuff off to get this:
    Click image for larger version

Name:	Commutator After.jpg
Views:	1
Size:	90.0 KB
ID:	1262887

    Stuff the commutator back into the shell, then stuff the motor back into drive gear assembly and put your two screws back in.

    Here is a picture of the plastic bases. Not that one has more black residue from the drive gear going bad. Clean up these pieces and spray them with lube.
    Click image for larger version

Name:	Plastic Bases, Dirty and Dirtier.jpg
Views:	1
Size:	63.9 KB
ID:	1262890

    After cleaning all parts and lubricating with your favorite soft grease, reassemble the parts. Make sure to stake the metal tabs down tightly!

    Comments?

    Bob

    #2
    Great write up. I had taken mine partialy apart to fix, lubed it and it helped a little but still slipping. Ill be trying this over the winter. Any idea if we can still get new chains or drive gears from mazda?(prob not)
    "See that car, in the 80's that car was deadly." Random man to his son while passing the GTX in a parking lot

    Originally posted by neuspeedescort
    the proper spelling would be "Launchabilitiness" i do believe.
    -88' Mazda 323 GTX, 1.8t, Modified Magazine May 2012
    -88' Mazda 323 GTX, caged and ready for dirt
    -93' Mazda Miata, half caged
    -09' Mercedes C63 AMG
    -87' Toyota Land Cruiser, 33's with slight lift, safari style!

    Comment


      #3
      When I went, I had to order a full assembly, parts were not available. The next question is: What other cars used this system? From this we can then search junkyards for passenger side and/or rear door motor assemblies to salvage the gear and chain out of. Anyone????

      Bob

      Comment


        #4
        rumors are that the 929 of the same era had the same style
        "See that car, in the 80's that car was deadly." Random man to his son while passing the GTX in a parking lot

        Originally posted by neuspeedescort
        the proper spelling would be "Launchabilitiness" i do believe.
        -88' Mazda 323 GTX, 1.8t, Modified Magazine May 2012
        -88' Mazda 323 GTX, caged and ready for dirt
        -93' Mazda Miata, half caged
        -09' Mercedes C63 AMG
        -87' Toyota Land Cruiser, 33's with slight lift, safari style!

        Comment


          #5
          Yep..88-89 929 front doors only....front door also in second gen Escorts(much easier to find and up to 1995) have the exact same unit and are in my GTX #2 working fine.....of course look for a low mile car and you will be better off.
          Clay

          Comment


            #6
            I know this is a BF thread.. but that sure looks like the BG power window assembly. Are you sure that sprocket isn't the same as dealer part # FB05-58-581 (approx. $14). It's impossible to see measurements in these pics but it might be worth while to compare a used BG sprocket. I have a few sitting around the shop.

            Here's the only picture I have available of that part number.
            Last edited by martiniac; 12-17-2009, 09:12 PM. Reason: added picture
            miss my '93 LX at every corner
            photo album
            Catch me on Facebook

            Comment


              #7
              I would guess it would work...if all else fails the BG regulators fit in the BF cars so just rebuild them and use them.
              Clay

              Comment


                #8
                I used 626 motors when I installed power windows into my turboed 323 DX. Almost a perfect fit.
                sigpic Horsepower is the force that determines at what speed you hit the wall, Torque is the force that determines how far you take the wall with you after you hit it.

                Comment


                  #9
                  looks very similar to my '89 tracer. passenger side wiper moves the gear, drivers does not...when i flick on the wipers nothing happens. what to do? fuse is good. "wiper" light is on in the dash.
                  ~LIVE FAST, DIE YOUNG~

                  Comment


                    #10
                    Thank you for this post! Both my windows are having troubles going up I'll have to check if this is the issue.

                    Comment


                      #11
                      Thanks for the information and tutorial. Much appreciated.

                      Comment

                      Working...
                      X