308 window cable...how many revolutions??

Discussion in 'Technical Q&A' started by mwhite, Feb 2, 2005.

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  1. mwhite

    mwhite Karting

    Nov 10, 2003
    187
    Birmingham, AL
    Full Name:
    Matthew White
    I have pulled the window motor out and cleaned all the gears and relubed everything. Great right? Wrong. It came completely unwound. It is ready to go except for the fact that it is not wound at all and, of course, won't work. How many revolutuions do I make and on which cord? I know that it is one cord but it seems as if I wind the part that enters the bottom more than the one that enters the top. help please.

    thanks,
    matt
     
  2. Gianluca

    Gianluca Formula Junior

    May 6, 2003
    349
    Centreville, Virgini
    Full Name:
    Gianluca Chegai
    Matt,
    There should be 4-5 grooves and basically everyone should have cable on it. If you turn it one too many times, the cable would overlap at a point and 1 turn less would leave 1-2 grooves without cable.
    If, however, you have too many or too few turns, it should become apparent once you install the cable on the pulleys as it would be muchh too long and viceversa.
    Once you know the "loose" amount of cable is correct, you could install it WITHOUT clamping it to the window and then operate the switch to go all the way up (or down) until the cable runs out (for the given direction).
    Now push the window switch to the other direction so that a bit of cable begins to rewind on the spool. At this point (and let's assume you selected the up position) raise the window, by hand, as far up as it will go and clamp the cables to the window.
    Now the cable should be in the right position allowing the window to go the full up and full down. I am making any sense?

    While the up position is probably the best way to go (as it is an "objective" position while the down is "subjective" depending on the wear on the rubber buttons on the bottom ) it would help immensely to have a friend hold it while you tighten the cables.
    You may find, however, that in the full up position it could be a bit inconvenient to access the nuts of the window clamps. If this is the case, just make 2 reference marks on the cable and the clamps, actuate the switch until the cable reaches a more comforteable position and lower the window until the marks coincide and tighten the bolts.

    Disclamers: I have only done the 2 motors on my car. I am writing this out of memory. Probably this is NOT the professional way to do it. (but my windows work very well).

    You may need to tweak the above a bit but it should work.

    Best of luck.

    If the cables are in poor shape (nicked etc.) it may be difficult to replace them. I did my driver's side fine but the passenger's side had the cable so messed up (from PO attempt) that I replaced the cable with a new one (from SEARS) and it made the job a whole lot easier. (new cable was soft and limp).
     
  3. Verell

    Verell F1 Veteran
    Consultant Owner

    May 5, 2001
    6,907
    Groton, MA
    Full Name:
    Verell Boaen
    TIP:
    Use masking tape to hold the window in the up position while working on it.
     
  4. Nuvolari

    Nuvolari F1 Rookie
    Sponsor Owner

    Sep 3, 2002
    4,523
    Toronto / SoCal
    Full Name:
    Rob C.
    Tip #2

    Shove a rag into the ends of the window regulator (where the cable comes out of) to keep the wires from unraveling. Once everything is installed, pull the rag out. This of course assumes you remembered to leave a long end out to grab the rag from :)
     
  5. mwhite

    mwhite Karting

    Nov 10, 2003
    187
    Birmingham, AL
    Full Name:
    Matthew White
    O.K. maybe I am just car stupid or something. My cables are on all the pulleys ixcept the top one next to the A-frame window and I put it back on once motor is installed. It appears that the cord that runs up to that top/front pulley from the motor, doesn't need to be wound. It also appears that the cord that goes to the bottom pulley from the motor needs to be wound a lot. Is this right? I am totally confused and cannot get my window to operate correctly. Can I get maybe some advice from a different angle or with a little more detail so that I might can sort this out? I appreciate the advice, I guess that I am just having a problem following.

    thanks,

    matt
     
  6. paul 308

    paul 308 Karting

    Jan 13, 2004
    110
    Guildford, Surrey UK
    Full Name:
    Paul Deslandes
    #6 paul 308, Feb 4, 2005
    Last edited by a moderator: Sep 7, 2017
    Matthew

    I've just done this job myself and the answer to your question is 3 3/4 turns - including the "loose" one that runs around the door pulley system. Iinitially it doesn't matter how many of each end are wound on so long as its just under four in total. With the window up (use Verell's tip of holding it in place with masking tape) I had approx 1/4 turn on the "upward" cable exit and 3 1/2 turns on the lower, side exit. If you PM me your email address I can send you a useful archive post with a full description written by Verell and others with some pictures. Once you've got it all back installed but before you reclamp the glass to the cable, run the motor back and forth a couple of times, marking the cable with a bit of sticky tape to check where you should clamp it. The cable travel is slightly longer than you need for full window travel so set it such that when the window is fully up and fully down there is still a little cable left on the drum to avoid snatching and stretching the cable. It should make sense when you try it.....!

    The attached scrappy freehand sketch may help.

    When you reassemble, it helps to keep a little tension on the cable to avoid a rats nest but once you've got the cable threaded but still a little loose and not clamped to the window, run it back and forth very carefully with the motor and it will find its way into the grooves. You do need to keep an eye on the drum to make sure the cable doesn't tangle and snag when you're doing this.
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  8. cecinestpasunjan

    Sep 15, 2004
    51
    Frankfurt, Germany
    Full Name:
    Jan
    Hello Matt,
    I did it the following way:
    First I put 2.5 revolutions on both sides of the cord. Next, I got someone to tighten the cable while I installed the motor. After the motor was in place, I put the cables on all the pulleys while the second person still tightened the cables. If you have too many turns on the cord, you will - as somebody else already mentioned - notice that you don't get the cable on all the pulleys, if you have less turns, the cable will be too loose.
    My guess is that you could equally well have one side of the cable totally unwound as long as you have the appropriate (higher) number of revolutions on the other side, since this is exactly what happens when you operate the window (one end of the cable unwinds while the other side winds up).
    I noticed that if you put too much tension on the cable with the tensioner pulley, the system does not work (did not know why).
    B.t.w. I had to install the motor four times until I got the mechanism going.

    Hope this helps!
    Jan
     
  9. Sophia

    Sophia Formula Junior

    Aug 17, 2003
    298
    Dash Point/Federal W
    Full Name:
    Peter Barbin
    Don't forget your tool kit has the window crank lever in it. This was a godsend for me when I was doing a lube on all the cable pulleys. Insert, push and turn...I had a spool "unwind" and had an overlap problem. Using the hand crank and not the motor was beneficial in this circumstance. Major PITA! Been there and done that...I didn't get Verell's tip on the tape until it was too late, USE the tape :) PeterB.
     
  10. Martin308GTB

    Martin308GTB F1 Rookie
    Silver Subscribed

    Jan 22, 2003
    2,621
    Germany
    Full Name:
    Martin N.
    #9 Martin308GTB, Feb 4, 2005
    Last edited by a moderator: Sep 7, 2017
    Hello,
    just a small addition. There's a great helper tool for keeping the wires from unraveling while fiddling with the window motor assembly during reattachment.
    No clue where to get this clamp; it came together with an used window motor assembly I purchased from T.Rutlands some years ago.
    Verell, maybe a new Unobtainium project ? It makes life so much easier while reinstalling the window motor.

    Best Regards from Germany

    Martin
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  11. pad

    pad Formula 3

    Sep 30, 2004
    1,405
    Tequesta, FL
    Full Name:
    Paul Delatush
    I would have killed to get my hands on that tool!! I did the complete job last year including replacing the cables. The first door took over 6 hours, the second less than 2. In lieu of the tool, I wound up the spool as drawn above and used masking tape to keep the 2 end tightly together so they would not unravel creating a rats nest. After installing the motor assembly in the door, I ran the cable around the pullys. When I got to the last pully, I pulled on the cables to break the masking tape. There is an adjuster pully. Use that to contol the tension as you work the cable around.

    I put together about 10 pages on notes and pictures. If you PM me your fax #, I'll send it over. Maybe it will help.
     
  12. mwhite

    mwhite Karting

    Nov 10, 2003
    187
    Birmingham, AL
    Full Name:
    Matthew White
    o.k. It's been a week or so and I now know the entire window while I proceed to make my life more difficult. I just can't seem to get this to work. My cabel won't sit down into the grooves. It is kinked and crimped. I figure that I should just replace it. I have the cable but I don't know how to get into the spool so that I can take out that part of the cable that goes into the interior of the spool. Any help is appreciated.

    thanks,

    matt white

    P.S. You guys have helped me greatly. I would like to give something back. Here is what I offer: I am a mortgage broker and investor in rental property. If any of you would like advice I would be happy to assist.
     
  13. paul 308

    paul 308 Karting

    Jan 13, 2004
    110
    Guildford, Surrey UK
    Full Name:
    Paul Deslandes
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