Drivetrain Clutch Cable Adjustment

Discussion in 'Fox 5.0 Mustang Tech' started by 93GTosu, Jul 15, 2013.


  1. 93GTosu

    93GTosu Member

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    Hey guys,

    I just got my 93 GT running after sitting for ~4 years but it is having some trouble with t5...**I have a FRPP clutch quadrant and FRPP adjustable cable.**

    1) The car started and I tried to shift it into reverse but it wouldn't go in gear at all. I tried other gears and could maayyybbe get it in 2nd & 4th but it would start to whine and I was in the garage.

    I shut it off and couldn't get it into gear when it wasn't running either (if that matters?).

    2) I just crawled under the car and tightened up the cable a few turns. Now (not running), it will go into any gear without the clutch. I haven't started it yet to try it running.

    Could someone simplify the adjustment of the cable for me? Tightening up the cable engages the clutch earlier on the pedal press, correct??? How would I go from "not engaging" to "always engaged" in only a few turns of the nuts????
     
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  2. jrichker

    jrichker StangNet's favorite TOOL SN Certified Technician Founding Member

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    Clutch adjustment
    Do the clutch adjustment first before considering any other problems. With the stock plastic quadrant and cable, pull up on the clutch pedal until it comes upward toward you. It will make a ratcheting sound as the self adjuster works. To release to tension of the stock quadrant, use a screwdriver to lift the ratchet paw up and out of engagement with the quadrant teeth.

    A binding clutch cable will make the clutch very stiff. If the cable is misrouted or has gotten too close to the exhaust, it will definitely bind. The binding common to adjustable cables is often due to misplacement of the adjusting nuts on the fork end of the cable. This will also cause the cable to wear and fray. Both nuts should be on the back side of the fork so that the domed nut faces the fork and the other nut serves as jam or locknut to the domed nut.

    Clutch pedal adjustment with aftermarket quadrant and cable: I like to have the clutch completely disengaged and still have about 1.5” travel left before the pedal hits the floor. This means that I have only about 1” of free play at the top before the pedal starts to disengage the clutch. Keep in mind that these figures are all approximate. When properly adjusted, there will not be any slack in the clutch cable. You will have 4-15 lbs preload on the clutch cable.

    Loosening the cable adjustment nut (throwout bearing arm moves to the rear of the car) moves the disengagement point towards the floor.
    Tightening the cable adjustment nut (throwout bearing arm moves to the front of the car) moves the disengagement point towards the top of the pedal.


    The quadrant needs to be replaced if you use any type of aftermarket cable or adjuster. My preference is a Ford Racing quadrant, adjustable cable and Steeda firewall adjuster. The adjustable Ford Racing cable is just as good as the stock OEM cable. It allows a greater range of adjustment than a stock cable with a aftermarket quadrant and firewall adjuster. Combined with the Steeda adjuster, it lets you set the initial cable preload and then fine tune the clutch engagement point to your liking without getting under the car.

    Using a stock OEM cable, firewall adjuster and a single hook quadrant may result in not having any free pedal travel before the clutch starts to disengage. I found this out the hard way.
    See Summit Racing - High Performance Car and Truck Parts l 800-230-3030 for the following parts.
    Ford Racing M-7553-B302 - Ford Racing V-8 Mustang Adjustable Clutch Linkage Kits - Overview - SummitRacing.com Cable and quadrant assembly $90
    The Ford Racing Adjustable cable is available as a separate part:
    Clutch Cable, Adjustable, Ford, Mercury, 5.0L, Kit[​IMG]

    Steeda Autosports 555-7021 - Steeda Autosports Firewall Cable Adjusters - Overview - SummitRacing.com Steeda firewall adjuster. $40

    [​IMG]
     
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  3. 93GTosu

    93GTosu Member

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    Thank you sir! I will try adjusting the cable some more using this.
     
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  4. 93GTosu

    93GTosu Member

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    Ok, I tried to adjust the cable but am still having the same issue.

    I started with the cable loosened on the throwout bearing arm (?) with ~1/8 - 1/4" deflection on the cable when pulled with my finger. Would not shift into gear while running but immediately went into all gears (without using clutch pedal) when shut off.

    Then, I tightened the cable up to where there was ~1/8" or less deflection on the cable and still had the same condition.

    What should I look for next? The car shifted (OK but not perfect) when I put it away 4 years ago. Other than the clutch cable stretching what parts would deteriorate over time?

    Thanks!
     
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  5. jrichker

    jrichker StangNet's favorite TOOL SN Certified Technician Founding Member

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    The cable should have 4-15 pounds of preload tension on it - that means no slack or deflection on the cable when you press on it.
     
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  6. 93GTosu

    93GTosu Member

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    Got it, thanks! It shifts great now.

    It's idling a little rough and needs some loose ends tied up, so I may be back for help. You're awesome as always!
     
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