C4 Band Adjustment Question

[Gordys74]

I need to replace the seals on the Band Adjusters on my C4. I'm sure somewhere along the line I'll get the adjustment out of place. Anyone have any specs on how to adjust these correctly? Or maybe point me to a thread on this subject? Also, what kind of seals are these? Are they just an O ring type seal?

All help appreciated!
Gordy

 

[BUCKETOBOLTS]

The seal is made onto the nut. You should be able to get them at a transmission shop. As for the adjustment, the front or intermediate band, you torque the center adjuster to 120in/lbs(10ft/lbs) then back it of exactly 4.5 turns. Then tighten the jam nut without moving the adjuster. Do the same for the rear or low/reverse band except only back it off 3 rounds.

 

[BwoncoHowie]

The seal is made onto the nut. You should be able to get them at a transmission shop. As for the adjustment, the front or intermediate band, you torque the center adjuster to 120in/lbs(10ft/lbs) then back it of exactly 4.5 turns. Then tighten the jam nut without moving the adjuster. Do the same for the rear or low/reverse band except only back it off 3 rounds.

Note: 4.5 turns on the front band is for C-5 ONLY! as these have a fine thread adjusting stud. If you adjust a C-4 this way the adjustment will be too loose.

I suggest for best results 120 in-lbs to properly seat the band then back off...
Front band 1.5 turns.*
Rear band 3.0 turns.
before tightening the jamb nut.

(*=These are not Ford specs, but speaking from experience they work well for high performance applications and will add longevity to the bands & servos)

 

[Gordys74]

Thanks, Guys! Great info. Now maybe I can stop two more nagging leaks.

 

[73stallion]

do you have to re-adjust the bands if you only replace the nut itself?

 

[BUCKETOBOLTS]

Note: 4.5 turns on the front band is for C-5 ONLY! as these have a fine thread adjusting stud. If you adjust a C-4 this way the adjustment will be too loose.

I suggest for best results 120 in-lbs to properly seat the band then back off...
Front band 1.5 turns.*
Rear band 3.0 turns.
before tightening the jamb nut.

(*=These are not Ford specs, but speaking from experience they work well for high performance applications and will add longevity to the bands & servos)

Sorry that was just off the top of my head...

I don't guess you have to readjust them but I would think it was good maintenance to do so.