How hard is it to adjsut the bands when you have the pan off.. ie: what are the steps and how much??

 

The front band is external to the tranny, and IMHO a little harder to get to (if you're dropping the pan anyway):


ADJUSTMENT - BANDS
FRONT BAND
The front (kickdown) band adjusting screw is
located on the left side of the transmission case
above the manual valve and throttle valve levers.
(1) Raise vehicle.
(2) Loosen band adjusting screw locknut (Fig. 74).
Then back locknut off 3-5 turns. Be sure adjusting
screw turns freely in case. Apply lubricant to screw
threads if necessary.
(3) Tighten band adjusting screw to 8 N·m (72 in.
lbs.) torque with Inch Pound Torque Wrench
C-3380-A, a 3-in. extension and an appropriate
Torx™ socket.
CAUTION: If Adapter C-3705 is needed to reach the
adjusting screw, tighten the screw to only 5 N·m
(47-50 in. lbs.) torque.
(4) Back off front band adjusting screw 1-3/4 turns.
(5) Hold adjuster screw in position and tighten
locknut to 41 N·m (30 ft. lbs.) torque.
(6) Lower vehicle.

The Rear Band is inside:

REAR BAND
The transmission oil pan must be removed for
access to the rear band adjusting screw.
(1) Raise vehicle.
(2) Remove transmission oil pan and drain fluid.
(3) Loosen band adjusting screw locknut 5-6 turns.
Be sure adjusting screw turns freely in lever.
(4) Tighten adjusting screw to 8 N·m (72 in. lbs.)
torque (Fig. 75).
(5) Back off adjusting screw 3 turns.
(6) Hold adjusting screw in place and tighten locknut
to 34 N·m (25 ft. lbs.) torque.
(7) Position new gasket on oil pan and install pan
on transmission. Tighten pan bolts to 17 N·m (13 ft.
lbs.) torque.
(8) Lower vehicle and refill transmission with
Mopart ATF +4, Automatic Transmission fluid.


All said and done, I thought it was fairly easy and I'm just a dangerous Saturday mechanic.

 

Dumb Q, what is the purpose or objective to adjust the bands? Shift points I assume but I am not a mechanic. Thanks

 

Am I reading this wrong? It says to tighten to 72 inch pounds then back off three turns, then torque the nut down to 30 something. What is the purpose of this?

 

Nope you are reading it right. The torqueing it down to 72 inch pounds basically "seats" the band. Then the backing it off to the spec puts the pre-determine amount of clearance in the band. The 72 inch pound is pretty critical, because it is pretty easy to stretch the band, with the amount of leaverage the adjuster screw has on it. The nut it is talking about is the lock nut, not the adjuster.

Paul

 

Is this the same procedure for an 06 48re? thanx

 

The bands work to hold the drums from turning during certain gear selections. They work just like a band-style filter wrench works on your oil filter. Over time, the bands wear a bit, stretch a bit, etc. The adjustment procedure puts the proper amount of gap between the band, the apply lever, and the servo that actuates the lever.

When the valvebody directs fluid to the servos, their pistons move a certain amount (maybe an inch). The idea of the band adjustment is to set up the mechanism such that when the servo's piston is at full travel, it's applying the proper amount of clamping force to the band. Too much force, and things get bent. Too little, and the drums slip within the band.

 

Any good locations to purchase a torque wrench for INCH pounds? I have looked some (about 4 months ago) and couldn't find any. I had a cheap one 4 years back and it did work on my old truck (once). I never trusted the torque range after that so threw it.

Just didn't want to spend $200 for a INCH pounds that might get used a couple of times compared to a good FOOT pound wrench used all the time.

Thanks.

 

[QUOTE=Nuttymopar]Any good locations to purchase a torque wrench for INCH pounds? . [QUOTE]

72 in/lbs = 6 ft/lbs

(You just divide by 12, or just use the 8nm)

see also http://www.onlineconversion.com/torque.htm

Your ft/lb torque wrench may go that low.

 

It also would depend on the range that the foot pound wrench was really designed for. Most foot pound wrenchs don't do to well at 6lbs. You prolly won't hear it click, nor feel it. Best way is to get an inch pound wrench.

 

For the occasional use, this one's served me well:

http://www.harborfreight.com/cpi/cta...temnumber=2696

 

I use a Snap On Techwrench part number: tech2fr100.

It can measure torque in ft.lbs., inch lbs., and nm. It will vibrate and beep when you have reached the set torque level. But becareful 6 ft.lbs. or 72 inch lbs. isn't much torque.