Band Adjustment "Backing Off" TRICKS!!!
#1
Band Adjustment "Backing Off" TRICKS!!!
Ok my fellow Pros, amatuers, and shadetree mechanics...I know there has been many post and discussions about the old band adjustments made to our wonderful tranny's and by now most of us that have done transmission fluid and filter changes have adjusted our own bands. We have all seen the standard spec sheet on 72 in pounds and "backing off" a set number of turns depending on the model we own. However, I do not believe I have seen a discussion on the proper way to "back off" the adjusting screw. So I thought I would start a post asking for opinions on the proper way to do this or the many different techniques that are employed to get it done right. I had to develop my own technique which I am certain can be improved upon because I am basically only "guessing" I really did turn the adjusting screw back 2 7/8 turns for example. I basically make a paint mark on one corner of the screw (that can later be scrapped off" that I use as a reference point. I then pick a spot within the tranny that the reference point would touch if I were to sraw a straight line to it and then proceed to slowly turn the screw with my torque wrench until I figure it hit the 2 turns or 2 7/8 turns depending on which band I am adjusting. There has to be a better way to do this, so please throw me and other viewers some advice and a more true way to get this done. Thanks!!!
#2
RE: Band Adjustment "Backing Off" TRICKS!!!
ORIGINAL: joe188@earthlink.net
Ok my fellow Pros, amatuers, and shadetree mechanics...I know there has been many post and discussions about the old band adjustments made to our wonderful tranny's and by now most of us that have done transmission fluid and filter changes have adjusted our own bands. We have all seen the standard spec sheet on 72 in pounds and "backing off" a set number of turns depending on the model we own. However, I do not believe I have seen a discussion on the proper way to "back off" the adjusting screw. So I thought I would start a post asking for opinions on the proper way to do this or the many different techniques that are employed to get it done right. I had to develop my own technique which I am certain can be improved upon because I am basically only "guessing" I really did turn the adjusting screw back 2 7/8 turns for example. I basically make a paint mark on one corner of the screw (that can later be scrapped off" that I use as a reference point. I then pick a spot within the tranny that the reference point would touch if I were to sraw a straight line to it and then proceed to slowly turn the screw with my torque wrench until I figure it hit the 2 turns or 2 7/8 turns depending on which band I am adjusting. There has to be a better way to do this, so please throw me and other viewers some advice and a more true way to get this done. Thanks!!!
Ok my fellow Pros, amatuers, and shadetree mechanics...I know there has been many post and discussions about the old band adjustments made to our wonderful tranny's and by now most of us that have done transmission fluid and filter changes have adjusted our own bands. We have all seen the standard spec sheet on 72 in pounds and "backing off" a set number of turns depending on the model we own. However, I do not believe I have seen a discussion on the proper way to "back off" the adjusting screw. So I thought I would start a post asking for opinions on the proper way to do this or the many different techniques that are employed to get it done right. I had to develop my own technique which I am certain can be improved upon because I am basically only "guessing" I really did turn the adjusting screw back 2 7/8 turns for example. I basically make a paint mark on one corner of the screw (that can later be scrapped off" that I use as a reference point. I then pick a spot within the tranny that the reference point would touch if I were to sraw a straight line to it and then proceed to slowly turn the screw with my torque wrench until I figure it hit the 2 turns or 2 7/8 turns depending on which band I am adjusting. There has to be a better way to do this, so please throw me and other viewers some advice and a more true way to get this done. Thanks!!!
#3
RE: Band Adjustment "Backing Off" TRICKS!!!
I am as well. I adjusted my bands a few months ago and had a devil of a time backing it properly. My transmission doesn't quite shift properly which will lead to a shortened lifespan. I have already lined up my truck for a transmission rebuild, but I still want to know how to adjust my own bands.
#4
RE: Band Adjustment "Backing Off" TRICKS!!!
I think most of us that have adjusted our own bands seem to think it shifted better beforethe adjustment, yet there is a strong consensus that it is a requirement when doing the fluid change. I would be willing to bet that we are doing the adjustment properly, which would make for a huge improvement, except for the fact that we are backing them off improperly. I too can't wait to see who replies and what techniques they employ.
#5
RE: Band Adjustment "Backing Off" TRICKS!!!
a set of 8 point sockets to hold firm the square head
as the hex head is tightened is of great help
an archived post with info
note the bit about Bill Kondolay's opinion
=====
Band adjustments for each model year:
1994
Front Band - tighten to 72 in-lb, back off 2-1/2 turns
Rear Band
32/42RH - Tighten to 72 in-LB, back off 4 turns
36/37/46/47RH - Tighten to 72 in-lb, back off 2 turns
1995
Front Band
42RH - tighten to 72 in-lb, back off 2-1/4 turns
46RH - tighten to 72 in-lb, back off 2-7/8 turns
47RH - tighten to 72 in-lb, back off 1-7/8 turns
Rear Band
42RH - tighten to 72 in-lb, back off 4 turns
46RH - tighten to 72 in-lb, back off 2 turns
47RH - tighten to 72 in-lb, back off 3 turns
1996
Front Band - tighten to 72 in-lb, back off 2-7/8 turns
Rear Band - tighten to 72 in-lb, back off 2 turns
1997 [From: "Paul R. Haller" To: DiRT]
Front Band
46RE - tighten screw to 8N.m or 72 inch pounds, back off 2 7/8 turns
47RE - tighten screw to 8N.m or 72 inch pounds, , back off 1 7/8 turns
Rear band
46RE - tighten screw to 8N.m or 72 inch pounds, back off 2 turns
47RE - tighten screw to 8N.m or 72 inch pounds, back off 3 turns
The adjustment screw inside the case is a square head bolt. You will need a special 1/4 square head socket to fit your torque wrench.
1998 unknown
1999
Front Band
47RE - tighten band adj. screw to 72 inch pounds, back off 1 7/8 turns
42 RE - The final adjustment for the front band has been changed to:
back off 3 turns. (TSB 21-16-98)
Rear Band
47RE - tighten band adj. screw to 72 inch pounds, back off 3 turns
The 47RH rear band requires a 1/4" hex driver, the front band requires a T-30 Torx driver, the filter is held in place by two screws which require a T-20 Torx driver
2000-2001
Front Band
42RE - Tighten to 72 in-lb, back off 3 turns
44RE - Tighten to 72 in-lb, back off 1 7/8 turns
46RE - Tighten to 72 in-lb, back off 2 7/8 turns
47RE - Tighten to 72 in-lb, back off 1 7/8 turns
From Bill Konolday's 47RE notes: I usually go a little looser than factory specs on this front band - backing off the adjustment screw 2 or 2 1/4 turns. Depending on the circumstances I have backed off the band up to 2 1/2 turns.
Rear Band
42RE - tighten band adj. screw to 72 inch pounds, back off 4 turns
44RE - tighten band adj. screw to 72 inch pounds, back off 4 turns
46RE - tighten band adj. screw to 72 inch pounds, back off 2 turns
47RE - tighten band adj. screw to 72 inch pounds, back off 3 turn
94+ Automatic Transmission Bolt and Nut Torque Specs
Front band adjustment locknut - 30 ft-lb
Rear band adjustment locknut - 25 ft-lb
Transmission pan bolts - 13 ft-lb
as the hex head is tightened is of great help
an archived post with info
note the bit about Bill Kondolay's opinion
=====
Band adjustments for each model year:
1994
Front Band - tighten to 72 in-lb, back off 2-1/2 turns
Rear Band
32/42RH - Tighten to 72 in-LB, back off 4 turns
36/37/46/47RH - Tighten to 72 in-lb, back off 2 turns
1995
Front Band
42RH - tighten to 72 in-lb, back off 2-1/4 turns
46RH - tighten to 72 in-lb, back off 2-7/8 turns
47RH - tighten to 72 in-lb, back off 1-7/8 turns
Rear Band
42RH - tighten to 72 in-lb, back off 4 turns
46RH - tighten to 72 in-lb, back off 2 turns
47RH - tighten to 72 in-lb, back off 3 turns
1996
Front Band - tighten to 72 in-lb, back off 2-7/8 turns
Rear Band - tighten to 72 in-lb, back off 2 turns
1997 [From: "Paul R. Haller" To: DiRT]
Front Band
46RE - tighten screw to 8N.m or 72 inch pounds, back off 2 7/8 turns
47RE - tighten screw to 8N.m or 72 inch pounds, , back off 1 7/8 turns
Rear band
46RE - tighten screw to 8N.m or 72 inch pounds, back off 2 turns
47RE - tighten screw to 8N.m or 72 inch pounds, back off 3 turns
The adjustment screw inside the case is a square head bolt. You will need a special 1/4 square head socket to fit your torque wrench.
1998 unknown
1999
Front Band
47RE - tighten band adj. screw to 72 inch pounds, back off 1 7/8 turns
42 RE - The final adjustment for the front band has been changed to:
back off 3 turns. (TSB 21-16-98)
Rear Band
47RE - tighten band adj. screw to 72 inch pounds, back off 3 turns
The 47RH rear band requires a 1/4" hex driver, the front band requires a T-30 Torx driver, the filter is held in place by two screws which require a T-20 Torx driver
2000-2001
Front Band
42RE - Tighten to 72 in-lb, back off 3 turns
44RE - Tighten to 72 in-lb, back off 1 7/8 turns
46RE - Tighten to 72 in-lb, back off 2 7/8 turns
47RE - Tighten to 72 in-lb, back off 1 7/8 turns
From Bill Konolday's 47RE notes: I usually go a little looser than factory specs on this front band - backing off the adjustment screw 2 or 2 1/4 turns. Depending on the circumstances I have backed off the band up to 2 1/2 turns.
Rear Band
42RE - tighten band adj. screw to 72 inch pounds, back off 4 turns
44RE - tighten band adj. screw to 72 inch pounds, back off 4 turns
46RE - tighten band adj. screw to 72 inch pounds, back off 2 turns
47RE - tighten band adj. screw to 72 inch pounds, back off 3 turn
94+ Automatic Transmission Bolt and Nut Torque Specs
Front band adjustment locknut - 30 ft-lb
Rear band adjustment locknut - 25 ft-lb
Transmission pan bolts - 13 ft-lb
#6
RE: Band Adjustment "Backing Off" TRICKS!!!
So for me, I would tighten the bands to 72 in lbs, and then back it off as shown, or back it off and tighten it to 72 in lbs? Then torque the locknut to said specs.
1996
Front Band - tighten to 72 in-lb, back off 2-7/8 turns
Rear Band - tighten to 72 in-lb, back off 2 turns
1996
Front Band - tighten to 72 in-lb, back off 2-7/8 turns
Rear Band - tighten to 72 in-lb, back off 2 turns
#7
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#8
#9
One thing is when you back off the number of turns and or fractions therof, make sure you are NOT using the torque wrench to do so. Use something like a breaker bar that is fixed and does not ratchet. Make an index mark either on the bolt/screw you are turning or the position of the handle in relationship to a fixed point on the trans or other reference area. Count the number of turns and hold the bolt/screw in position and tighten the lock nut to the correct torque. That is the best way I have found to count the turns.
#10