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Author Topic: 727 Band Adjustment  (Read 4127 times)

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Offline 85 D100 Custom

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727 Band Adjustment
« on: September 6, 2011, 03:34:42 PM »
Hi guys. Getting ready to change the transmission fluid in my truck because the color is not quite red but not brown. I was wondering should I attempt a band adjustment while I have the pan off; at present there are no shifting issues with the transmission only a slight discoloration of the fluid. Your thoughts?
1985 Dodge Ram Custom, ' 73 - 360 ci engine, 600 cfm 4 bbl.Edelbrock carb. Edelbrock dual plane gasket ported intake. 14" Edelbrock open element air filter, MSD pro billet dist.,MSD 6al box, 8.5mm wires, .454" single pattern Comp Cams cam,  long tube headers, 727 tranny, 3.9 posi., Auto meter gauge

Online KThaxton

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Re: 727 Band Adjustment
« Reply #1 on: September 6, 2011, 10:11:16 PM »
Yes, adjusting the bands is a normal, required, maintenance item that should be done at the same time while you're there. Make sure you adjust the front band too, which is on the outside of the trans case.
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Offline kingcrunch

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Re: 727 Band Adjustment
« Reply #2 on: September 7, 2011, 05:07:03 AM »
When you're in there, you should definitely adjust the bands!

Alex

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Offline 85 D100 Custom

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Re: 727 Band Adjustment
« Reply #3 on: September 7, 2011, 09:36:26 AM »
Thanks for your input gentlemen, the this will be my first band adjustment. I've read my Chilton's manual on the procedure, it shows only a small drawing but pitchers are better so its a little vague. Was going through some of the old threads to find information about doing this and some pitchers (pitcher good {cool}), so I know what I'm looking at and what to expect before I begin.
 
Such as, KThaxton you mentioned that the front band adjustment is located on the outside of the transmission case, I'll assume that its on the drivers side so I,ll read up on that as well before I get started. Meanwhile, I'm waiting for the rain to stop and my windshield wiper bushings to arrive at the parts store so this should keep me busy for a minute. And also any links provided for performing this procedure correctly would be appreciated. Thanks again!!!
1985 Dodge Ram Custom, ' 73 - 360 ci engine, 600 cfm 4 bbl.Edelbrock carb. Edelbrock dual plane gasket ported intake. 14" Edelbrock open element air filter, MSD pro billet dist.,MSD 6al box, 8.5mm wires, .454" single pattern Comp Cams cam,  long tube headers, 727 tranny, 3.9 posi., Auto meter gauge

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Re: 727 Band Adjustment
« Reply #4 on: September 7, 2011, 09:43:17 AM »
I'll assume that its on the drivers side


Yes.  ;)
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Offline 85 D100 Custom

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Re: 727 Band Adjustment
« Reply #5 on: September 7, 2011, 09:59:47 AM »
Thanks, this is starting to end up to be more of a vehicle help question than tech discussion. I'll look through the help section to dig up some more info. You've been very help KThaxton and kingcrunch, I thought all I had to do was drain the old fluid and change the filter.
1985 Dodge Ram Custom, ' 73 - 360 ci engine, 600 cfm 4 bbl.Edelbrock carb. Edelbrock dual plane gasket ported intake. 14" Edelbrock open element air filter, MSD pro billet dist.,MSD 6al box, 8.5mm wires, .454" single pattern Comp Cams cam,  long tube headers, 727 tranny, 3.9 posi., Auto meter gauge

Offline mopar65pa

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Re: 727 Band Adjustment
« Reply #6 on: September 7, 2011, 10:08:05 AM »
tighten to 72 inch lbs then back it off 2 turns.  ;) That's what my book says.

here's a pic for you, top right is the low and reverse band. the one on the outside of the case is the kickdown.
« Last Edit: September 7, 2011, 10:10:48 AM by mopar65pa »
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Re: 727 Band Adjustment
« Reply #7 on: September 7, 2011, 10:10:45 AM »
tighten to 72 inch lbs then back it off 2 turns.  ;) That's what my book says.

here's a pic for you, top left is the reverse band. the one on the outside of the case is the kickdown.


The one on the outside however, is likely not going to be two turns, it will probably be 2.5 turns, however they vary by year/vehicle.
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Offline mopar65pa

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Re: 727 Band Adjustment
« Reply #8 on: September 7, 2011, 10:12:16 AM »

The one on the outside however, is likely not going to be two turns, it will probably be 2.5 turns, however they vary by year/vehicle.

I'm just going by what the books I got says.  {noclue}
I'd rather push a DODGE than drive a chevy or a ford!!!!!!
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Offline 85 D100 Custom

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Re: 727 Band Adjustment
« Reply #9 on: September 7, 2011, 11:08:41 AM »
Great information guys thanks, now these adjustments are done  with the trans in the vehicle? Might sound like a stupid question but I've always been told that the stupid question is the one not asked. I'm looking at the tools needed and it looks like I'm about set, now I need the ground to dry up a bit.

KThaxton, Mopar65pa and Kingcrunch thanks a bunch!!!! As stated earlier...Pitchers Good.
« Last Edit: September 8, 2011, 10:33:46 PM by 85 D100 Custom »
1985 Dodge Ram Custom, ' 73 - 360 ci engine, 600 cfm 4 bbl.Edelbrock carb. Edelbrock dual plane gasket ported intake. 14" Edelbrock open element air filter, MSD pro billet dist.,MSD 6al box, 8.5mm wires, .454" single pattern Comp Cams cam,  long tube headers, 727 tranny, 3.9 posi., Auto meter gauge

Offline mopar65pa

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Re: 727 Band Adjustment
« Reply #10 on: September 7, 2011, 11:16:02 AM »
Yes you can do this with the trans in.

You have to drop the pan to for the low/reverse band and you can do the kickdown at anytime since it's on the outside.  ;)
I'd rather push a DODGE than drive a chevy or a ford!!!!!!
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80 318/435 TD
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85 Merc 300TD
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Online KThaxton

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Re: 727 Band Adjustment
« Reply #11 on: September 7, 2011, 11:16:38 AM »
now these adjustments are done  with the trans in the vehicle?

Yep, like I said before, this is a regular maintenance item. I used to do mine twice a year on both my trucks when I drove them more and was more ambitious. Now, I only do it about once a year on my almost-daily driver and maybe every couple of years on my RC.
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Offline 85 D100 Custom

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Re: 727 Band Adjustment
« Reply #12 on: September 7, 2011, 01:05:56 PM »
Once upon a time this was the type thing I would have put the truck in the shop for, too many moving parts in the trans for my experience level so I always left that for the professionals. As my employment situation changed I find myself expanding my skills set lol. Doesn't look to be that involved I just wanted to make sure I didn't screw this up.
1985 Dodge Ram Custom, ' 73 - 360 ci engine, 600 cfm 4 bbl.Edelbrock carb. Edelbrock dual plane gasket ported intake. 14" Edelbrock open element air filter, MSD pro billet dist.,MSD 6al box, 8.5mm wires, .454" single pattern Comp Cams cam,  long tube headers, 727 tranny, 3.9 posi., Auto meter gauge

Offline rb89318

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Re: 727 Band Adjustment
« Reply #13 on: September 8, 2011, 03:50:27 AM »
Once upon a time this was the type thing I would have put the truck in the shop for, too many moving parts in the trans for my experience level so I always left that for the professionals. As my employment situation changed I find myself expanding my skills set lol. Doesn't look to be that involved I just wanted to make sure I didn't screw this up.

Yes lack of money is a good motivator. How I got to start workign on my own vehicles was I couldnt afford to have some else do to for me. Come to think of it, I am still in the same boat. Well that and I dont trust anybody else to work on my vehicles either ;D
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Offline kingcrunch

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Re: 727 Band Adjustment
« Reply #14 on: September 8, 2011, 09:41:54 AM »
When you adjust the bands mind the INCH pound scale.
72inlbs is a tad more than finger tight.

If no inch pound torque "wrench" is available, use a small 5/16" wrench and adjust the bolt with the
hand close to the bolt until it just starts to feel snug, then back off 2 respectively 2.5 turns.

To find out if it's 2 or 2.5 turns to back out you have to drop the pan and take a look at the kickdown lever. It has a number cast into it:
2.8 up tp 3.2 need 2 turns, 3.8 - 4.2 (most likely big block transmission) take 2.5 turns.


When you tighten the lock nut, holt the adjustment bolt steady with the 5/16" wrench, it shall not be turned after adjustment!


Next thing to mind when reattaching the pan is to let the sealant cure for like 30mins to 1 hour before you fill up the transmission, gives you less problems with the cork gasket.


There is a reusable steel core gasket that uses a special o-ring available from Mopar if you do not want to mess with cork gaskets and sealant.


Alex

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Offline 85 D100 Custom

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Re: 727 Band Adjustment
« Reply #15 on: September 8, 2011, 09:29:19 PM »
 Thanks Alex, I do have an inch/pound torque wrench. So basically I should wait until I have the pan removed look at the kickdown lever to determine how many turns to back the adjusting bolt out; ( I have a 360 ci engine) after tightening the adjusting bolt to 72 in./lbs. I then immobilize the bolt with a 5/16 (socket) wrench while I tighten the locking nut which should be done with a open end wrench, correct? Also how many in./lbs. to torque the lock nut?
 
 Would brake cleaner be good for cleaning the inside of the pan prior to re-installation or what would be the best type of cleaner to use which would not react adversely with transmission fluid?

 Just found the answer to the torque question... 1). A-727: 73-88 V8=  torque to 72 in./lbs then back out 2 1/2 turns for adjustment bolt and 30 ft./lbs. for the lock nut. 2). tighten adjustment bolt to 72 in./lbs and back out 2 turns for the low/reverse band and 30 ft./lbs. for its lock nut. 3). Pan bolts torque  = 150 in./lbs.

Thanks again everyone, David  
« Last Edit: September 8, 2011, 10:26:43 PM by 85 D100 Custom »
1985 Dodge Ram Custom, ' 73 - 360 ci engine, 600 cfm 4 bbl.Edelbrock carb. Edelbrock dual plane gasket ported intake. 14" Edelbrock open element air filter, MSD pro billet dist.,MSD 6al box, 8.5mm wires, .454" single pattern Comp Cams cam,  long tube headers, 727 tranny, 3.9 posi., Auto meter gauge

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Re: 727 Band Adjustment
« Reply #16 on: September 9, 2011, 09:32:49 AM »
That info sounds correct.

As for cleaning the pan, brake cleaner works great and as long as it evaporates (which it certainly will by the time you mount the pan up).

Just an FYI, not that this should be an issue with what you are doing....never let brake cleaner come into contact with plastic parts, it can ruin them. I found out the hard way...even after I read a warning about it.  :-[
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Offline 85 D100 Custom

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Re: 727 Band Adjustment
« Reply #17 on: September 9, 2011, 09:28:44 PM »
Thanks for the heads up {cool}
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Offline kingcrunch

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Re: 727 Band Adjustment
« Reply #18 on: September 12, 2011, 01:54:10 AM »
Brake cleaner works fine for me, even on plastic parts.
I use the Liqui Moly brand, maybe there's more agressive cleaners available in the U.S. ???

If you have to wipe something clean, always use a towel or shop papers that do not loose fuzzies!


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Re: 727 Band Adjustment
« Reply #19 on: September 12, 2011, 09:26:03 AM »
There are basically two types of brake cleaners available, chlorinated and non-chlorinated.

This is where I first heard of this:
http://dodgeram.info/tsb/1994/08-11-94.htm

Even after reading this, I ruining my trans case connector from using brake cleane to clean around my band adjuster.  :'(

According to Mopar, it is the NON-chlorinated that is the issue, as the TSB says to use the cleaner containing 111 Trichlorothane (the "chlorinated" component), however, I've found on other boards guys saying the opposite. I suspect the Mopar TSB is accurate.

With that said, I'm betting the chlorinated version is not available in the EU.
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Offline kingcrunch

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Re: 727 Band Adjustment
« Reply #20 on: September 14, 2011, 09:16:13 AM »
The liqui moly brake cleaner is non-chlorinated and does not contain acetone too.
The manufacturer warns of possible damage on paint or plastic parts but i never had any issue with using it. I'm using it for paint prep on every part i clean before painting.

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Re: 727 Band Adjustment
« Reply #21 on: September 14, 2011, 10:15:31 AM »
The manufacturer warns of possible damage on paint or plastic parts but i never had any issue with using it. I'm using it for paint prep on every part i clean before painting.


Just be careful, I think occasional contact is fine but prolonged contact is when it gets bad. I found out the hard way. When I sprayed my trans to clean the area around the band adjuster, the brake cleaner flowed down the trans and pooled around the plastic "case connector".

It revealed itself after going through a carwash. As I pulled out, my trans temp light came on, and it wouldn't shift out of first or second (don't remember). Later when I started investigating, I found that the connector had crumbled to pieces. When I went through the carwash, it shorted all the connectors so the computer thought the trans was overheating among other things.

I then face palmed myself when I remembered that I recently sprayed brake cleaner on the trans even though I read that Dodge TSB.   :-[
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Offline 85 D100 Custom

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Re: 727 Band Adjustment
« Reply #22 on: September 14, 2011, 03:46:31 PM »
Okay, I will use it once the pan has been removed and will allow the pan to dry before I put the gasket and  everything back together. ;)
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Offline minnesota guy

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Re: 727 Band Adjustment
« Reply #23 on: October 11, 2011, 10:03:52 AM »
Once you test the tranny after adjusting the bands, if the vehicle wants to move forward when in neutral when giving it gas, the band may be a little too tight.

If you install a cork gasket on the tranny, I discovered that tacky sealant in a little plastic bottle works good at holding the gasketand for sealing purposes in moderation.  I wouldn't use any silicone sealer.  After a year of use, with the cheapy cork gasket, I have 0 leaks! 

I have used that mopar reusable gasket and if the vehicle sits, it gets weepege and seepege..for some reason..But that is with the Mopar deep pan.
Just make sure everything is clean enough to literally eat off it when putting it back together.

 

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