Go Back   DodgeForum.com > Dodge Trucks > Dodge Ram > 2nd Gen Ram Tech
Sign in using an external account
Register Forgot Password?


2nd Gen Ram Tech 1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.

why adjust transmission bands?

Reply
 
 
 
 
Thread Tools Search this Thread
  #1  
Old 03-31-2009, 04:17 PM
oops-sorry oops-sorry is offline
Registered User
 
Join Date: Mar 2009
Vehicle: 1987 dakota 4x4
Location: indiana
Posts: 18
Default why adjust transmission bands?

what is the purpose of adjusting the bands? can you adjust the front and not adjust the rear? or do you need to do them both at the same time? im new to dodge rams, but im familiar with the engines. i just got rid of my jeep grand cherokee that had the 318 engine in it if i remember right, the jeep guys kept saying the same thing about adjusting the bands.

the reason im asking is because my transmission shifts fine, but it is really smooth and quick to shift. i tried adjusting the tv cable and that didnt help at all. i know in the jeep i had the transmission was a 46rh also and it shifted really firm.

by the way im working on a 1994 ram 4x4 with a 360 engine. thanks for the input
This ad is not displayed to registered and logged-in members.
Register your free account today and become a member on Dodge Forums!
Reply With Quote
  #2  
Old 03-31-2009, 07:14 PM
zman17's Avatar
zman17 zman17 is offline
Registered User
Dodge Forum Moderator
 
Join Date: May 2008
Vehicle: 2000 2500HD 4x4 5.9
Location: NH
Posts: 18,729
Default

You adjust them because they get worn. You don't have to do both, btw.
__________________
2000 2500HD 4X4 5.9 and 4:10's,HF tuned SCT,Red-Head gear box, HS 1.7's,
50mm Fastman TB, Hughes Plate,2" Hell Bent ,Volant CAI
Flowmaster 50 series, Rock Solid Ram Steering fix,B&M trans cooler,fuzzy dice good for 5HP
Reply With Quote
  #3  
Old 03-31-2009, 07:18 PM
oops-sorry oops-sorry is offline
Registered User
 
Join Date: Mar 2009
Vehicle: 1987 dakota 4x4
Location: indiana
Posts: 18
Default

when they get worn, what do they do? smooth shifts, slipping, or something else? what is the difference between adjusting the front and the rear?
Reply With Quote
  #4  
Old 03-31-2009, 08:41 PM
PurplDodge's Avatar
PurplDodge PurplDodge is offline
Legend
 
Join Date: Jan 2008
Vehicle: 2005 Silverado LT 4x4 Crew Cab 5.3
Location: Indiana
Posts: 8,319
@nate_kent
Default

Wait a week. I will have a DIY on both.
__________________
Reply With Quote
  #5  
Old 03-31-2009, 08:45 PM
oops-sorry oops-sorry is offline
Registered User
 
Join Date: Mar 2009
Vehicle: 1987 dakota 4x4
Location: indiana
Posts: 18
Default

thanks, ill be looking forward to it
Reply With Quote
  #6  
Old 03-31-2009, 08:46 PM
PurplDodge's Avatar
PurplDodge PurplDodge is offline
Legend
 
Join Date: Jan 2008
Vehicle: 2005 Silverado LT 4x4 Crew Cab 5.3
Location: Indiana
Posts: 8,319
@nate_kent
Default

So will I.
__________________
Reply With Quote
  #7  
Old 05-30-2009, 11:19 AM
SEAL SEAL is offline
Champion
 
Join Date: Mar 2009
Vehicle: 1989 W150 318 TBI 727
Location: Bent Mountain Va
Posts: 2,640
Default

Oops-sorry
Smooth shifts are what an automatic is supposed to do but doesn't always achieve. To quote an old mechanic friend of mine: If it ain't broke don't fix it.
To answer your question though. If the bands are too loose they will slip, if they are too tight the will destroy themselves. That is why this adjustment needs to be done properly.
Preventive maintenance such as adjusting bands should not be needed unless: 1. the vehicle sees rough service such as snow plowing or heavy load hauling on a regular basis, 2. extremely high milage, 3. actual slippage or other erratic shifting problems.
Most Chrysler trannys that have bands and not clutch packs use one band for reverse and low, and another for the front (kickdown / upshift). If you experience slippage I would recommend adjusting both bands as this is not rocket science, but the problem will almost always be in the low reverse band.
Here is an explanation of the clunk many of us feel when we shift into reverse. It is a little technical but I found it interesting.
There is a definite reason for the famous "Clunk" when the rear wheel drive vehicles are put into Reverse. It is designed in. When put into Reverse, an entire different hydraulic circuitry is used and the line pressure will flow to a different part of the Regulator Valve which causes the line pressure to rise. This line pressure is directed to the Low / Reverse Servo and the Front Clutch. The need for higher pressures is due to the design features of each clutch assembly. Both clutches are applied by hydraulic force and the Rear clutch utilizes a Bellville Spring, which multiplies this force. This multiplied, higher force pushes against eight mechanical levers to assure a firm application of the band without slippage. Rear Clutch pressure here can rise to 270 psi - they deem necessary to prevent slippage. The other, forward circuit design does not have this pressure range to control those shift points. The front cluch, in this circuit does not require this higher pressure because it is used only in the upshift to Drive, and since the car is already under way, there is no likelihood that there will be any slippage here. Chrysler tried to reduce this shock somewhat, but they didn't want to revise the whole thing. If you look at a cross section of the Low / Reverse Servo, you'll see the spring cushoning the piston travel as it applies the band; This lever has the Low / Reverse Band adjustment on its' end. If you loosen the adjustment to reduce the shock, the shock will become more harsh, this adjustment is not recommended. There is one aid a Chrysler dealer recommended to me, he said that they modified the circuit flow rate by adding a small Cotter Pin into the hole for this circuit in the valve body. What this did was to delay the pressure build-up , not eliminate it, but build it up slowly, and they had many happy owners with no more complaints.
I hope this helps.
Reply With Quote
  #8  
Old 05-30-2009, 12:38 PM
oops-sorry oops-sorry is offline
Registered User
 
Join Date: Mar 2009
Vehicle: 1987 dakota 4x4
Location: indiana
Posts: 18
Default

thanks for the reply, that is exactly the information i was trying to find out. my truck has 250,000 miles on it, but it doesnt slip shift or cause me any problems. so i will just leave it alone. thanks again
Reply With Quote
  #9  
Old 05-30-2009, 12:46 PM
Laramie1997's Avatar
Laramie1997 Laramie1997 is offline
Grand Champion
 
Join Date: Sep 2008
Vehicle: 2013 Charger R/T Road & Track
Location: Springfield MO
Posts: 6,998
garton1940
Default

Personally, I say leave the bands alone. I have seen many people on here get under there and play with them, and then the tranny will fail about a week after that. If you were slipping or something like that, I still say leave it the hell alone. I have seen these trucks go for another 15-20K miles on a tranny that is starting to slip. Compare that to the people that crawl under there and do an adjustment and then they end up getting their tranny rebuilt less than a 1000 miles later....
Just a thought.
__________________
Call it an early midlife crisis.
Reply With Quote
  #10  
Old 05-30-2009, 01:28 PM
zman17's Avatar
zman17 zman17 is offline
Registered User
Dodge Forum Moderator
 
Join Date: May 2008
Vehicle: 2000 2500HD 4x4 5.9
Location: NH
Posts: 18,729
Default

+1, I adjust them every time I do a fluid/filter change, but I have the right tools .
__________________
2000 2500HD 4X4 5.9 and 4:10's,HF tuned SCT,Red-Head gear box, HS 1.7's,
50mm Fastman TB, Hughes Plate,2" Hell Bent ,Volant CAI
Flowmaster 50 series, Rock Solid Ram Steering fix,B&M trans cooler,fuzzy dice good for 5HP
Reply With Quote
  #11  
Old 05-30-2009, 01:42 PM
SEAL SEAL is offline
Champion
 
Join Date: Mar 2009
Vehicle: 1989 W150 318 TBI 727
Location: Bent Mountain Va
Posts: 2,640
Default

If the tranny starts to slip fix it or have it fixed if you are not comfy doing it yourself. Adjusting bands is not as expensive as the tow truck you will need when the tranny lets you sit in the middle of nowhere when you can least afford to be without your truck. Not to mention the expense of the rebuild. If they adjust them when they change the fluid and filter the added expense should be no more than 25-35 dollars.
I adjust my bands every 2 years. That for me is every other fluid change but my truck plows snow, hauls heavy loads regularly, and has high mileage. Adjusting bands takes me an extra 10-15 minutes and I am sure has saved me at least one rebuild with the abuse my truck gets.
If you find a small reputable shop and express an interest in learning I know a lot of guys that will let you watch how it is done. It really is not hard but it must be done right.
Reply With Quote
  #12  
Old 05-30-2009, 06:56 PM
aim4squirrels's Avatar
aim4squirrels aim4squirrels is offline
Legend
 
Join Date: Jul 2007
Vehicle: 2008 Dodge Challenger SRT8
Location: DFW, Texas
Posts: 7,844
Default

Hey Purpl,

Where's that DIY on adjusting Tranny Bands?
__________________
Reply With Quote
  #13  
Old 05-30-2009, 10:30 PM
lastrights's Avatar
lastrights lastrights is offline
Grand Champion
 
Join Date: Sep 2007
Location: the burgh
Posts: 5,843
dfdgfdvgfvf
Default

just change your fluid and maintanance
__________________

durango 117k 5.9 has fi airgap,1.7hs,52mmfastman,14x3 and sct tuned!
Reply With Quote
  #14  
Old 05-31-2009, 08:14 PM
PurplDodge's Avatar
PurplDodge PurplDodge is offline
Legend
 
Join Date: Jan 2008
Vehicle: 2005 Silverado LT 4x4 Crew Cab 5.3
Location: Indiana
Posts: 8,319
@nate_kent
Default

Quote:
Originally Posted by aim4squirrels View Post
Hey Purpl,

Where's that DIY on adjusting Tranny Bands?
Just wait a week. I really want a PATC.
__________________
Reply With Quote
  #15  
Old 05-31-2009, 09:08 PM
Laramie1997's Avatar
Laramie1997 Laramie1997 is offline
Grand Champion
 
Join Date: Sep 2008
Vehicle: 2013 Charger R/T Road & Track
Location: Springfield MO
Posts: 6,998
garton1940
Default

Quote:
Originally Posted by PurplDodge View Post
Just wait a week. I really want a PATC.
Me thinks I will avoid that DIY like the plague...... I saw your thread on band adjustment..... and about 2 weeks later heard you got a rebuild.....
__________________
Call it an early midlife crisis.
Reply With Quote
  #16  
Old 05-31-2009, 09:16 PM
PurplDodge's Avatar
PurplDodge PurplDodge is offline
Legend
 
Join Date: Jan 2008
Vehicle: 2005 Silverado LT 4x4 Crew Cab 5.3
Location: Indiana
Posts: 8,319
@nate_kent
Default

No, as soon as I pulled it out of the garage I had problems. I have always thought of doing a Tranny fluid DIY cause I have the pics.
__________________
Reply With Quote
  #17  
Old 05-31-2009, 09:17 PM
Laramie1997's Avatar
Laramie1997 Laramie1997 is offline
Grand Champion
 
Join Date: Sep 2008
Vehicle: 2013 Charger R/T Road & Track
Location: Springfield MO
Posts: 6,998
garton1940
Default

Quote:
Originally Posted by PurplDodge View Post
No, as soon as I pulled it out of the garage I had problems. I have always thought of doing a Tranny fluid DIY cause I have the pics.
Do I need to add aim's quote back to my sig to remind you????
__________________
Call it an early midlife crisis.
Reply With Quote
  #18  
Old 05-31-2009, 09:19 PM
PurplDodge's Avatar
PurplDodge PurplDodge is offline
Legend
 
Join Date: Jan 2008
Vehicle: 2005 Silverado LT 4x4 Crew Cab 5.3
Location: Indiana
Posts: 8,319
@nate_kent
Default

I molested those ****ers.
__________________
Reply With Quote
  #19  
Old 06-01-2009, 09:19 AM
Gary-L's Avatar
Gary-L Gary-L is offline
Legend
 
Join Date: May 2005
Vehicle: 2007 Ram 1500 4x2 Big Horn aka The Silver Bullet
Location: Norman, Okla-mobile-homa
Posts: 8,031
Default

Quote:
Originally Posted by SEAL View Post
If the tranny starts to slip fix it or have it fixed if you are not comfy doing it yourself. Adjusting bands is not as expensive as the tow truck you will need when the tranny lets you sit in the middle of nowhere when you can least afford to be without your truck. Not to mention the expense of the rebuild. If they adjust them when they change the fluid and filter the added expense should be no more than 25-35 dollars.
I adjust my bands every 2 years. That for me is every other fluid change but my truck plows snow, hauls heavy loads regularly, and has high mileage. Adjusting bands takes me an extra 10-15 minutes and I am sure has saved me at least one rebuild with the abuse my truck gets.
If you find a small reputable shop and express an interest in learning I know a lot of guys that will let you watch how it is done. It really is not hard but it must be done right.
Pardon my French, but could you eliminate the air of mystery and please outline the procedure? That would be more beneficial than alluding to how it should be done, advising vague caution, etc.
__________________
You can have my Oxford comma when you pry it from my cold, dead, and lifeless hands.
Reply With Quote
  #20  
Old 06-01-2009, 11:10 AM
Wiretender's Avatar
Wiretender Wiretender is offline
Registered User
 
Join Date: May 2008
Vehicle: 1999 Van 2500, 5.2L, RE46
Location: Bend, OR
Posts: 6
Default following directions effectively......

When in doubt perform maintainence procedures as outined by the engineers of this rig at intervals stated. Adjusting bands are neither difficult or complicated. I have found the transmission t/b more precise and responsive following adjustment with no adverse affects.
Reply With Quote
Old 06-01-2009, 11:10 AM
 
 
 
Reply




Tags
1996, adjust, adjusting, bands, cable, check, cherokee, dodge, durango, grand, intrepid, price, ram, ramcharger, tighten, transmission, tv

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Join DodgeForum
Advertising

Featured Sponsors
Vendor Directory
Our Sponsors
All times are GMT -4. The time now is 02:55 AM.

Internet Brands, Inc.


Contact Details & Emails