transmission band adjust

[JRThomas]

Has any body heard that the bands do not need adjustment any more?

I just called the dealer for a transmission drain and flush, and have the bands adjusted. I was told that it is not done any more. I am not having any trouble with the transmission it’s just due.

I just went over 120k miles and I tow about 12k lbs. The bands have never been adjusted.

 

[cerberusiam]

If its never been done check it for a base line.



The OE flex band has effectively no wear area. Its almost either good or bad. Chekcing just tells you if you need to plan for a replacement.

 

[Motorhead]

My personal opinion is to NOT let anyone "Flush" the trans, especially a higher mileage one. I have heard of too many failures after trans flushes. It can dislodge junk and get it stuck in the valve body. If you have been servicing it at regular intervals and the fluid looks good, just drop the pan, change the filter and refill. A tip that I use when servicing an automatic is that I measure the amount of oil I drained out. I then replace that measured amount and top off as needed. This prevents overfilling.

 

[AH64ID]

Trans flushes are only bad if you do the first one with very high miles and there it toasted fluid in the trans. Regular trans flushes are just fine, and do prolong the life of an auto trans.



The service manual states to adjust the bands every 100K on Schedule "A", 30K on Schedule "B", and every 15K for frequest WOT shifting (drag racing).

 

[rscurtis]

My personal opinion is to NOT let anyone "Flush" the trans, especially a higher mileage one. I have heard of too many failures after trans flushes. It can dislodge junk and get it stuck in the valve body. If you have been servicing it at regular intervals and the fluid looks good, just drop the pan, change the filter and refill. A tip that I use when servicing an automatic is that I measure the amount of oil I drained out. I then replace that measured amount and top off as needed. This prevents overfilling.

Excellent idea, I do the same thing myself. Another thing you can do if you have the time is loosen the 10 valve body bolts and let it drain overnight. Re-torque to 100 INCH pounds.

 

[cerberusiam]

Huh??? What the... ...





Blasted forum has gone nuts! Now its auto-merging totally disparate threads!





Weird stuff, man. Totally weird.

 

[Dieselnerd]

A few years ago, I had a transmission rebuilt in Dave Goerends shop. He did it while I watched and explained everything as he did it. One thing he told me was to not adjust the bands after he set them up during the rebuild.



The type of thin band used in the Dodge doesn't wear much and if you keep adjusting it when you change fluid, you may get it too tight. Too loose doesn't really hurt anything but if they are too tight, when it shifts, one band may engage before another releases all the way and it causes extra wear.



If they are too loose you get a "flare" or rpm rise during shifts kind of like it's in neutral for a second and then grabs again.

 

[cerberusiam]

The type of thin band used in the Dodge doesn't wear much



Too loose doesn't really hurt anything

Those two ideas totally opposites and the reason why a lot of these transmissions go TU.



If the band is too loose is wears every time it engages as it slips more than needed. The timing has to be right both ways for the band to function correctly.



What Dave told you was don't constantly adjust it because it should not need it and errors occur. Unfortunately, that doesn't work in real life driving and even Dave acknowledges that.



The OP on the other hand has no idea where the wear is at on the band. It needs a base line.