Just did the tranny flush , replaced filter, and adjusted bands on my 48re. Used the Valvoline ATF+4. It might just be me.... but it seems the tranny heats up a whole lot faster at a stop or running in town now that I serviced it . It was running 160 degrees in town and at stops ..... about 140 degrees on the freeway. Does this sound right ?????

 

Where is your temp probe? Adjusting bands on a properly working trans is stupid IMO. There is only a thin layer of band friction material on those bands and the more you tighten it up and keep wearing it down the sooner you are going to be replacing hard parts. The only time bands should be adjusted is if there is a issue and you check them and they are out of spec.

 

the reasoning for adjusting the band is becuase they strech and that is how you break them is not adjusting them at there service intervals

 

But the more they are adjusted the more they wear. I have NEVER adjusted a trans band on any of mine and have had over 200K on them with no shifting issues. The guy that builds my stuff will only adjust them on a rebuild and if there is an issue....never as regular maintenance.

 

Tell us with your "STUPID IMO" how do you "check" bands for being "out of spec" ?

 

"Out of spec" was the wrong term. If you are having shifting issues and you pull the pan you can see how the strut rod is positioned on the band and if there is more than the normal amount of play then the band is stretched.....The guy that builds my stuff and a couple of others trans guys that I know all swear up and down that you NEVER adjust the bands unless there is an issue. Just like anything else there is different schools of thought and I go by what I am taught. Sorry if you were offended. I'm just very opinionated and I don't get offended so I rub others the wrong way sometimes. So where is the trans temp prob located at?

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Here is some info on trans bands from the guy that spec'd my trans out and has built tons of these:

Q: When should I adjust my bands?
A: Here again it is my professional opinion that this should not be done. If your trans works properly then leave the adjustments alone. There are adjustment bolts on the trans, one external, one in the pan. The one external is second gear, the one in the pan is for reverse and manual low brake. Adjusting the band does not change shift points, or correct slipping. The VB, computer and throttle valve cable (untill 05 anyway, no more cable to adjust) is responsible WHEN a shift is to happen. IF its slipping or has no second or reverse then the band for that gear has worn out, adjustments will only cause further damage. Just like running your brake pads to metal against the rotor, your only grinding metal.

Here is a good discussion as well on the topic from the guy I trust most when it comes to these truck transmissions:

48re - DieselRam.com

 

I'm no pro and don't know much about it but mine seems to stay aroung 150-160+- somewhere around there. The guy who changes my fluid has a 04 cummins and he has played with his truck for a while. He owns the shop and he always adjusts my bands. He said he had rather do it especially if being hard on it. Idk if it's to help buy time until the whole thing finally dies but it holds better after adjusted to me. He's good and cool guy so I'll keep letting him do what he thinks is best.