Alright so I went in and dropped the pan, backed off the rear band adjuster 3 full turns, and put the pan back on. by the way, the fluid was completly burned and red sludgy with bits of black band material i think in it. I put the same fluid back in and adjusted the front band according to the task. I then took it for a test drive, the tranny would shift into 2nd but very delayed and weak. After adjusting the front band a few times and testing it out, I decided to do a complete flush of the fluid. That is ultimately what the problem was, cause now it shifts like new. However the piggy bank is getting more attention until I have enough to get a goerend transmission. Obviously I damaged the rear band, hopefully not too much. My lesson I learned on this was to print out the task and have it with you for each and every thing I'm going to do when I take it in for some TLC. Hope this helps someone out there.

 

Thanks DmaxEter! You just cleared up a old question that I've always had regarding torquing. Ya see you can teach an ole dog new tricks.

 

Yep. No adjustment unless there is a problem directly related to the bands.

Again, yep. I have 166,000 miles and the bands have never been touched.

 

I got schooled myself on that topic. I was told it didnt matter how far away the head of the torque wrench was from the fastener as long as it was not off the centerline. When I tried to question this I was quickly taken to the lab and shown how it works. I know I learned a lot that day.

 

Did they sell you a bridge along with that story? If you didn't get a prize for listening to THAT windy you got robbed.


The distance from the head of the TQ wrench to the fastener MAKES a difference in the actual TQ applied to the bolt. There is even a calculation to adjust TQ at the head to apply the correct TQ at the fastener. Length and diameter of the extension plus TQ give an adjustment percentage to compensate for the deflection of the extension.

Note the rise is not symetrical. At 72 in\lbs given a 3" extension the adjustment can be almost nil. At 72 ft\lbs given the same extension the compensation factor will be more.

There is a calculation for vertical extensions and a different one for lateral extensions. An extension to the handle will not change the TQ applied to the fastener but on a clicker type wrench it will change when the click happens due to the leverage point. That adjustment is very hard to calculate because of how the extended pressure is applied to the handle.

 

Trust me, that all sounds good on paper and that was always my thinking as well but when I challenged literally, a rocket scientist in a NASA building at Redstone Arsenal on this very subject he was quick to take me to a lab there and demonstrate this on a very nice setup that god knows how much of our tax dollars went into. I just knew the twist of the extension would cause problems with the final torque. I was so taken back by the whole event that we spent the next three hours investigating this. I finally had to give up after we started putting cheater pipes on torque wrench handles and he proved everything I knew to be true about that all wrong. I leaned a lot that day a and wasted a bunch of tax payers money in the process. It felt good.

Anyway, your 2 or 3 inch extension will not hurt you fastener torque at all, trust me.

 

Go TQ some bolts to 150-180 ft\lbs using different vertical extensions and just the socket then tell me how there is no deflection in it and it doesn't effect TQ. I have proven that too many times to myself to believe otherwise.

Sorry, rocket scientists simply aren't the best source of valid info for the real world and I will trust my own experiences on that front.

Derail over.

 

It wasnt so much the scientist himself as it was the equipment that was credible and impressive. And the conclusion that we arived at was that as long as said extension was capable of handling the torque you wanted to achieve you were good to go with it. Its all good either way, you would have to have a lot more torque than what is in question here to deflect a 3" long extension.

 

Absolutely agree with everything. Inch lbs and an extension will make no measurable difference. An extension that will not deflect under the TQ applied will not make a difference in the final TQ on the fastener.

However, not all extensions are created equal, and, as I explained the amount of TQ is a factor. All I am trying to making clear is at some point if an extension deflects it will change the final outcome.

 

Let me get this straight,,,,if you put a straight 24 inch extension on the torque wrench then the socket and say set it at 100 ft pounds to torque a lug nut, it will click with more or less than 100 ft pounds of torque on the nut? Because there will be some twist in the extension? and that twist will mean less torque on the nut?

 

I have a 2003 HO 3500 Dually with 194K. The trans fluid gets changed every 30K and at 100K my trans shop checked the adjustment on the bands. He said it really didn't need adjusting as it was still within specs but he did fine tune it. I have towed a 14K lb. Fiver over a great portion of the U.S., Canada and pulled a lot of mountains. And this is the first year of the 48RE. I don't fool with the trans maint. I leave it to the guys who make a living at it do the work and if it fails, it is their transmission. Since I'm not a pro I find it best to leave it alone.

Hope all works out with your trans.

 

If the extension will not handle the TQ without deflection, there will be less actual TQ on the fastener than read on the wrench.

 

My tranny made it to 220,000 miles before I had it rebuilt......bands were never touched........rebuilders best friend is an amateur who adjusts his bands.

 

no offense no 6 , but my dad spent 36 years at snap on calibrating torque wrenches, your mistaken the only reason the flex would throw the torque reading off was if you were jerking on the torque wrench which would make your reading erroneous either way.

 

Ask your Dad again about calibration with a vertical extension. Pretty sure if you explain that an extension that cannot handle the TQ that is being applied is going to change his answer. Specifically, an extension that has a 10% deflection at 100 ft\lbs, will the TQ be the same at the head as at the fastener?

Key point here being what TQ will the extension handle and what TQ is being applied. Here is a question for someone thta does calibrations, does the wrench get calibrated at the max setting to validate it works or ???