Attention: TDR Forum Junkies My 98 12 Valve was due for transmission fluid/filter and band adjustment. I purchased the truck about 5 years ago. It had been serviced regularly by the previous owner/dealer. The transmission was installed by the dealer from his stock in 2011. This transmission has about 60K on it. Truck is pushing 300K.
Today, I changed fluid/filter in the pan and adjusted the rear band. There were no issues prior to changing fluid/filter and adjusting the rear band. I did not touch the other band. I just did a 5-hour drive in this truck two days ago. Shifted well, always has.
To adjust the band, I loosened the locknut several turns, screwed in the adjuster and torqued to 72 in-lbs. Backed off the adjuster 3 turns. tightened the locknut while holding the adjuster by hand. Then tightened the locknut with a socket. I did not hold the adjuster during the final locknut tightening, from finger tight to tight. However, I don't think I rotated the adjuster much during the torquing of the locknut. Maybe I did? The rear band adjusting lever was fairly "sloppy" before the adjustment but seemed snug afterward.
I put everything back together and filled it with ATF +4. Took it for a test drive. There's a problem.
If I first start the truck, put it in drive or reverse, it goes right in gear once or twice. However, subsequently moving it to reverse, or drive, it can take up to 4 seconds to go into gear. This is not the way it's always behaved, and something isn't right. Driving on my street, there's a good bit of slippage at times while in drive. I did feel one hard shift to second. Stopping, putting it in reverse, it takes several seconds to engage. Same time delay when I go back into drive. If I shut it off and let the truck sit for 15 minutes, then start it up and put it in D, or R, it goes right in gear once or twice. Thereafter it starts to delay when I put it in D or R. I tried this 3 times - same thing each time. Fluid has been checked while idling in neutral. It's at the top of the band. Checked again after the problems showed. Still at top of band. I didn't run it long enough to get it hot.
If you made it this far, I appreciate your patience. Did I over tighten the band? Are the symptoms it's exhibiting consistent with over tightening, or did I unknowingly mess something else up while I was in there? I fiddled with nothing else! Yes, I know how to use a torque wrench. I'm not a mechanic in real life, but I was one on a submarine when I was a young man. We used torque wrenches all the time. Yes, I used an in-lb wrench.
Before I drain, readjust, and try again, I thought I'd ask you folks for some help. Clearly, I've not got something right. I'd appreciate some thoughtful help, please.
Today, I changed fluid/filter in the pan and adjusted the rear band. There were no issues prior to changing fluid/filter and adjusting the rear band. I did not touch the other band. I just did a 5-hour drive in this truck two days ago. Shifted well, always has.
To adjust the band, I loosened the locknut several turns, screwed in the adjuster and torqued to 72 in-lbs. Backed off the adjuster 3 turns. tightened the locknut while holding the adjuster by hand. Then tightened the locknut with a socket. I did not hold the adjuster during the final locknut tightening, from finger tight to tight. However, I don't think I rotated the adjuster much during the torquing of the locknut. Maybe I did? The rear band adjusting lever was fairly "sloppy" before the adjustment but seemed snug afterward.
I put everything back together and filled it with ATF +4. Took it for a test drive. There's a problem.
If I first start the truck, put it in drive or reverse, it goes right in gear once or twice. However, subsequently moving it to reverse, or drive, it can take up to 4 seconds to go into gear. This is not the way it's always behaved, and something isn't right. Driving on my street, there's a good bit of slippage at times while in drive. I did feel one hard shift to second. Stopping, putting it in reverse, it takes several seconds to engage. Same time delay when I go back into drive. If I shut it off and let the truck sit for 15 minutes, then start it up and put it in D, or R, it goes right in gear once or twice. Thereafter it starts to delay when I put it in D or R. I tried this 3 times - same thing each time. Fluid has been checked while idling in neutral. It's at the top of the band. Checked again after the problems showed. Still at top of band. I didn't run it long enough to get it hot.
If you made it this far, I appreciate your patience. Did I over tighten the band? Are the symptoms it's exhibiting consistent with over tightening, or did I unknowingly mess something else up while I was in there? I fiddled with nothing else! Yes, I know how to use a torque wrench. I'm not a mechanic in real life, but I was one on a submarine when I was a young man. We used torque wrenches all the time. Yes, I used an in-lb wrench.
Before I drain, readjust, and try again, I thought I'd ask you folks for some help. Clearly, I've not got something right. I'd appreciate some thoughtful help, please.
