Cummin-a-long
Big Angry
First and foremost, thanks to Jeff for letting me use and abuse his space with this friggin nightmare transmission that I brought up to put on his dyno.
Second, thanks to Rick for all the help with the damn thing! You da man!
Phil....thanks for rebuilding the TC without the azz rape price.
Kyle......that's a funny MF'r right there!
Let's start this off right. Back in November, a buddy brought his truck in and the trans was toast. When I say toast, I mean FUUUUUUUUBAR! The only thing moving this truck was the grace of god.
Here is what it looked like when I got it.....input shaft hub was mangled, every clutch pack was steel on steel (most of them welded or warped), VB was cracked, etc....
Not only this, but this was a 48RE that was stuffed full of 47RE and RH parts. Planetaries, sun shell, pistons, etc......
So, all new parts were ordered, I rebuilt the trans, had Jeff do a valve body for it, Phil rebuilt the converter and back together the trans went.
Got it on the road and within a mile it lost all forward drive.
Tore it down and the rear clutches were smoked.....WTF!
Checked everthing, changed seals, put new clutches in and put it back in.....same thing.....mile down the road, lost all forward drive.
Pull it in, check the pressures, pressures are good.......back out the trans comes.
This continued about 3 more times.
Finally, we totally rebuild it again, all fresh parts, all new clutches, all new seals, etc.
Before I was putting it back in, I wanted to put it on Jeff's dyno and see if it was good. No problem, dropped it off and went up there today to get it.
We put it on the dyno and as soon as it hits 4th gear....WHAM....locks up tight as a drum. Rick backed it out, went back through 1 - 3 and as soon as it hit 4th gear....WHAM....tight as a drum.
Pulled the OD section off, took it all apart, everything looked fine, compared it with another OD section that just came off the dyno and they were identical.
Put the OD section back on and, again, as soon as it hit 4th gear....WHAM!
Rick pulled the OD section, swapped it with one that was just on the dyno and it worked perfect....no issue at all.
So the two OD's were taken apart, put next to each other and ABSOLUTELY nothing was visually wrong. Rick tore them down to nothing and there wasn't a damn thing wrong.
So both went back together and were standing side by side and after a few minutes, Rick sees it.....the internals of the OD section were sitting a full 1/8" deeper in the case than the one that was working. Not just at the top, the output shaft was sticking out that far as well.
The friggin OD case was so far out of whack that the OD piston couldn't release the clutches and it when it hit 4th gear, it tried to spin the sprag backwards and locked it up tight.
I would have NEVER, EVER found this trying to diagnose it in the truck....NEVER.
Jeff, Rick, Kyle.....I can't thank you guys enough for the time spent and letting me invade your space and pick your brains on this thing. You guys will certainly be getting every referral I have for a trans.
You guys ROCK!
:Cheer:
Second, thanks to Rick for all the help with the damn thing! You da man!
Phil....thanks for rebuilding the TC without the azz rape price.
Kyle......that's a funny MF'r right there!
Let's start this off right. Back in November, a buddy brought his truck in and the trans was toast. When I say toast, I mean FUUUUUUUUBAR! The only thing moving this truck was the grace of god.
Here is what it looked like when I got it.....input shaft hub was mangled, every clutch pack was steel on steel (most of them welded or warped), VB was cracked, etc....
Not only this, but this was a 48RE that was stuffed full of 47RE and RH parts. Planetaries, sun shell, pistons, etc......
So, all new parts were ordered, I rebuilt the trans, had Jeff do a valve body for it, Phil rebuilt the converter and back together the trans went.
Got it on the road and within a mile it lost all forward drive.
Tore it down and the rear clutches were smoked.....WTF!
Checked everthing, changed seals, put new clutches in and put it back in.....same thing.....mile down the road, lost all forward drive.
Pull it in, check the pressures, pressures are good.......back out the trans comes.
This continued about 3 more times.
Finally, we totally rebuild it again, all fresh parts, all new clutches, all new seals, etc.
Before I was putting it back in, I wanted to put it on Jeff's dyno and see if it was good. No problem, dropped it off and went up there today to get it.
We put it on the dyno and as soon as it hits 4th gear....WHAM....locks up tight as a drum. Rick backed it out, went back through 1 - 3 and as soon as it hit 4th gear....WHAM....tight as a drum.
Pulled the OD section off, took it all apart, everything looked fine, compared it with another OD section that just came off the dyno and they were identical.
Put the OD section back on and, again, as soon as it hit 4th gear....WHAM!
Rick pulled the OD section, swapped it with one that was just on the dyno and it worked perfect....no issue at all.
So the two OD's were taken apart, put next to each other and ABSOLUTELY nothing was visually wrong. Rick tore them down to nothing and there wasn't a damn thing wrong.
So both went back together and were standing side by side and after a few minutes, Rick sees it.....the internals of the OD section were sitting a full 1/8" deeper in the case than the one that was working. Not just at the top, the output shaft was sticking out that far as well.
The friggin OD case was so far out of whack that the OD piston couldn't release the clutches and it when it hit 4th gear, it tried to spin the sprag backwards and locked it up tight.
I would have NEVER, EVER found this trying to diagnose it in the truck....NEVER.
Jeff, Rick, Kyle.....I can't thank you guys enough for the time spent and letting me invade your space and pick your brains on this thing. You guys will certainly be getting every referral I have for a trans.
You guys ROCK!
:Cheer:
Last edited:
The TC is awesome, so I'm really looking forward to gettin' the VB right too.
