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518 transmission question
#1675230
09/21/14 04:43 PM
09/21/14 04:43 PM
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Joined: Jan 2003
Posts: 7,491
Minnesota
Hemi_Joel
OP
master
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OP
master
Joined: Jan 2003
Posts: 7,491
Minnesota
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my 93 1 ton dodge has a turned up cummins diesel and the automatic overdrive transmission. I had the transmission beefed up and rebuilt 80,000 miles ago, and it has performed flawlessly. The truck is always heavily loaded with a big camper in the bed, and usually towing a trailer, always on out of town trips. I am wondering, after 80,000 miles is there anything that I need to do to maintain this transmission and keep it going reliably? Like band ajustment or something? I do change the fluid and filter very regularly. I do not want anymore breakdowns 1000 miles from home like i had last february when the flexplate broke.
I am rather ignorant when it comes to automatics. Thanks, Joel
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: 518 transmission question
[Re: Hemi_Joel]
#1675231
09/21/14 04:50 PM
09/21/14 04:50 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Since you change the fluid and filter.. just check the band adjustment.. only other thing you might want to check is that the conv bolts are tight 
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Re: 518 transmission question
[Re: Big Squeeze]
#1675233
09/22/14 03:26 PM
09/22/14 03:26 PM
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Joined: Jan 2003
Posts: 25,849
Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,849
Rio Linda, CA
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Even in the mildest service, friction material will wear and the band adjustment will need to be checked/reset periodically.
Pull the pan on a trans with clean red fluid and you'll usually find the powdery residue left from clutch/band wear.
The INTERNET, the MISinformation superhighway
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Re: 518 transmission question
[Re: John_Kunkel]
#1675234
09/22/14 03:32 PM
09/22/14 03:32 PM
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Joined: Jan 2003
Posts: 75,043
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,043
U.S.S.A.
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Quote:
Even in the mildest service, friction material will wear and the band adjustment will need to be checked/reset periodically.
Pull the pan on a trans with clean red fluid and you'll usually find the powdery residue left from clutch/band wear.
The front band is STOPPING a spinning drum , it's going to wear. the rear band is 99.9% of the time grabbing a drum that is not spinning.
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Re: 518 transmission question
[Re: John_Kunkel]
#1675237
09/23/14 03:55 PM
09/23/14 03:55 PM
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Joined: Jan 2003
Posts: 7,491
Minnesota
Hemi_Joel
OP
master
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OP
master
Joined: Jan 2003
Posts: 7,491
Minnesota
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Thanks for all the replies. I don't suppose it will hurt to check it while it is on the hoist.
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: 518 transmission question
[Re: Hemi_Joel]
#1675238
09/23/14 10:19 PM
09/23/14 10:19 PM
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Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
dusturbd340W5
master
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master
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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the lining on a new band is maybe 1/16" thick if you get enough wear that adjusting it makes much difference you have bigger issues.
70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake
best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
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Re: 518 transmission question
[Re: dusturbd340W5]
#1675239
09/23/14 10:53 PM
09/23/14 10:53 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
the lining on a new band is maybe 1/16" thick if you get enough wear that adjusting it makes much difference you have bigger issues.
It might not make a difference but it would be back
in spec... thats a large diameter band and if you do
the 3.1416 X the diameter that can be a turn or so
on the adjuster..
what does it ever hurt to set the band.. hell it even
helps the shift timing
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Re: 518 transmission question
[Re: Hemi_Joel]
#1675240
09/23/14 11:04 PM
09/23/14 11:04 PM
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Joined: Jan 2003
Posts: 16,928
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,928
NC
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Quote:
my 93 1 ton dodge has a turned up cummins diesel and the automatic overdrive transmission. I had the transmission beefed up and rebuilt 80,000 miles ago, and it has performed flawlessly. The truck is always heavily loaded with a big camper in the bed, and usually towing a trailer, always on out of town trips.
With that use, the front band adjustment just makes sense. You are doing a good job with fluid and filter changes, and I assume cleaning the gunk in the bottom of the pan when it is off to change the filter. The trans fluid temperature is important also, but without a temperature gauge, I can't make any guesses.
When I have the pan off, I like to adjust the front band by using a 5/16" allen wrench as a "feeler gauge" between the front servo and the lever. Pull the lever by hand firmly and set the adjustment. It is more consistant than "torque to 72 in-lbs and back off", but can only be done with the pan off.
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Re: 518 transmission question
[Re: Big Squeeze]
#1675245
09/24/14 10:41 AM
09/24/14 10:41 AM
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Joined: Jan 2003
Posts: 75,043
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,043
U.S.S.A.
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Quote:
Quote:
Quote:
Even in the mildest service, friction material will wear and the band adjustment will need to be checked/reset periodically.
Pull the pan on a trans with clean red fluid and you'll usually find the powdery residue left from clutch/band wear.
The front band is STOPPING a spinning drum , it's going to wear. the rear band is 99.9% of the time grabbing a drum that is not spinning.
and peeing in the ocean raises the tide too..... 
It takes a TON of driving for the band to be worn enough to require adjustment...... 
Clutches stop drums from spinning too..........and there's normal wear and tear from them too.........may as well pull the trans and reset clutch clearances every service too....... 
If you say so ... 
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Re: 518 transmission question
[Re: JohnRR]
#1675246
09/24/14 02:26 PM
09/24/14 02:26 PM
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Joined: Jan 2004
Posts: 8,282
fredericksburg,va
cudaman1969
master
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master
Joined: Jan 2004
Posts: 8,282
fredericksburg,va
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My 06 3500 diesel smoked the trans at 40,000 miles, took out band and half the front clutches. Seems it was a pressure problem but it has a 5.0 lever( alot of servo movement not much band movement) and i adjust every 15,000 now, should have switched to a 3.9 also added GM valve on the valve body to help that pressure problem. I would say at 80,000 miles pulling a heavy load get a new trans ready, clutches and band just about used up, like brake pads.
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Re: 518 transmission question
[Re: cudaman1969]
#1675247
09/24/14 10:29 PM
09/24/14 10:29 PM
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Joined: Sep 2003
Posts: 19,456
north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,456
north of coder
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Quote:
My 06 3500 diesel smoked the trans at 40,000 miles, took out band and half the front clutches. Seems it was a pressure problem but it has a 5.0 lever( alot of servo movement not much band movement) and i adjust every 15,000 now, should have switched to a 3.9 also added GM valve on the valve body to help that pressure problem. I would say at 80,000 miles pulling a heavy load get a new trans ready, clutches and band just about used up, like brake pads.
please explain the "gm valve" mod.
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Re: 518 transmission question
[Re: moparx]
#1675248
09/24/14 11:15 PM
09/24/14 11:15 PM
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Joined: Jan 2003
Posts: 12,141
Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,141
Benton, IL.
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We used to buy 2000ish Dodge trucks at the auctions with no second gear. As long as they hadn't driven it so long like that, that 3rd gear was hurt, I would just drop the pan and put the strut plate back in place, adjust the band and go. I have run into a dozen or so like that over the years. Most had right around 100k.
Master, again and still
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Re: 518 transmission question
[Re: DaveRS23]
#1675249
09/25/14 12:51 AM
09/25/14 12:51 AM
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Joined: Dec 2010
Posts: 1,035
Missouri U.S.A.
71yelladustr
super stock
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super stock
Joined: Dec 2010
Posts: 1,035
Missouri U.S.A.
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Seen quite a few also with the band strut popped out. Most of them chip a piece of the cup portion that mates to the adjuster and need replaced. As for the "GM sensor mod", he is talking about replacing the junk factory governor pressure solenoid found in RE type transmissions with a larger less problematic solenoid similar to what is found in GM transmissions.
392 gen III hemi on E-85 727 trans Dana 60
10.02@134
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