| Transmission repair manual [message #61009] |
Wed, 21 October 2009 18:00  |
LYNN L
Messages: 140
Registered: March 2005
Location: Pearland TX.
Karma: 0
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ANYONE KNOW WHERE TO BUY A GOOD REPAIR MANUAL FOR THE TH-425 WITH LOTS OF PICTURES? MY TRANS OR TORQUE CONVERTER SEEMS TO SLIP IN HIGH GEAR UNTIL I THROTTLE BACK TO 2000 RPM AND GET IT PAST 65 MPH. I HAVE A CADDY 500 CU INCH MOTOR AND THE TRANS WAS REBUILT BEFORE I BOUGHT THE COACH. IT HAS ALWAYS HAD A WHINE THAT SOUNDS LIKE A POWER STEERING PUMP THATS LOW ON FLUID WHEN I PUT IT IN ANY GEAR.THE FILTER AND OIL ALONG WITH THE MODULATOR WERE CHANGED BY ME WHEN I BOUGHT THE COACH. THE COOLER I INSTALLED KEEPS IT AT 190 DEGREES AND IT HAS NEVER GIVEN ANY TROUBLE . DO ALL GMC"S SLIP LIKE THIS? I AM GOING TO ATTEND THE NEXT RALLY IN TEXAS AND TRY TO GET A RIDE WITH SOMEONE TO FIND OUT..
Lynn L
76 Eleganza Cad.500
Pearland TX.
[Updated on: Wed, 21 October 2009 18:02] Report message to a moderator |
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| Re: [GMCnet] Transmission repair manual [message #61011 is a reply to message #61009] |
Wed, 21 October 2009 18:05  |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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buy one from Manny
many of the parts you need are no longer made and Manny has them built for
him.
even the paper and rubber kits are no longer available
He has a TC re-builder that he has grown over the years
yup, save yourself a lot of headaches, Manny is our only answer
Manny is a life line and the only one doing this work now, Dunn is gone ,
and Patterson has stopped also, for the same reasons.
gene
On Wed, Oct 21, 2009 at 4:00 PM, LYNN LAYCOCK <lynn_sr@msn.com> wrote:
>
>
> ANYONE KNOW WHERE TO BUY A GOOD REPAIR MANUAL FOR THE TH-425 WITH LOTS OF
> PICTURES? MY TRANS OR TORQUE CONVERTER SEEMS TO SLIP IN HIGH GEAR UNTIL I
> THROTTLE BACK TO 2000 RPM AND GET IT PAST 65 MPH. I HAVE A CADDY 500 CU INCH
> MOTOR AND THE TRANS WAS REBUILT BEFORE I BOUGHT THE COACH. IT HAS ALWAYS HAD
> A WHINE THAT SOUNDS LIKE A POWER STEERING PUMP THATS LOW ON FLUID WHEN I PUT
> IT IN ANY GEAR.THE FILTER AND OIL ALONG WITH THE MODULATOR WERE CHANGED BY
> ME WHEN I BOUGHT THE COACH. THE COOLER I INSTALLED KEEPS IT AT 190 DEGREES
> AND IT HAS NEVER GIVEN ANY TROUBLE . DO ALL GMC"S SLIP LIKE THIS. I AM GOING
> TO ATTEND THE NEXT RALLY IN TEXAS AND TRY TO GET A RIDE WITH SOMEONE TO FIND
> OUT..
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Transmission repair manual [message #61013 is a reply to message #61011] |
Wed, 21 October 2009 18:24 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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Just a quick note, the oil seal that fits on the governor (driver side) may be impossible to buy alone. So, if you pull the governor to repair the gear at the bottom, remove the seal from inside the governor body and place it on the shaft, before re-installing the governor.
If anyone has a source for some, I would like 2. PM me.
Tom PHipps,
75 GMC Ex-Avion
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] Transmission repair manual [message #61168 is a reply to message #61009] |
Thu, 22 October 2009 10:35 |
Gary Casey
Messages: 448
Registered: September 2009
Karma: 0
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Senior Member |
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No, they do not slip like that - most likely it is the "third clutch" slipping because it is either burned or the transmission is low on pressure. Does the transmission also slip in reverse? It uses the same clutch as third. There is really no way the torque converter will slip(more than normal, that is). The noise you describe makes one think it is low on oil or the pump is sucking air, which could result in low oil pressure, especially in third gear. If the filter was replaced, is the O-ring on the inlet tube in good shape? Allowing the clutch to slip for more than a few seconds can destroy the clutch, so don't keep doing it. Is the oil still red and clear or is it amber colored (and smell bad)? If it is amber or brown, cloudy and smelly the transmission is likely toast. You definitely need to find the problem before it is too late and the transmission has to be rebuilt.
Gary
________________________________
From: LYNN LAYCOCK <lynn_sr@msn.com>
To: gmclist@temp.gmcnet.org
Sent: Wed, October 21, 2009 4:00:46 PM
Subject: [GMCnet] Transmission repair manual
ANYONE KNOW WHERE TO BUY A GOOD REPAIR MANUAL FOR THE TH-425 WITH LOTS OF PICTURES? MY TRANS OR TORQUE CONVERTER SEEMS TO SLIP IN HIGH GEAR UNTIL I THROTTLE BACK TO 2000 RPM AND GET IT PAST 65 MPH. I HAVE A CADDY 500 CU INCH MOTOR AND THE TRANS WAS REBUILT BEFORE I BOUGHT THE COACH. IT HAS ALWAYS HAD A WHINE THAT SOUNDS LIKE A POWER STEERING PUMP THATS LOW ON FLUID WHEN I PUT IT IN ANY GEAR.THE FILTER AND OIL ALONG WITH THE MODULATOR WERE CHANGED BY ME WHEN I BOUGHT THE COACH. THE COOLER I INSTALLED KEEPS IT AT 190 DEGREES AND IT HAS NEVER GIVEN ANY TROUBLE . DO ALL GMC"S SLIP LIKE THIS. I AM GOING TO ATTEND THE NEXT RALLY IN TEXAS AND TRY TO GET A RIDE WITH SOMEONE TO FIND OUT..
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List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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