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Removing tranny

Ok I got so much help and tried all of it to no avail....... Now I have to replace my trans. Stuck on the trans break drive line removal? Do I drop the drive line first? Or remove trans brake first…Continue

Tags: 78, Sportscoach, my, from, the

Started May 18, 2018

78 sportscoach transmission help
14 Replies

i just bought a 1978 Chevy sportscoach  i drove it 75 miles to the RV park parked two days and the trans wouldnt engage. put fluid in and drove 26 more miles and parked tried to drive again and no…Continue

Tags: gears, drive, no

Started this discussion. Last reply by Mara May 19, 2018.

 

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Mara and Daniel Long are now friends
May 20, 2018
Mara left a comment for Jack Wasmuth
"Jack hour from my town! We just moved here 6 months ago. I did try the dot3 trick. Still no go. Let it run 30 mins she's old like me needs some time to get all the joints moving....... We already have out the old trans just working our way…"
May 20, 2018
Mara replied to Mara's discussion 78 sportscoach transmission help
"Yes please send everything."
May 19, 2018
Mara replied to Mara's discussion 78 sportscoach transmission help
"Oh thank you Daniel. I was hoping you'd be the one to reply. Yes yes please send every thing you can my way. My email is saymar1972@gmail.com that would be easier to receive an attachment then thru the forums and blogs. They have me all…"
May 19, 2018
Daniel Long replied to Mara's discussion 78 sportscoach transmission help
"Sorry to hear you're having so much trouble with the transmission. I have the Chevy P30 with the TH400 transmission and could send you the pages from the manual I have regarding removal/ install. I've done it twice on the Dodge and too…"
May 19, 2018
Mara replied to Mara's discussion 78 sportscoach transmission help
"Hello some one...... I have tried all the suggestion. Down to pulling the valve body and cleaning every thing I could. To NO solution. I have resolved to replacement. Now how do I get the trans brake/drive line assembly out or pulled to get the old…"
May 19, 2018
Mara posted a discussion

Removing tranny

Ok I got so much help and tried all of it to no avail....... Now I have to replace my trans. Stuck on the trans break drive line removal? Do I drop the drive line first? Or remove trans brake first then drive line?See More
May 18, 2018
Rich Thomas replied to Mara's discussion 78 sportscoach transmission help
"My 78 Travelcraft ( a class "C" Chevy cutaway van with the 350 SBC) has a Turbo Hydromattic 400 - 3 speed transmission. I would guess yours will have the same. You can Google Chevy turbo 400 and find a picture guide of the oil pans on…"
May 6, 2018
Jack Wasmuth left a comment for Mara
"Mara, unless you had a BIG leak it will not hurt to try the brake fluid trick. Brake fluid will NOT hurt your transmission. It is a quick fix for a small problem. If the brake fluid trick works then you need what is called a small prtsa kit along…"
May 5, 2018
richard nance replied to Mara's discussion 78 sportscoach transmission help
"she says it works when she puts fluid in it.it sounds like the fluid keeps leaking out.i wouldn't put brake fluid in it.id buy transmission stop leak at the auto parts store.if the governer was bad she wouldn't have first gear either.id…"
May 5, 2018
Mara replied to Mara's discussion 78 sportscoach transmission help
"how do i do that pour it in and start it how long do I wait?"
May 4, 2018
Mara replied to Mara's discussion 78 sportscoach transmission help
"Thank You"
May 4, 2018
Daniel Long replied to Mara's discussion 78 sportscoach transmission help
"So Sorry Mara! I read "Sportscoach" and assumed it to be a Dodge! With the Chevy 454 engine you likely have a TH400 3 speed transmission. I'd need to know what you mean by " the trans wouldnt engage". For this type of…"
May 4, 2018
Jack Wasmuth replied to Mara's discussion 78 sportscoach transmission help
"Start it up and put it in gear and then in reverse and then park and then drive. It may take a short time for it to circulate. Drive it at least 20-25 miles stop and go and higher speed to get it mixed and circulated good. You can repeat this if…"
May 4, 2018
Jack Wasmuth replied to Mara's discussion 78 sportscoach transmission help
"Daniel she has a chevy."
May 4, 2018
Mara replied to Mara's discussion 78 sportscoach transmission help
"yes thank you..... I did a vin check and it is a the 454 Chevy as per the vin decode. i will try the DOT 3. how long do i wait or do i just start it and try."
May 4, 2018

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At 8:26am on May 5, 2018, Jack Wasmuth said…

Mara, unless you had a BIG leak it will not hurt to try the brake fluid trick. Brake fluid will NOT hurt your transmission. It is a quick fix for a small problem. If the brake fluid trick works then you need what is called a small prtsa kit along with a filter and fluid change.

You problem sounds like what is known as "Morning Sickness". Until the fluid gets hot and the seals swell it won't move.

I have been doing this trick for over 30 years. BUT it is worth a try.

 
 
 

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