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Veteran
Posts: 111
| We just got my great grandmothers 57 Dodge 2 door suburban with the push button torq flite and when we went to bring it to our house via a flat bed tow truck, the car rolled forward in neutral but would not roll backwards in neutral. I was able to disconnect the driveshaft so we could roll it either way and I noticed that the parking brake drum on the trans would only spin one way in neutral. Is this a common problem and if so, what is it so I can fix this issue to get the car road worthy again. Is it some kind of hill holder option that the car needs to be running in order for it to be released or is there some mechanical problem internal of the trans?
Thanks in advance,
Brian |
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Expert 5K+
Posts: 5006
| yank the rear drum off the back of the trans then see if the trans output shaft will turn. can take the actual pads off put drum back on and turn.
Mine would grab in reverse(the actual trans) also, it could be a stuck governor valve... but will normally need a rebuild.
There is no hill locker option.
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Veteran
Posts: 111
| Yeh, I didn’t think there was a hill holder option. Hoping the trans doesn’t need a rebuild as that’s going to be one heavy trans to yank out. |
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Expert
Posts: 4036
 
Location: Connecticut | Have you tried releasing the hand brake ? The shoes in the e-brake housing may be stuck against the drum. Ron |
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Veteran
Posts: 111
| Parking brake is released. It rolls forward but not backwards in neutral. |
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Board Moderator & Exner Expert 10K+
Posts: 13045
Location: Southern Sweden - Sturkö island | That might be the sprag clutch |
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Expert 5K+
Posts: 5006
| these transmissions are fairly east to yank. the 3 bolts up top kinda suck but pretty straight forward.
mark the shift cable with white paint though. it should go back near similar depth.
need to use a little screwdriver to push the clip back on the shift cable.
you need the instructions.. |
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Expert
Posts: 3775
Location: NorCal | wizard - 2021-11-13 1:48 PM
That might be the sprag clutch
That was my first thought but if it rolls forward but not backward it seems like the sprag is doing its job. Maybe a stuck clutch or band from sitting a while.
Was it running when grandma parked it? |
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Veteran
Posts: 111
| My cousin was the last one driving it to and from work back in 1985. Since then he moved to DE and had the car towed down there. He then needed a garage so had it bright back to NJ and had an issue getting it backed into the garage as it wouldn’t free wheel in reverse in neutral back then. I know it’s not the rear as I disconnected the drive shaft and the car rolls forward and back. It’s either something in the parking brake or internal inside the trans. |
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Expert
Posts: 3775
Location: NorCal | Sitting for 35+ years, I'm thinking stuck clutch. You might try applying some clockwise (facing forward) turning force to the brake drum with a long lever to see if it will break loose or maybe reinstall the prop shaft and try towing it backwards. |
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Veteran
Posts: 111
| We tried pushing it backwards and even rocking it back and forth thinking it was something stuck that might spring back in place like a stuck starter gear but no luck. My next step is to pull the parking brake drum and see what’s going on, if anything, with that. |
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Extreme Veteran
Posts: 371
| Raise it up and take off the little inspection cover and see if the cable is getting hung up. This is what happened to mine. |
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Veteran
Posts: 111
| Cable is not hung up. Pulled the drum off it and tried to spin the output shaft again. Still only goes one way. Something is binding up inside the trans. |
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Expert
Posts: 3393
Location: Chestertown, NY ( near Lake George) | It should be easy one way, but much harder the other way, that is caused by the sprag, normal. If you can't turn it, yes something is locked up internally. |
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Veteran
Posts: 111
| So Jim Rawa rebuilt our trans and found that the planetary gears were seized. The whole back half of the trans was cooked. Its been rebuilt and reinstalled now and just trying to get time to get it all back together with the cables and fluid into the trans. He did one hell of a job on the trans ! Can't wait to get the car mobile under its own power again since 1985 ! |
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Expert
Posts: 3393
Location: Chestertown, NY ( near Lake George) | Wow, unusual failure, where did he get the parts, there are no internal hard parts reproduced. |
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Expert 5K+
Posts: 9650
Location: So. Cal | He has a bunch of junk 466 transmissions lying around that he pulls parts out of, from his stash of rebuilding many transmissions over the years. |
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Veteran
Posts: 111
| Yup. He has a ton of trans parts so he was able to fix it and even upgrade it fortunately! |
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57 Dodge Suburban trans issue
