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1977 B200 Transmission leak #728289
September 27th 2017 12:17 pm
September 27th 2017 12:17 pm
Joined: Aug 2017
Posts: 27
Portland OR.
E
Ether Offline OP
newbie
Ether  Offline OP
newbie
E
Joined: Aug 2017
Posts: 27
Portland OR.
Hey guys,

I'm looking to purchase a 1977 B200 318 with an automatic transmission.
One of the more concerning problems with it is that its leaking tranny fluid everywhere.
The owner replaced the pan and gasket assuming this was the source of the leak. Unfortunately it wasn't.
We both agreed that its possible that the solenoid is bad? Does anyone have experience with replacing an old solenoid pack on one of these transmissions? I cant seem to find the part anywhere online. Is this an easy job or should I just take it to a professional (I dont have much transmission experience).

Thanks

Re: 1977 B200 Transmission leak [Re: Ether] #728297
September 27th 2017 4:47 pm
September 27th 2017 4:47 pm
Joined: Aug 2001
Posts: 11,783
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 11,783
Fircrest, WA
Uh, there is no solenoid pack on a 1977 Dodge transmission. The transmission is entirely hydraulically controlled and has no electronic solenoids. The valve body does the job of the solenoid pack, and dropping the valve body is easy but not likely to cure any leaks.

Likely leak points are: dipstick tube o-ring, front main input shaft seal, gear selector shaft seal, rear output shaft seal. neutral start switch seal, speedo cable fitting seal (largely in that order).

I wouldn't hesitate buying the van just because the trans leaks. Get a factory service manual for the van and see that every seal except the input shaft seal can be replaced without any serious disassembly or removal of the transmission. Seals are cheap, too.


Windows- they're what make a van worth owning!
Re: 1977 B200 Transmission leak [Re: Reed] #728302
September 27th 2017 5:36 pm
September 27th 2017 5:36 pm
Joined: Aug 2017
Posts: 27
Portland OR.
E
Ether Offline OP
newbie
Ether  Offline OP
newbie
E
Joined: Aug 2017
Posts: 27
Portland OR.
Reed thank you so much!
As you can see my knowledge of transmissions and especially old transmissions is sub par.

Re: 1977 B200 Transmission leak [Re: Ether] #728304
September 27th 2017 5:51 pm
September 27th 2017 5:51 pm
Joined: Aug 2001
Posts: 11,783
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 11,783
Fircrest, WA
No worries, we all start somewhere.


Windows- they're what make a van worth owning!
Re: 1977 B200 Transmission leak [Re: Reed] #728315
September 28th 2017 10:55 am
September 28th 2017 10:55 am
Joined: Aug 2017
Posts: 27
Portland OR.
E
Ether Offline OP
newbie
Ether  Offline OP
newbie
E
Joined: Aug 2017
Posts: 27
Portland OR.
This would be the correct service manual right?
Also love having digital copies of stuff so if anyone made a pdf of it that would be awesome!

http://www.ebay.com/itm/1977-DODGE-COMPACT-PLYMOUTH-VOYAGER-FACTORY-SERVICE-MANUAL-/122679277939?hash=item1c90413973:g:fOUAAOSw8X5ZgJpS&vxp=mtr

Re: 1977 B200 Transmission leak [Re: Ether] #728321
September 28th 2017 1:41 pm
September 28th 2017 1:41 pm
Joined: Aug 2001
Posts: 11,783
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 11,783
Fircrest, WA
That's the one. I prefer hard copies because it is easier to flop a book open on the radiator support panel than to haul a computer out there. Plus I can read a shop manual in bed at night. Seriously. What do you read to go to sleep?


Windows- they're what make a van worth owning!
Re: 1977 B200 Transmission leak [Re: Ether] #728322
September 28th 2017 1:49 pm
September 28th 2017 1:49 pm
Joined: Aug 2017
Posts: 27
Portland OR.
E
Ether Offline OP
newbie
Ether  Offline OP
newbie
E
Joined: Aug 2017
Posts: 27
Portland OR.
Haha this is some serious bed time reading. Probably knock me out immediately.

Another question. I'm going to have to do some electrical work (blinkers, fuel gauge, stereo etc arnt working). Would I need a specific electrical manual or is the one I posted above comprehensive enough to have all the wiring diagrams?

Re: 1977 B200 Transmission leak [Re: Ether] #728337
September 28th 2017 5:07 pm
September 28th 2017 5:07 pm
Joined: Aug 2001
Posts: 11,783
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 11,783
Fircrest, WA
The factory service manual will have all of the wiring diagrams for your van.


Windows- they're what make a van worth owning!
Re: 1977 B200 Transmission leak [Re: Ether] #728340
September 28th 2017 7:32 pm
September 28th 2017 7:32 pm
Joined: Mar 2016
Posts: 323
Tucson,Az.
H
Hasan Ben Sobar Offline
enthusiast
Hasan Ben Sobar  Offline
enthusiast
H
Joined: Mar 2016
Posts: 323
Tucson,Az.
Any leak on a 727 is simple to fix with the exception of the input shaft seal. Put it up on stands power wash the tranny. then start it up and lay underneath and watch for leaks.

Also replace fusible links with circuit breakers when you get into the electrical issues.


Tucson-it's a dry heat...like an oven
Re: 1977 B200 Transmission leak [Re: Ether] #728406
October 01st 2017 4:21 pm
October 01st 2017 4:21 pm
Joined: Aug 2017
Posts: 27
Portland OR.
E
Ether Offline OP
newbie
Ether  Offline OP
newbie
E
Joined: Aug 2017
Posts: 27
Portland OR.
Alright so while I wait for my service manual to come in the mail maybe y'all can help me diagnose or inform me on what I'm looking at.

Right of the bat it looks like this is my source of leakage.

https://i.imgur.com/UA5wcJx.jpg

What am I looking at here?

Last edited by Ether; October 01st 2017 6:14 pm.
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