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05-23-2014, 03:41 PM | #1 |
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Join Date: Dec 2013
Location: North Georgia
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Overdrive trans won't engage
I recently swapped my standard 3 speed trans out for an overdrive trans in my '50 Ford. After going through all of the electronics, wiring(harness from Shoebox Central), relay, solenoid and governor, several times to eliminate them the trans still will not go into overdrive. It also will not even freewheel with the cable control pushed in. So I guess my question now is what, internally, would keep the trans from going into overdrive? Any ideas? Thanks
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Gene Last edited by green50; 05-23-2014 at 04:41 PM. |
05-23-2014, 05:11 PM | #2 |
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Re: Overdrive trans won't engage
Their was a thread on here a few days ago with the same problem. Worth a search. Have you got a manual for the overdrive? Free pdf versions are available on this here inner net. Good problem solving stuff in their.
If all the electrics are doing there thing. I think it's trans out time. Just yesterday I had one stripped to its rude bits, all checked out, and back together again. There fairly simple beasts. The handle on the dash, with it disconnected from the lockout lever on the trans. If you shift into reverse, does that lever go floppy? With the trans in neutral, if you operate that lever, does it feel like it's doing anything? This lever moves the sun gear in and out. I think it's possible to put the overdrive together but have the shifting fork NOT in the collar of the sun gear. It's actually fiddely to rassle them into the right order sometimes. Good luck. Martin. |
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05-23-2014, 05:27 PM | #3 |
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Location: San Antonio, Texas
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Re: Overdrive trans won't engage
If it doesn't freewheel then there is likely something wrong with the planetary causing it not to rotate. It could be simple or it could get expensive but parts for them are out there. I'd say it's time to pull it appart and check it all over. Mac VanPelt lists most of the parts for the R-10 that go bad so you may end up contacting him. If you do your own work then look for an overhaul manual specific to your model of vehicle or at least what ever vehicle it came out of originally.
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05-23-2014, 08:58 PM | #4 |
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Join Date: Oct 2013
Location: Glens Falls NY
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Re: Overdrive trans won't engage
Hope this helps .... Here's three manuals for Borg-Warner units. For a 7.9 GB full-size complete manual (too large to attach) google "Instruction Manual The Warner Automatic Overdrive" and download the PDF file.
Most all OD units, especially Ford, copied BW designs. |
05-23-2014, 09:01 PM | #5 |
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Join Date: Oct 2013
Location: Glens Falls NY
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Re: Overdrive trans won't engage
In case you don't have it, here's Ford OD wiring diagram
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05-24-2014, 06:17 AM | #6 |
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Re: Overdrive trans won't engage
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05-24-2014, 06:27 AM | #7 |
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Re: Overdrive trans won't engage
Wrong! It serves as a regular trans when pulled out and freee wheels when the lever is in. If it doesn't free wheel, its time to go into it.
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05-24-2014, 06:29 AM | #8 |
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Re: Overdrive trans won't engage
Nah, cable out locks out the overdrive and turns it into a conventional three speed trans. Freewheel should only happen with the cable in, below the governor cut in speed. This is about 27 mph ish.
Martin. |
05-24-2014, 06:32 AM | #9 |
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Re: Overdrive trans won't engage
Gota speed up my typing.
Martin. |
05-24-2014, 07:57 AM | #10 |
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Re: Overdrive trans won't engage
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05-24-2014, 08:16 AM | #11 |
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Join Date: May 2010
Location: Lehighton Pa
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Re: Overdrive trans won't engage
Bad memory,just drove my 51 last week and I forgot,oh well!,
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05-24-2014, 02:31 PM | #12 |
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Re: Overdrive trans won't engage
Good idea, if I first fit some 4.55:1 gears, then slap the overdrive on the back. Then it'll hustle some. From the lights, out of the bends, get on the information super highway, lift of the gas, man alive shoved it down into overdrive.
Martin. |
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