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Sep 2, 2020 | 06:08 PM

RookieDave

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Only reverse

I’ve been working on a 56 F100 that has a 3 speed manual transmission along with an overdrive. Driven it around my neighborhood a few times, but recently took it out on a couple big streets around where I live. I had to coast back home to my house. Overdrive was in the regular position on the trans, no 1st, 2nd, or 3rd gear, did have reverse. Went out next day and moved the linkage on the overdrive forward to block it out. I was able to drive it around again. I’m wondering if I blew something up in the overdrive unit itself or maybe have something in the wrong position. Anybody have a similar experience? Wondering if I need to pull the trans and get into that OD unit.
Thanks for your feedback

Sep 2, 2020 | 07:56 PM

turnrjr

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From: Western Massachusetts

Suggest you give Mack Van Pelt a call at Van Pelt Sales. (google it) He is a helpful old school transmission guy and will likely know whats going on in your transmission. I purchase parts from him when I rebuilt my mine.

Sep 2, 2020 | 08:33 PM

RookieDave

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Thanks, I’ll give him a try. Haven’t had much luck getting information regarding this problem maybe he’ll have an opinion on this.

Sep 2, 2020 | 08:36 PM

ALBUQ F-1

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From: NM

Quote:

Originally Posted by RookieDave

What do you mean by "the OD was in the regular position"? Not in OD? It sounds like maybe the cable wasn't pulling the lever on the OD quite all the way.

Sep 3, 2020 | 01:18 AM

RookieDave

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Actually when I began working on the truck the overdrive cable was broken or cut down at the transmission. The lever on the OD has always been pointed toward the rear of the truck. After my long test drive it no longer had any forward gears working. I flipped the lever on the overdrive toward the front of the truck which I think would be like pulling the cable on the dash out. What I’ve read is that position blocks out the Overdrive. I kind of think I may have damaged some of the gears in the overdrive. Not sure though.
The solenoid seems to be doing something when I put 12 volts to it. I also jumped the governor wire to ground and that seemed to get the circuit working until the fuse blew on the relay.

Sep 3, 2020 | 10:48 AM

ALBUQ F-1

Fleet Owner

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From: NM

Here is the manual for operation of the OD. Page 6, Section 13, should explain what happened to you. Shifting into Reverse locks the unit into non-OD, temporarily. If the selector lever isn't fully forward, or fully backwards, no forward drive.

https://www.oldwillysforum.com/forum...riveManual.pdf

Sep 3, 2020 | 11:36 PM

RookieDave

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Thanks for the operation manual, I was able to download and print it. I pulled the trans and OD today and hope to get into it in a few days. Still have a feeling that I damaged something inside the OD unit. I’ll keep you posted if interested.

Thanks again