I have a 1967 F100 which according to the VIN plate should have a Cruise-o-matic tranny. I tried to verify this by finding a name plate. I foud RF-C5AP-7976-A stamped into the upper right side of the Bell housing . Can someone lead in the right direction? Thanks.

 

According to my Ford manual, a '67 F-100 with a six cylinder came with a C4 transmission. If it has a 352 V8, then it has the MX-HD transmission. I believe those were the only two options in the F-100 for that year.

 

Thats right, and you can tell if its still an MX-HD because the case is cast iron. They are hard to find parts for and the tribal knowledge out there on how to work on them if fading fast. I swapped mine out for the good ol' C6, which is what most people do. Another way to tell its still the original tranny is the MX-HD has a little heat exchanger mounted on the side of the engine.

 

MX Cruise-O-Matic (once called the BIG Cruise-O): 1965/67 F100/350 352 / Some 1965/68 F350 300 I-6 / 1961/67 Galaxie/LTD/Thunderbird/Mercury 390.

FX Cruise-O-Matic (once called the SMALL Cruise-O): 1958/60 Fullsized Ford Passenger Cars/Thunderbirds 332/352 / 1961/67 Galaxie/LTD 352.

These two C-O-M's are basically the same.

 

Bill;

Are parts still available from Ford for the MX? I asked on another thread about the detent lever/cam that's up inside. The MX in my '67 F100 (352 V8) doesn't want to stay latched in Park. I'm assuming that the detent lever is worn down.

The MX is a funny old dinosaur.....it looks like 1950's technology. I went through mechanics' school in '74-'75, and spent several months working on automatics. So I have (or used to have!) experience with transmissions of that era. The MX is surprisingly compact and simple and mechanically sturdy. It has a cast iron case and about one third the number of internal parts as a modern automatic.

A note for reference: Flipping through the Ford manual for the MX, I notice that it has a rear pump. This means that a truck with the MX transmission can actually be push started by putting it in Drive. You can't do that with modern transmissions.

 

AFAIK, no parts are available from FoMoCo, but that doesn't mean they cannot be found at Ford Dealers, obsolete parts vendors, transmission shops.

Bolted to the bottom of the upper steering column flange is a half moon shaped detent \ I I I I I / The shift lever has a tab on it that fits in between the individual gates.

People make the mistake of putting the shift lever into Park before setting the parking brake when parked on a slope. This can cause the truck to roll...just enough...that the parking pawl inside the trans locks up tight.

Now...the shift lever has to be YANKED out of Park to free up the parking pawl and over time, the individual gate between Park and Reverse snaps off.

After this occurs, when you put the shift lever into Park, it can slip out...and go into Reverse. Not pleasant!

C7TZ7A216A .. Detent / Obsolete

Fits: 1967 F100/250 352 MX C-O-M / 1968 F100/350 360/390 C6 / 1969 (before serial number D96,001) F100/350 360/390 C6.

GREEN SALES CO. in Cincinnati OH has ONE = 800-543-4959.

MILLER OBSOLETE PARTS in Binghamton NY has ONE = 800-546-7278.

ANTIQUE AUTO SUPPLY in Arlington TX has ONE = 817-275-2381.

DON SANDERSON FORD in Glendale AZ has THREE = 623-842-8762.

 

Ah-Ha! So there's supposed to be two detents, one down in the transmission and one up in the steering column. That makes sense. When I was trying to work on mine, there seemed to be nothing happening up at the column. With the linkage disconnected, the shift lever pretty much flopped around loose. So the detent in the column must be sheared off or worn down, as you've described. That's relief....I'd rather have to fix that than get way up inside the MX!

Digging through the Ford manuals, I couldn't find any good illustrations or descriptions of that detent mechanism in the column. It doesn't seem to be covered in the Steering section or the Transmission sections. Any hints?

You're saying that it's right under the steering wheel, inside the rotating shell that has the shift lever, right?

Thanks, Bill!

Bruce Johnson

 

The detent shown here: 1964/72 Ford Truck Parts Catalog ~ Illustration Section 35, Page 8.

There's only one detent...it's bolted to the bottom of the upper flange, just above the shift collar.

 

Where can one get a parts catalog to see the pics?? I have a 1964 f100-500 repair manual, will that show it?

 

Dunno, I don't have a shop manual. If it's a FoMoCo factory shop manual it might be illustrated....look in the steering column section...not in the trans section.

The 1964/72 FORD TRUCK PARTS CATALOG is available on a CD from hipoparts.com for $22.00.

 

Thanks for the info guys. The shifter jumping into reverse from park is ugly !!

 

Yeah, that jumping into reverse is dangerous! I had a close call with mine last year, just after I had bought it and gotten it home. I was maneuvering it around my parking lot, popped it into Park with the engine running on fast idle, and started to get out. About two seconds, and it jumped into reverse and started moving. Fortunately, I still had my butt on the seat, so I was able to swing my leg and stomp the brake. Another second and I could have been pinned by the open door.

Bill, I dug all through all three volumes of the '67 factory manual, and I couldn't find any place that shows or even discusses that shift detent in the column. The Steering section covers the overall steering column installation and removing the steering wheel. The transmission section covers adjusting the linkage. The instrumentation section covers disassembly of the horn button and the turn signals. But nothing seems to cover the shift lever mechanism on the column. Another great Ford mystery I guess...I'll just have to pull it apart and see for myself!

I guess I should photograph the repair and post it here for anyone else who has this problem.

Incidently, I just ordered the part from Antique Auto in Texas. Nice, helpful guy, and he said that he had several in stock. About $20 total with shipping.

Thanks again for your help!

 

xstrange: It may not be shown in the shop manual, but it is shown here.

 

xstrange, if you can post pics of the area that would be great. And 20 bucks isnt bad. Let me know how it goes.

 

Since this is clearly a safety issue, I'll be happy to cover this as a public service to old Ford owners! And to owners of old Fords!

The part is supposed to be here in a few days.