Info needed: Ford CMP- Transfer case insulators

[Hanno Spoelstra]

This is great info, Jacques!

Now that I am aware of this of course I need to fit these to my F15A.

[Bob Carriere]

Hi Jacques

Some cab 13 have coil springs on the front cab mount others have large crude rubber washers......... whether for vibration or flex one has to remember that riveted CMP frames are very flexible and will twist wildly over rough terrain.

The difference between 1/4 and 1/2 does not matter much as you will be aligning the shifting mechanism of the T case to match the frame twist. when I was road testing my C15a with a transplanted 2 speed t case I had to do a lot of fiddling to get the shifting rods of the T case just right..... at first everytime I drove over a steep road bump the t case would pop in neutral leaving me stranded and the gears locked in neutral... eventually got it right.

No matter what they ride hard......

[Jacques Reed]

Hi Bob,

Interesting points you raised.

Yes, the cab on two rubber isolators up front, and an isolator and springs rear, would make for some movement between the shifter arm and the transfer case during twisting and bouncing along. Hopefully enough give on my single speed F15-A lever setup to avoid some of the problems you mentioned.

Here are some recent photos taken last weekend of a mate's transfer case isolators on a two speed F-60 transfer case. Possibly original but flogged a fair bit. They Could have 4 layers of fabric in them which is in keeping with tyre sidewall or heavy conveyor belting.

Cheers,

[Bob Carriere]

....may have driven them to officially use old tire sidewalls......after all they were available for the taking......

The two speed T case can be a nightmare of adjustment with delicate screw in adjustment on the rods...... the trick was to find the right spot and retesting until I found a sweet spot...... takes a while= to adjust the rods one turn...reassemble and retest....... to find out you went to far and now have to unscrew one turn and try it.... the two sseed is really great for crawling over obstacles......or real pulling like digging out my Massey tractor when sunk in the mud...

[Grant Bowker]

Bob,
Please don't try to use the complexity of adjusting your 2 speed T-case to try to convince the Ford owners of your Chev's superiority...
I'm almost certain that instead of the Chevrolet method of mounting the shift linkage to a bracket on the frame and the transfer case also being mounted to the frame (allowing relative movement as the frame twists), the Fords mounted the linkage and lever to a cast bracket mounted directly to the 2 speed transfer case which should have greatly reduced the chances of the lever and case getting out of alignment.