The Stovebolt Site Forums The Shop Area Paint and Body Shop 1941 AK cab mounting kit CB205 from Carter question

I bought cab mount kit CB205 from Carter. The instruction are very poor and seems to show four mounting points instead of the three in my cab. Can someone put me straight? 1941 AK

Many thanks

Keith - First off, Welcome to Stovebolt! I'm looking to try and help you out with info I can pull/post from original Chevrolet Shop manuals and parts books (and any other sources I can scare up). It would help us answer your question if you could take/post pictures of your frame and cab mount areas so we can see the "three" mounting points you are referring to please.

Reason I ask this is everything I've come across so far shows there are 4 mounts per cab side, so it will help us figure out better by seeing what you can see.

Hey Keith!

I purchased the same kit from Carter just over a year ago and the "Instructions" were very poor.
I had just purchased my project truck and was just figuring out that it was not what I thought it was ( a 1940 1/2 ton KC) but that it was a combination of bed, cab and frame from different years.
I made some notes when wrestling with the cab mounting kit that might be of assistance to you.

As was posted on the VCCA site in April 2024:
"It really is a simple job, but the instructions that came with the kit were pretty close to useless. They were an illustration that was not very detailed to start with and had been copied so many times that it was hard to tell a split washer from a nut.
I found a "Tech Tip" on the Stovebolt.com site which helped a lot. It included much clearer images of what the kit includes and those images were presented in a way that took most of the guessing out of the process.
A couple of points that were not clear (to me) from either source were - if numbering the 4 mounts on each side from front to back:
> The largest piece of fabric/rubber goes with mount #1, the next smaller piece goes with mount #3, the smallest goes with mount #2
> The longest bolt goes into mount #4
I am not an expert by any means! So if anyone knows that the information presented above is incorrect...PLEASE let me know! I am posting this because I couldn't find any descriptions posted by others that covered the questions I had, so I tried to figure it out as I went along.

Also, since I was working alone, I found that if I put a socket wrench extension under two corners of the cab as rollers, I could lever the cab around on the frame to get it to where it needed to be.
My cab is a 1940, but the frame seems to be a 1947, so where the mounting positions on my project are will probably be different from yours.

Good Luck

Also, I only found a couple places that appeared to be mounting holes for the cab...and then I realized the the previous owner had set the cab in an incorrect location because he found a couple holes that lined up and figured that must be where it was supposed to go.

Nick - Is this the Cab Mounts Tech Tip you're referring too? Great pointer and thanks for mentioning it to help Keith out!

Here are a couple of snap shots I took from an original 1942-46 Chevrolet Car and Truck Shop Manual that may help out a little too. I've included a better picture of the original diagram plus the text description of the mounts in the hope it might also help Keith out. What I don't know and couldn't confirm is if the 1941 AK mounts are the same as the 1942-46 mounts??? Perhaps other Bolters will pop in and share their wisdom?

Yes Dan, that's the Tech Tip I was referring to.
Here is the link to a PDF of that Tech Tip that results in clearer drawings and a little more text: https://www.stovebolt.com/techtips/cab%20mounts.pdf
It is interesting that the illustration from the '42-'46 Shop Manual seems to indicate that my suggestions of where which rubber/fabric pieces go, may be different from what the factory intended...but then again, the factory was dealing with a cab and frame that were intended for each other!

When it came to the rubber pads, my old ones were still on the bottom of the cab. So I matched them with the new ones. The longest one was on #2 and the medium one on #1. Then I used the short one with the wooden block. (They're not tighten down yet.)

Update: I'm now second guessing the way I installed them. I tried to match what was already there, but maybe that's not the correct placement? Since they're not tighten down yet, I'm going to take a second look to see what makes more sense.

OK - I switched the #1 and #2 rubber pads. Longest pad on #1.

That looks logical. Why not just use one long piece of rubber in place of both pieces? Even of the factory didn't do it that way it seems like a better method to support the cab along the entire length.

Also, I know you aren't painting your cab at this time but I'd strongly recommend priming and painting it in those tight quarters and everywhere it comes in contact with the rubber and other metal.

At the point of mounting the cab. My truck came directly bolted to the chassis, so I have no reference or pictures. Great info, yes all the instruction sheets are horrible. Utah I can see your logic in longest pad at #1. Looking at the pics below, I still have some questions. The screen shot from the Jim Carter catalog appears to have the longest and shortest rubber insulators on the bolts for the #1and #2 position. (But which one is 1 and which is 2 remains a debate). Then shows the mid length rubber piece on the mid-open bolt which I assume is #3 and should be used in conjunction with the wooden blocks. #4 I believe is the rear cab mount with the larger spring and round insulator. The instruction sheet leaves it up to interpretation. 1 and 2 have insulators, 3 with the block has an insulator and it shows the insulator being smaller than the block. Which way does the block orient when placed on the frame using the diagonal cut of the block as a reference point. This could change which insulator is used. All help, especially some pics of the #3 and #4 mounts installed would be greatly appreciated.

You might find carter auto restyling video helpful ,his truck is a 1936 but the mounts look similar as far as I can remember look through his y tube library 📚.There is one video were he installs the mounts.

I have attached a photo of the third mount from the front on my Frankentruck. ('40 cab on '47 frame)

I ended up assuming the the best way to install this irregular block was with the cut-off corner inward and to the rear.

The attached photo is of the passenger side, the front of the truck is to the left. (The fuel tank strap bolt is at an angle because there is no fuel tank at the moment!)

In the image from above, there is a block of wood under the three screws that ties the back of the cab to the front just after your second mounting bolt. This block of wood is the pivot point, so be sure its in good shape or your door seems won't line up. The rubber pads are isolators, place them where they best fit and do the most good. A long pad on a short mount does no good, the longest ones should be under the front where they make the most contact with the frame and cab. The rear pads don't need to be any bigger than the mount setting on them. Don't assume either set is correct.

That's how I have my block set on my '46. It would only sit one way to fit next to the seat riser.