another CAN m37 resto

Steve Wilson · #1 09-08-12, 18:35

Thanks for the input guys. I have done the 4 wheel disc brake and dual master cylinder mods, also power steering. I put swinging pedals from under the dash to get more foot room. I was planning on a v8 conversion as well as they will rev better for longer. I was planning on using 11-20 tires and have started mating rims together for this.(pics later)
So your saying these axles are weak? The inner axle shaft? ring and pinion? spiders? Rear ? front?
Please explain further before I go much further with stock stuff.
Again, I apreciate all the help and input.
Steve

Oh, and I have got "colour your world " to match the colour in epoxy primer and 2 part urethane top coat , Picking it up tomorrow morning.

rob love · #2 09-08-12, 20:10

The rear left axle shaft (the long one) is notoriously weak. They were weak in their service life, and are weaker now with wear and age. Apparently some of the replacements may be a bit better, but I have no experience in them.

I broke mine one time trying to get across an icy intersection. It suddenly caught and shot across, but the axle shaft broke at the same moment.

The Shilo museum also just recently had to replace a shaft. Not sure how it got broken.

Edwin Wand · #3 09-08-12, 23:48

Recently our M43 ambulance broke a rear axle, the short one. It was under no particular strain, had just been started and put in gear when there was a loud clunk and that was the end of the axle.

We replaced both axles albeit we had considerable difficulty in extracting one half of the broken axle that had become wedged. We removed and cleaned the differential and there was no further damage.

The interesting point is that in our opinion the steel was defective. Sheared in the middle, each piece ended in a sharp dagger much like a wet piece of wood might have split.

That it lasted 60 years is remarkable given this defect at the time of installation.

The metal was crystalled and discolured. It seems likely the cause was improper heat treating combined with too rapid quencing.

It would be interesting to know if others have experienced a similar short rear axle fracture as the result of defective steel.

jason meade · #4 10-08-12, 16:09

If I remember correctly the short shaft had problems, closer to the spline than where yours broke, I have seen two others break with both being just past the spline.
Jason

Ewen B · #5 17-08-12, 02:46

Hey. Here is the paint code for the colour chip (that fell off the truck) I took to Home Hardware and had them scan on their computer. They produced this paint for me in the beauty tone rust paint. It is the brown-green paint, glossy. It works good and at around $36.00 a gallon (3.48L) can it is cheap. It is mixed to a clear base.

Product: 1823-389
size: B-Y26
Colour:H-7y 12 (could be H-74 12)
Formula:2-36

I will be getting a new batch done up so I can paint my frame and undercarriage. It will also be used to paint the old green truck a solid green.

I will get some better photos of the colour on the truck for you.
Ewen

Ewen B · #6 23-08-12, 03:52

Here is a better photo of the green paint that I had made up.
Ewen

Steve Wilson · #7 23-08-12, 23:22

Thanks very much Ewen ! I will look into that.
I have been really busy with other things but I'm itching to get going on mine again soon. Also I want to get some pictures up for you guys, just can't find the time lately. I will soon though. I promise
Steve