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Call me crazy...Ive got CM422 on the brain...


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18 hours ago, bbigrig said:

For comparison purposes. 

Similar frame rails. Not exact. Very few bends and curves in comparison to other models Mack offered.  R series style cross members used.

20210926_211104.jpg

The table is what I used for reference. Just didn't post. As you see CH has 10" rails and I suppose pre-2004 Vision either. CM had 9.27 as printed in the pdf file and the table points out 9.38. So there's a mess already. I may suppose the rail section was the same channel as CL600/RW600 rear portion of the rails had. 9.27 could me missprinted 9.37 or vice versa and 9.38 as just approximated 3.37. Interesting point are the CM rails SAE 1/4" 6.35 mm or metric 6.00?

BTW the table shows 0.24" thick steel both for CM and CH. But it shows the same figure for MH/RW. At the same time two of my MH's have 6.35 thick rails and one of them is as late as '91.

post-16320-0-89327900-1444347491.jpg

Никогда не бывает слишком много грузовиков! leversole 11.2012

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18 hours ago, mrsmackpaul said:

I have never seen a midliner with a bonnet or hood on it, I  assumed that was a North American thing

Vlad do you know if a hood was ever offered in Europe?

 

Paul

No Paul, as long as I know the hood never showed up in Europe excepting a few trucks imported from the US (probably to Russia only). So my understanding the hood was American thing. Together with the reworked cab.

As for the spoke wheels as I figure we say Midliner for CS and MS cabover. The brochure I posted describes CM which didn't seem called Midliner by Mack.

Никогда не бывает слишком много грузовиков! leversole 11.2012

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29 minutes ago, Vladislav said:

No Paul, as long as I know the hood never showed up in Europe excepting a few trucks imported from the US (probably to Russia only). So my understanding the hood was American thing. Together with the reworked cab.

As for the spoke wheels as I figure we say Midliner for CS and MS cabover. The brochure I posted describes CM which didn't seem called Midliner by Mack.

The hooded Midliner built by Renault was never available in Europe. There were a few customers from the Netherlands (as an example) that had to order CS Midliner models (with hoods) from a Canadian dealer and have them shipped back to Europe. Renault/Mack refused to sell them direct from factory.

CS and MS Midliner were never offered with spoke wheels.

The CM400 model line was referred to by Mack as " The Baby 8" (small class 8) The CM was engineered and built solely by Mack in Macungie PA.

Edited by bbigrig
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  • 2 years later...

Data on this CM is fairly hard to find. What is GVWR? Is it 33,001? Or simply however many axles a guy can hook up behind it?

 

Would be nice to hook up to B-train high boys and go haul hay bales

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  • 3 weeks later...
Posted (edited)
On 9/26/2021 at 9:29 AM, Vladislav said:

Thanks for the details, almost new story to me.

A bit more of couriosity, and sorry for that - what are the front spring hangers and spring packs? CH I suppose? Or R? To my understanding CH has different spacing between the springs than an R but the axle beam is probably just drilled a bit different like it was done to MH/RW being basically the same casting used on R's, CH's, MH's etc.

And how are the air tanks and battery boxes arranged? I don't see what was typical for a Mack chassis of the era on your pictures.

the front beam is shared around, it has a large flat pad thats wider then my frames/spring spacing. i just noticed it replacing my tie rod and leaky hand primer pump(left me stranded). replaced injection pumps hand-primer and added one after the tank to get fuel pass the primary filter. as im checking out my axles i have a eaton 24000lbs rear axle and im gather from here a mack axle up front.  i dont know original GVWR, currently under the radar and AT 26000lbs. my truck has been a road-tractor then a dump truck, now a flatbed truck and in future a darak runner. 

yes whatever you the truck builder makes it and registers it as. i have double frame i was surpised.  just gonna add dual drag arms and shocks to both axles. with macks t-case hoping its not too baby to fit shafts long enough for full axle travel

my cab is fastened to frame by four rubber cylinders(just solid isolators) and four shocks. 

 Pedigreed Bulldog great job on restoration. i like the colors.  and thanks for info. What rear axle do you have? and any tips on replacing wheel seal?? i changed twice!!! and still leaks.  oddly enough i can see the seal through inspection holes in the spider, the seal is completely dry!!!! 

Edited by glenbjackson
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On the wheel seal.. Get out your mic and calipers and do some measuring.. I had a new Frtlnr that came thru new with the inside of wheel bearing .010 larger than the spindle.. went thru 3 sets of seals before the shop figured it out..

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Brocky

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