Job41

It looks like it would make a solid start for a restoration project.😃  But, that is typical of any old B model Mack.

We need pictures for those of us who don't know how to read!

Is it a SX version?  What is the load capacity of the rear axles?  

Hurstscrambler,

No, I volunteered to lower it to 3k.  I think that is fair.  The truck is getting to a point that she is in need of a lot of work, as you can see in some of my photos.

Thanks,

Job41

I am loading more pictures to give a better idea of what needs to be addressed on the truck.   I have had a few people look at it expecting they could just put it on the road immediately and then find out it is going to take a number of weekends to make her road worthy.  May I also point out that most of the lights are not working.   The low air buzzer isn't working.  I want the guy who purchases it to know what he is getting into and be satisfied with the purchase.

To everyone at BMT,

Yes, the Autocar still sits in my yard and is still for sale.  I haven't started it up in 3 or 4 months, but if I charge the batteries and hook up the block heater for an hour or so she should fire up.

More information would make this posting more interesting.  Is the transmission a duplex, triplex, or other?   Does it have the original engine?  What is the condition of the cab floor?  

Here are few more pictures to clear up questions some may have.

Rustydog,

I thought it was a fair price, but a few years ago I had put it on CL for $4000.00  and the best offer I got was $1800.   One guy offered me a Chinese made four wheeler (quad).  I guess big heavy duty single axle dump trucks are becoming like white elephants.  Contractors would rather buy a ten wheeler or a tri-axle dump.    I have used it more as a horse than a dump truck.  I have moved my old backhoe and my old D6 Cat with it.  Don't tell anyone my  D6 9U weighs twelve tons but my trailer is only rated for nine. However, those were usually short little trips of no more than seven miles taken slow and easy. The Awful car ( my brother's term for the old girl) handles it quite well.  That reminds me of another bit of information which I should relay to potential buyers.  It has 18 inch diameter brake shoes, which are quite expensive.  The current set are in good shape. 

Job41

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TozziWelding,

Thanks for helping to get the word out.  Here is another picture for the viewers' perusal.

Heavygunner,

It would cost a couple of grand just to have it hauled to Montana.    By the way, I think she tops out at 65 mph, and that would be with the engine cranking 2100 rpm and both trannys in overdrive. 

Wow !! That is a gorgeous truck.  I would love to have one like it, but then I wouldn't be able to drive it.

How good was air assisted steering? I have never driven a truck that had that feature.  I have heard some drivers say that it has a funky feel about it.

Sodly,

I am not an expert on Mack trucks and the various models. However I am an engineer and know something about structures.  In the area of the front axle the biggest affects on the frame are shear forces.  Cross sectional area of the frame rail is what resists that shear. Also, Mack used a very high strength steel and therefore does not need a lot of steel to resist those shear forces.     Frames need to be deep when there is a lot of bending force. ( In engineering terms we call it bending moment.)   That would be in the area half way between the front axle and the rear axles.  So manufacturers  can make frames shallow in the regions of high shear and deeper in the regions of high bending.   This understanding  allows the truck manufacturer to make decisions in order to lower the height above the ground to the top of the truck frame  or lower the region around the engine.   Some manufactures keep the same depth of frame rail to make manufacturing easier.   I hope this helps.  Unfortunately, I don't have the time to write out a better explanation.

Best regards,

Job41

It is a good project truck for someone who is feeling ambitious and has some time on their hands.  That is the trouble these days is  to find time to do extra projects. 

Is the frame rail starting to delaminate? 

Nice looking old R - model!    Did the 1970 model year trucks still have a steel dash board?  A few pictures of the interior and frame would be nice. Is the three speed auxiliary transmission shifted by air or stick?

The E models had such class!  It would be a really cool truck once finished up.   It is a shame to see her sitting out in the weather in primer.  Was the frame blasted and then all necessary coats completed?  It looks to be in a glossy black.

How well did the TRQ stand up to the torque of a 335 Cummins?  I would imagine that you would have to rebuild them more frequently.

What transmission would be behind that Cummins?   I tried to use the BMT Wiki, but the pdf data sheets will not show up for me using this new site. 

Nice Rubber on the back.  Are the extra fenders in good shape?  Also pictures of the cab floor would really help.

Another Mack DM819SX for sale advertised in the truck paper.   Mack V8 engine, eight speed transmission advertised, but it looks like there is another shifter in the cab pic.  Located in Pittston, PA.

http://www.truckpaper.com/listings/trucks/for-sale/7047501/1970-mack-dm819sx