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Here's a litte video of the truck for all those interested. Making some headway here and there, working on painting the bed currently. Pics to come.

Hi y'all, I just picked up an old B61 dump truck. I've been searching for a dump for awhile now and have been waiting for the right one to come up. My Dad and Grandpa ran a R model 300/ 10 speed

That’s neat he was still showing it in 2001 that’s the first year I started showing my 1976 Autocar. I’ll try to find those pics or I know a guy who might. Here’s my old Autocar I’m sure your dad will

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The torque from the engine can tear up the quad box

AS STATED ABOVE, CHECK ENGINE FOR TAG, OR POST PICS

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Success is only a stones throw away.................................................................for a Palestinian

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Yep as said above, nice old jigger 

 

You'll find once your used to the quad box it will be pretty easy and you will only use half the gears 

Even if you have a full load on you wont use all the gears as some are almost the same and after a while you will stop using the clutch once your rolling and the oil is warm

 

Have fun and welcome 

 

 

Paul

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I went ahead and took some pictures of the engine for you guys today. I know casting numbers don't say a lot, but there were no engine identification tags on this engine. I was looking for tags behind the injection pump but the block is bare. Can't find any stamping marks like you would expect with a serial number. The E6 in our R model has tags and is very similar other than not having an air inter cooler, what I think is the block casting number was one letter off I think. All the photos I am posting are of the B61 and not the R. My pictures aren't great but they're better than nothing. On another note, what are you fellows referencing asking about 34s and 38's? Wheel Diameter? As for the front axle, I'll take some pictures tomorrow and post them up for you to get a better look at. Thanks! - Colton

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excellent have a ball.....you got it all,,,,,cool old rig,,,,with horsepower as well.....i noticed,myself....front and rear axles both look way newer than 1960....especially the oil hubs....bob

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Definitely a coolpower job, 

 

34's and 38's  refer to the back end as in how many thousand pounds they can carry 

Need to sort something out for the air going into the tip turbine(needs clean filtered air into that big open hose) and she's ready to roll 

 

Paul 

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Check for the letter/numbers per diagram for engine block identification. 

If you can get the full Mack 313GC number off the pump tag, might be able to do some figuring that way as well.

Unit  Ident Mack - Copy.jpg

Jim

It doesn't cost anything to pay attention.

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That's a cool old B Model, does that have a Mack transmission in it ???  Quadraplex was kinda fragile with a 300. I ask cause you mentioned crawling underneath it when it was stuck in gear ?  If it's a Mack 5 and a 4 way behind that then that's a little more durable with the 300.  That old girl has air assist steering too I see.

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Passion equals success  👍

we have the same inter-cooler on our E6-350, definitely a second air cleaner (dry element unit) to match the right side air cleaner, which should also be a dry element unit with your EM6 - 300 engine, it will pull real good  

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9 hours ago, Brocky said:

The Mack Quadrplex will hold up OK behind a 300 as log as you DO NOT LUG the engine. Keep your RPM's up..

That's pretty much what I figured. This truck has got plenty of logged hauls that were left in the glove box dated 1998-2001. 

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