Jeff Lakaszcyck
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David I actually have two extra tanks, I’m just going to mount one as a dummy. Are there left hand and right hand tanks ? If so all mine are the same, left hand.
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1968 Mack M123A1C 10 ton Tank Transporter
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Jeff Lakaszcyck
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I really just worked opposite sides of it and let it cool down between welds. The plate I used was 1/8”, same as the fenders so I didn’t have any warpage issues.
The issue which usually makes a M123 over width is the mud guards mounted between the fuel tanks and the intermediate axle. Truck illustrated does not have these mud guards or quarter fenders so with the outside tires removed it may be under 102" wide. I know forward of the fuel tanks it is.
Jeff Lakaszcyck
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This one will have singles on the rear, and the off set of the wheels we are using perfectly match the front track. I'm not sure if these wheels were custom made or came off something else, but we won't have any width issues.
Jeff Lakaszcyck
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Got the new windshield frames painted yesterday and installed today. Now we will be taking a break for a week or so to attend the ATHS truck show in Harrisonburg Virginia and visit with friends.
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Jeff, maybe you already mentioned it, but which paint you use. That is, which current codes, if you have them. I am still looking for good paint, and this seems very nice for my 1965 M51A2.
Dirt71
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No sir there is not a left or right side....they are the same
Reference post 67: tanks are not the same as the fuel fill is in the front on both sides. Also, as built, a M 123 feeds on the left tank which is where the fuel filters are, and returns into the right tank. Unlike its' 5 ton brethren, the 10 ton has a crossover line to allow the contents of both tanks to equalize.
Dirt71
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WOW!! Mr. Fasttruck... the only thing you are correct on is that the 2 tank's have a cross over line to equalize the fuel level. The fuel cross over line goes from the left side (driver's side) to the right side (passenger side) and the fuel line goes from that right side tank to the filter's to feed the engine located just in front of the steering box directly under the driver's side door. The fuel return line come's off of the rear of the left side cylinder head down under the cab and crosses over between the cab and winch and dump's into the right side tank. I've owned many of these truck's over the year's and even the LeRoi Gasser 10 ton fuel tank's were built the same from left to right, but they did not have a return line and no cross over line between the 2 of them. they had a fuel pump in each tank and a switch in the cab to select which tank you wanted to use. I'm not trying to sound like a know it all, but I do know these 10 ton's pretty well!!
Jeff Lakaszcyck
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I got my paint from Midwest Military. It is the correct paint for a Vietnam era truck.
Jeff Lakaszcyck
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Thank David. That puts the drain plug towards the frame on the passenger side. My truck was plumbed to run off of one tank years ago. the passenger side tank was removed.
Jeff Lakaszcyck
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A lot of cleaning, sanding, painting, and assembly has been going on. Most of the big stuff is on. Still a lot of things to do but we are looking good for Macungie on Thursday. The M123A1C is starting to look like Army issue again.
Jeff Lakaszcyck
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It's not done, but it is done enough ! All the big stuff is on, including the spare tire and that big heavy (200+ lbs) winch pulley assembly. We also removed the metal top as the front of it is pretty fubared where it had been previously welded to the windshield frame. There are no tail lights yet, there are wiring and instrument issues, and we haven't even touched the interior yet, but over all the truck is very presentable and I'm very pleased with how far it has come in just a few weeks. We are off to Macungie Thursday (on a trailer), stop in and say hi if you are at the show.
Jeff Lakaszcyck
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We will be in good company at Macungie, with John Gott's 1942 Ward LaFrance 1000 Series 2 M1 wrecker, and the Wheels of Liberation Collection's 1942 Diamond T 981 prime mover. We will be at the show Thursday thru Saturday.
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Damn Jeff!! ... and I thought a Ward was big!!
Hope you and John have a great time.
Hope you and John have a great time.
Jeff Lakaszcyck
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Howard, the 10 ton is deceivingly huge !
Jeff Lakaszcyck
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I realized last week that the 24087 is the actual paint code that is referenced on the 1968 Mack order sheet. So this is definitely the correct paint for this truck.
Reference post 69: fuel lines. This is not my first rodeo with M123s either. I served in a unit that had 22ea of them and then owned my own for 10 years after they were sold off. None of them had a fuel distribution system anything like what you describe in your post. The fuel equalizes between the tanks and then (you say) the feed to the filters originates on the right side to supply a filter set on the left side ? I don't think so. There is a tee on the left side where the cross over line attaches and the line to the primary fuel filter originates. Or did somebody apply unauthorized MWOs to the trucks you worked on ?
Dirt71
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All I'm gonna say is that every 10 M123 that I ever owned (12 of them since 2005) the fuel line's were as I described so I seriously doubt that all 12 were changed in the same manner!! The M123 that is sitting in my driveway as I write this the fuel line's are configured in this way. Even the M125 that I own that was repowered with the Cummins V8 300 by the (ARMY!!) has the fuel line's ran this way...GEEZ!! I'm out of this discussion, I was just trying to help my buddy Jeff with the question's he had on his truck. Jeff you can stop by anytime since you are somewhat close to me and check for yourself.
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Jeff, you really know how to make people drooling on their keyboards!