Vladislav

The main target of the work was to remove all rust spots including potentional ones. Such areas took place between the floor sheet and floor support reinforcements. I took measurements off those channels, made scatches and ordered new ones to fabricate in a steel shop. Got parts in a week or so and after that my guy drilled off all weld spots (and drilled some through) and the old parts were removed. Good thing the rust protection coating used at the factory was asphalf (bitumen?) based. So half a jerrican of gas made a job removing that stuff away.

Next step was putting the cab on its back. We removed front reinforcement parts, front cab mount brackets and the airbag assembly. Steel bolts got almost stuck in aluminium mounting brackets so regardless extensive penetrating with WD40 and hitting by hammer we got a dozen of them broken down. Could remove the brackets from the cab pockets. Than later having them on a bench I welded nuts to the ends of broken bolts and after multiple attempts combined with heating, hitting and penetration removed all the restovers.

Had to make reinforcement straps to support the roof which lost its original strength. Used steel stripe 6mm (1/4") thick and 50mm (2") wide. Bent in shape to follow the roof curve but also to stress it upwards. Made two such straps.

No that engine was not military only. It was originally offered by Mack as a part of the newly designed Thermodyne family in November of 1938. So it was before the beginning of WW2. I'm not ready to share facts right at the moment but suppose they were also installed in commercial trucks after the war until newer generation of the same basic design came into produdtion. Worth to note the military version had some specialialities such as modified oil pan and pump to clear up the front drive axle since those were used in 6x6 trucks. Also they didn't have dual ignition being not a firetruck engine. But the 2nd spot in the block for the additional distributer drilling and the 2nd geared area on the engine shaft were all there.

After that I invited my friend who is a body guy to get the roof closer to its normal shape. Seemed like during the years of service many folks made dancings on that roof so it became more as a pan than a dome. The pics are of the before and after. And also one from the net taken at some time long back at some truck stop by some driver who asked the Mack driver for permission to pose on the hood... In fact that was not the truck I took the cab off but the second one and illustrates really well the actual grade of respect people payed to the rigs they worked for living. To be continued

Having all the parts in place I drilled holes for pull rivets from the outside to attach the wall sheet to.

If you look from the opening there was a gap occured between the steel sheet and reinforcement channels where the wall didn't have depressions. The task was to have a tight fit so we had to fabricate spicers. My helper cut pieces off the same square channel the way I showed him and than tinkered with the final shape for a couple of hours following my directions. Those metal pieces looked funny but fit well. It took him a couple more hours to duplicate the part for the other side. After that I welded both spicers in place. Some grinding smoothed the look and the result showed up. Than we had to make something similar to the side areas since there were gaps either. But those spots were much easier having no angle crossing of the surfaces.

The first thing I wanted to do was to correct the sleeper entrance opening. When I made new sleeper it was done a bit longer than the original one to be able to walk into. Originally it was a crawl through style so the cab had only the rear glass removed and cut out for 100-150 mm lower the window lower edge. A long while back Dan Bruno had scatches of the sleeper of the Rubber Duck RL700 on the fan-site page he ran at those times. I took general sizes of the opening from there and used them making my sleeper. So now just needed to cut the cab the same way. Cutting itself was sure not a problem. The difficulty was to organize some thicker edge to the cab wall to be able to fit the entrance boot in the future. Also I wanted to reinforce the wall after I cut alot of it away. Measuring the distance between the inner interior lining and the metal it seemed suitable to use rectangular steel pipe. Or a channel. In Russian we call such beam as a pipe but seems American terminology is different. Nevermind. I used pieces of the channel to put vertically and attached by a pair of machine screws at each end. Made them having the heads outside in the rear wall depressions so they wouldn't rub the sleeper wall. Also they're difficult to see on the truck when the sleeper will be in place. Than I cut two pieces for diagonal portions, fit them in place and welded to the stakes.

We stripped the cab to the bare metal.

I ordered my helper guy to remove everything from the inside and off the firewall. Said him to mark as much as he could or what seemed notable. I went off for a couple of days and when back found a funny fact. He needed to put marks on the paper masking tape he glued up but he didn't know what was what in the most cases. That way he marked many spots with what was written on the shields and gauges. So I could see the badges written in English and that was done by a person who could not say or wright any word in English at all! Sure no problem, worked out fine.

It happened that the job is already done at the moment. Sure turns out more interesting when you share progress step by step but in many cases it's difficult since you're full with current tasks and also unexpected deals but need to cut some time for posting. So this is such case. Anyway I would like to show up the job since some points of it seem worth to be shared and I hope people would like looking it either. Ok, some while back I could put my hands on a spare cab which was installed on the spare truck. Good thing I bought two similar trucks so I redo parts from one and have the second one still running. Worth to note I'm really glad using this way of restoration. After taking off the hood, sleeper, tanks and detaching all air lines and wires we put a wooden bolster into the door openings and haged it by two overhead hoists. The hoists were orginized to move left and right so we could take the cab to the side moving both winches at the time.

Bringing the truck to the bodyshop seems as the only way to go. Or... You could buy another B-model or the front half of it and bring it down there instead A story of that kind - when I asked an upholstery guy to make me two new door panels for my R-model I brang the old pair of those as a sample. And after I got comment of he better needed a vehicle to make the parts into the correct shape (he already made them larger) I showed up with not the truck's cab but the door

Mack EY. Made in 1943.707 ci displacement. As you can see both manifolds are on the right side.

R700 had different front spring mounting brackets. I would expect difference in that matter. The cab seats higher off the fuel tank top line than a R600 too.

These are Down Under coasters

Looking the pics I would say the front sheet matel is not very good. The cab is probably of the same sort of condition. Also a big question is the frame rails since no pics you could determine how they're good or bad. The current bid is $3300 and the reserve not met.

Also an interesting fact is the diff ratio. Mike, what the thunder did force you to set up a new account?

My bet that's EY 707ci Mack engine taking to account the production year.

That was a good idea. I even spinned a couple of serious thoughts in my mind.

Just don't cut it off the frame rail and put up for sale on flea-bay

If you look at the pic of the light in the very beginning of the thread it doesn't have any reflection area. And that part was mentioned as a R-model light. The one I posted with reflector is for R-model also. These are common ones for all late R's, RB,s DM,s etc. And those trucks didn't utilize the additional reflector. The pic of the early R has it what might mean it was needed to be installed. If the light with no reflector was used on R-models originally that could be the reason to install a separate reflector nearby. Than later Mack or vendor improved the light adding reflection area and the separate part became useless. This is my suggestion, I don't have a track to original source of info.

Doesn't it look strange with reflector put right near the turn light which already has reflector integrated? Seems typical for early R's having those additional reflectors. And by this way it seems to me there was a matter for that.

If the memory serves he got a serious engine issue. So probably no thriumphal run any further since. Good if I'm wrong.

Seems like now you can take some of your breath away. A bit of filling and sending and it's ready to obtain a colorful look

Mack introduced their first own diesel together with other Thermodyne engines - 519 c.i. ED Lanova in November of 1938. Interesting fact they offered gasser in 3 displacements of 510, 673 and 707 but the only Diesel was in the smallest block. In fact those gassers and the diesel were very similar in design having the most of the block as the same casting, same crankshaft, oil pan etc. But seemed Mack tried to go a safer track with diesel offering it of relatively low HP and with thicker cylinder walls. In fact the next generation was END-672 which also used Lanova combustion chamber but was made in 673 c.i. block. Not ready to say the year of beginning of the production, probably 1945 or 46. The fact of LT with Mack gasser existance seems as one really interesting matter no doubt. Might worth bothering Mack museum if no other facts show up.