Vladislav

Tom, it sounds like you just didn't tell that ferrule was made of gold. By its look it could really be. Otherwise I have no idea on the amount of efforts you put into location of it.

Happy B-day Heinz!

I've driven over that bridge in 2018. From Maryland to Virginia Beach. That was a matter of interest. My plan was to reach Keystone Truck and Tractor Museum and when I saw so long bridge on the map I resolved to take that route. Very impressive no doubt. I parked at the view point parking lot near the entry and saw a storm upcoming in the sea. So figured to not wait long. Had no idea on how the crossing could be dangerous. Expected for that to be safe being on a public road. And I was with a rental SUV, not a truck. Hit hard wind when over the bridge but that seemed normal for such a place. Reached the other coast before the rain. Sorry to hear about the crash and the driver's death.

Chassis booklet says 33.94 wide at the rear end and CL/RW2 keeps the same figure. R-models and its family is 33.37 and so on around the figure depending on the thickness of the steel. Good point indeed, CH/CX accomodated 6 in-line engines only. Mack or MP8/Volvo in later years.

I've taken apart and overhauled/restored two water pumps - for Lanova and for E6-350. Provided all the works with basic shop tools. You take the assembly in halves than take the rotor off the shaft using a suitable puller than pull the shaft with both bearings to the outer side (front of the vehice). Than pull the bearings off the shaft and wash them refresh the grease or just renew them. The seals I dealt with were of different styles. Lanova had a carbon setup and my Dutch friend supplied me with NOS repair set. E6 had unified seal which was avalible from PAI and easy to replace. For some reason I've stocked up with a couple more PAI seals. To me it looked like you could upgrade an old pump to that unified seal applying some ingeunity and lathe work.

So those valve seals for 0,5" stems - are they Mack part? Which engine were they supposed to be installed onto originally? I knew that stuff for E7 Joey posted but never heard of seals for 1/2" stems. BTW my Lanova engine also had 1/2" stems both intake and exhaust and it used steel caps put under the stem upper dishes for "shielding" the oil.

You can do that with a corner grinder Accompanied by a caliper for control of evenness and a piece of sand paper put on glass for final finishing of the end. Sure machine shop is much better option!

Those do spread definitely. I ment no spread in CH/CX chassis.

Looks cool and you seldom see a MH with that long wheelbase. Fish belly frame rails is standard equipment for every MH and also 2nd series Superliners. The length of that higher section area is also standard no matter how long overall length of the chassis is. Those frames were made with very artificial front end either and looked like a high engeneering product. They also became the basis for the CL-series but to my surprize and missunderstanding next generations of the chassis (still Mack chassis not Volvo) for CH and CX got simple straight rails even without spread at the front.

Yup. We too hope the time has already come.

Interesting information. And funny and pleasant fact about the transmission. The fan looks Ok, some trucks and other vehicles used similar styles which look asymmetrical. But they're sure symmetrical by evenness of pressure applied to blades to have the resulting force pointing the shaft exactly in the center. About the T-stat follow Geoff's explanations. I understand what he means but not able to confirm or argue since don't have time to figure his points right now (actually there's a need to follow the tube arrangement). In your case you might just google "thermostat for B-model" or "thermostat END-673" (basic engine for a B-model diesel truck), look for pictures and than continue looking for its sizes and looking for the particular part on Ebay (they have pics there too for the most time). Speaking the model of the truck it could be seen from different points. What would you count as a model? The 1st case in the chassis. Since it determines what a rig is on my mind. Determining the chassis model you go looking for the chassis number - the stamping on the rail. If you found it you can send it to Mack museum for learning more detail. If you can't find any stampings you determine the chassis model by its look. Relating with photos of different truck. The forum is of help for that. If you associate the truck model with its outer look so relate the look. Yours looks like B-61. There could be variations such as B-62 (gas engine) or B-42 (lighter chassis) etc. All in all you may have a truck in stock factory configuration or factory model with some components swapped or even a truck assembled from parts of multiple different rigs. Determining what it actually is you determine each component. The 1st is the chassis (again) and if you determined it the museum could provide you on the rest and you than relate that with what you have. That's the straight and the easiest way. If that wouldn't work Ok, you are surrounded by the crew of specialists to answer the most of your questions

Here's some info on how the later thermostat is looking. Check out your housing, it's possbly supposed to suit a similar one.

Welcome to the group and that's definitely an interesting find you located! Congrats on the purchase! I'm personaly one of those folks who see no other way of fixing an old rig than restoring it to the original condition but now that's your own truck so your plan, your desire and your elbow grease and pay checks What I would advice is to not start with tearing everything apart but first throughly plan the upcoming actions and than start working with limited amount of certain parts. For example fix the doors than start arranging interior parts. Without disturbing chassis and even not removing the cab. You may also overhaul the pick-up along the components which will stay in place. It happens in many cases that you run out of budget or interest and than unfinished project goes on a back burner or even to scrap. I definitely wish you another perspective and hope to see the end result posted on the forum some day. But planning shedule and divide it to separate steps you could stop at any or correct plans never hurts. Vlad

The thermostat you need is a typical END-673 (B-model engine) part by the looks of the housing. I don't have any to check the size unfortunately. Those are common are off a E6/E7 engines which were used in Renaults either but I'm not sure on similarity. I will look for the sizes of the lattes the other day. And there's a funny thing. When I planned a trip to Turkey in 2023 I asked my Dutch friend (a "specialist for Macks in Europe") on any remarkable trucks. He noted a few (2 or 3) including a B-model parked near a certain restaurant as a decoration. The place was far from that my particular paths so I didn't go checking it. Now it looks like there's no reason visiting that restaurant for me

And regarding your question on the sleeve/piston gap. I don't know if anybody already answered it since some while passed by since you asked. I found a figure of 0.004"-0.007" in a E6 4V book. "Piston to liner clearance - 90 degree from pin axis" printed there. That engine uses almost similar sleeves you purchased. Pistons are not the same but I doubt on notable difference in thermal expansion between the two. 4V could be a little bit hotter providing 350hp so slightly lesser figures could be foreseen in your case. The same for light duty use without hard pulls of heavy loads.