Vladislav

Outer bearings are 45280/45220 (set 413 as mentioned above) Inners are HM212049/HM212011 (set 409) Stemco seal either 383-0139 or 383-0239. There's a wear ring of 4" OD the seal works against of but you don't need refreshing it if use unified Stemco seals.

Congrats on the purchase! Firetrucks are cook stuff on my mind. I have never had any relation to them myself but definitely would be happy having a classic one in running condition. Maybe some day which hasn't come yet? As for removing the firebody I would keep it in place as was suggested above multiple times. And for transporting the tractor a trailer might be hooked up. Going further this way the tractor might be stylized to fire service too. As Dane Druno made to a R-model in the FAW5731 axle thread, turned out very nice on my mind. Ok, as long as the truck is a red truck with white stripe and the tractor is already a blue tractor with white stripe just a blue trailer would complete the case.

Valve seat? That's not a valve guide. As I was told in a local shop they use liquid nitrogen for cooling seats. And although valve guides, surface grinding and many other jobs are made by guys the seat installation is done by the chief himself.

Paul, I love ya!.. About every other morning after waking up I remember the words of your father said. Of how wierd that would be... and so on. Than after 10 or 15 more minutes I force myself to stand up I would definitely like to have much more energy for the day since I have tons of plans and ideas on turning stuff over or inside out. But unfortunately I'm short on energy and always was from the times I remember myself. Never liked gym excersizes and preferred to tinker with small stuff. Slowly and patiently. This way I just try my best doing every day as much as I can. And also remember your advice on keeping small steps. About every other time I need to kick myself for a few more extra steps Vlad

My guess is the outside plate is aftermarket (repair-reinforcement). I saw many Superliner chassis and also R-models with Neway and have never seen any arranged that way. The inner plate (spicer) is the most probably factory. To compensate possible use of the inner rail. My 1988 R-model Neway arranged particulary. Single frame rail with two holes for the rod bracket attachment and 1/4" plate at the inside. ...With hard cracking near the bolt holes. So I'm looking for options for a "nice" fix. Probably will also fabricate an outer plate but less in size to look smoother. And I don't plan to carry loads by the truck.

Welcome to the group! The truck looks very nice! I'm pretty sure a little bit of touch up and she'll be a bomb! Vlad

Hi Dave, No, unfortunately no big move along the R-model. Recently I'm focused on my WW2 NR-model which is closer to the finish (I'm even afraid to use this word!). Also had to rebuild the cab and that have turned out into even huger entertainment than the one for the R. I probably should post that job either but short on time so far. The R has the most of engine parts (E6-350) ready to put back together and I hope to provide this job during the upcoming winter. So all in all plenty of playing with parts but still not a moment to post pictures of finished trucks.

What a great look of the roads was in those days! Now the times are different, different rigs. Thanks the great for pictures mate

Congrats on the purchse! The truck looks cool and definitely has plenty of potential! The configuration is my taste's best. If I could chose a B-model to have in collection my top preference would be tandem B-75 with a B-model cab and factory V8 Mack engine! Vlad

Pre-war Mack BG (or BJ or so) was interesting and in restorable condition. At least as it seemed to me by the pics. Sure you can restore the most any truck no matter how hard it was ruined, just depending on the efforts and expences. But particulary that rig is quite rare and of not very complicated design.

Mack changed the crank and other heavy loaded parts when they went to Maxidyne from ENDT673. Which was of Thermodyne family which was introduced to the market in 1938. Much higher torques produced by Maxidyne required much more strength of the engine components. I don't know when Econodyne was put on the scene, probably is was a kind of mod of Maxidyne engines but with more common fuel settings. The difference was mostly achieved by different governing in the injection pump. Thinking about the shapes of the governor inside parts it looked to me like the governor had ability to push fuel rack at low revs so the engine would pull. Ok, I'm not almost sure on the physics but if you want torque, actually - forse, for a vehicle to pull load you need fuel to be burned. There's no magic in the world. So that fuel must be delivered into the cylinders. And if you don't tread the gas pedal hard but the truck pulls well it means fuel is supplied in sufficient quantity some how. To me it seems the governor is making the trick while you hold the go pedal relatively steady. The second big point (mentioned in discussions regarding Maxidyne engines) is the turbo. Definitely if you want to burn fuel you need air. More fuel - more air. So turbo must do its job. It was said Maxidynes had different turbo than Econodynes. Possibly. As of me I'd like to know what was principally different in them and how big that difference was. Since I read someone's posts from time to time when a certain common turbo was installed onto Maxi engine and against expectations of experts of the community the truck gets driving fine. Injectors could be different (and they're different) since the combustion process goes at different revs so optimal spray pattern is different too. Which could be achieved by different crack pressure. There also could be difference in the shape of cams of the pump cam shaft. Initial plunger speed may be different in different engines and the injection stroke may be longer or shorter providing different intensity of combustion. Timing angles are items from the same basket. So when you want a certain engine to be set for a certain specific performance many aspects may be performed.

I'm afraid your count is 5-10 timey wrong. Just ask me how I know

Mack went up to 2 valve E6-350 indeed. But those were not Maxidynes. Low torque curve was sacrificed for higher HP. And a bit higher highway fuel efficiency. I have that kind of engine in a MH of 1984.

Two thumbs up!

Sorry to hear. Not only the trucks are getting older. Hope and wish the fix will work out well.