Vladislav

The MH chassis-based RWI - what it actually was?? A RW2 with earlier headlights? Also seems strange since Cruiseliner kept its original Western split chassis to the end of production (at Macungie) and RW1 had similar chassis. So what is the truth? Was RW1 with its original not MH-based chassis ever produced at Macungie or not?

865 and 866 differ by the look from E9 having narower valve covers since they had only 2 valves per cylinder. Usually easy to recognize. There were a few experimental (or a short run) R700's with what Kevin mentioned as ETAZ-1000 or ETAZ-1005 V8 4 valve engines which actually were (as I figure) a pre-series variant of E9. Looking the pics there was no aftercooler but 4V versus 2V is a keystone difference on my mind. Someone once posted on here a couple of pics of such truck which he was going to buy as I recall.

Was RW1 ever produced at Macungie???

Even a little sensation to me. Never knew SGT had Superliners. Thanks, very appreciated !

The engine looks like 2V E6-350 which was installed in MH's before 1985. It must have a chassis mounted intercooler in front of the main radiator. Very reliable engine and the most of parts are easy to fing and cost reasonable. The solenoid looks like a main shut off relay. R-model has similar part installed under the dash. It gets on when you turn the ignition key and supplys power to instrumet panel gauges and alternator. Probably to other circuits either. Some outside lights (or all?) and engine starter are supplied straight passing the relay. I didn't look for the relay in MH since didn't have a trouble but my R-model has it inoperational from time to time. Usually after the truck is parked for too long. Actually it gets stuck and you have to turn the key multiple times or slightly hit the relay body. Once I bought the truck the previous owner hitted it every time he switched the ignition. I took the solenoid apart, cleaned and greased it and it turned out troublefree. But in a few years it started remembering me his existance.

Not that easy deal. MH plunger is 4 or 5 times longer than one in a R-model. I had to remove all the top part off the threadle valve and play with it in vise to get the plunger free. Worth to note my parts looked better than in this truck.

Very nice views including the truck and the scenaries. Also interesting to see some NZ-produced Superliner features. Thanks for sharing

Wow! I can say you digged out a very interesting detail. Alastair must be excited Seems like you're almost right. My R688 of 1988 has rad sitting lower in the chassis being attached not almost the way you described yourth (I suppose you just didn't figure those points completely) but on a pair of brackets which are a thick bent still bolted to the inner side of the front spring brackets. They're not at the top of the frame rails but just a lil bit lower. Actually I don't expect to see anything else on your R and RD688 but I can never be 100% sure. My RD690 you shared a pic of the front bracket of indeed had a different rad which seated higher off the frame. It was not exactly the same style as in your truck but also had a pair of legs it standed on the crossmember. Actually there was a rad support bracket the legs were attached to. You can see it hanging down in the picture when the truck was still looking as a truck. The crossmember also holded the front of the engine by a kind of shelf welded to its inner (rear) side. The previous owner stole the engine to put in his Freightliner so he took the crossmember off for the install. The rad bracket was bolted to the front (face) side so it stayed hanging on the rad which occured laying on the front frame rail ends. Of other interesting things I found out RD690 rails kept original holes where the bolts were holding Camelback stand. From the pattern it's seen that the stand was in the lower position i.e. the excessive rail heigth was put up. Still a question to me. Currently I have a thought on the matter but need to observe the frame rails which are laying along a wall of my shed to possibly get the proof. Will share as soon as i do.

Easy deal if you take the assembly apart, clean, put grease in it and put a good solid rubber boot onto the top of the plunger. The boot is the same as for an R-model, Watts have them in stock.

The cab lift system contains a pump which is mounted on the RH muffler bracket. It's hydraulic. Operates like a common bottle jack. You use a rod to pump and turn a latch to release pressure when lowering the cab down. When you pump the latch must be in the close position (don't remember, probably clockwise). If no action could be shortage of oil (too probably after a long storage). The filler plug is already on the pump and you can use ATF and even used to get the system operational. There's no catch. Cab locks are hydraulic and mounted below the cab airbags. When you start pumping the jack first makes the locks get loose and after that oil goes to the lift cylinders. Locks could be stuck (in theory) but you will see that if the cab tries to go up and locked near airbags. There's a security support plank on the right frame rail at the front below the cab, use it when the cab is raised. The brake pedal gets seized in the aluminium base. There's a steel piston inside a cylinder bored in the pedal base which pushes the threaddle valve when you push the pedal. You need to remove the base from the threaddle valve and get the piston (actually a tappet) free. Hitting, heating, WD40 penetration are the ways to go. After it's loose sand off all oxidation from it and the cylinder surface and apply grease. The base and the tappet are NOT interchangable with R-model (RW, RD, DM etc) but unique to MH. And too probably not easy to find. The threadle valve is a standart brake valve, same as in R. The big pedal base with MACK script has tendency to corrode due to moisture in the floor mat. A difficult to find part either. Also a weak point of MH is the gear shifter assembly. Could be found broken down or worn out. Front air tanks could be found rotten through where the aluminium steps are attached to them. Windshields and front grill are difficult to find parts. Good luck on bringing her back to life. Vlad

Thank you for the credit My current option is using a pair of rails my second R holds on. Those are stampless and exactly the size I need. But they aren't really nice at the rear end, have some cracks over the Neway brackets. Good thing the cracks are in the web not in the flanges so I hope I would weld them up with no issues in the future. Another matter is I'm way from being excited parting out my only complete and running truck. I will do if no other option is found to the moment. But I also figured I need some other big jobs done such as the engine and two big chassis crossmembers. Also the cab interior and wiring are on the list. So now the plan is to provide as many of works as I can aside of the frame rail story. And when 90% of the components are ready I'd part out the truck to get the rails off, fix/blast/paint them and start assembling everything back together. A trouble to find such rails is they're quite long for an avarage R-model. 220" wheelbase and 60" Canadian spread. From what I figured out there were not many American R-model highway tractors with sleepers and such long wheelbase as a follow.

Looks like they are. And the rear ones also. I was wondering the cab mounts position but after you investigated the rail goes down there that's not a problem either. The problem could be the rears since mines are Neway and the lever brackets fit to the rails by the lower flange. I suppose RD's with Neway are a seldom view if any but that story must have working solution in RW700.

I'm not in the same ballpark but in the same kind of since I'm overseas. For PAI needs I started asking local truck part dealers and found out multiple places which had PAI relationships and straight supplys with reasonable prices, at least cheaper if i order in the States in a on-line store and organize the shipping myself. The only issue the guys are lazy identifying parts so I have to give them particular PAI numbers.

Upps... That's what has me scratching my head. And seems like it has a tendency to spread like infection. My R688 is 1988 and has both front and rear brackets similar to both of your trucks. The axle is FAW537, 12000# if I'm not wrong. # taper leaf front springs and rear brackets cast of aluminium. The pics are what my RD690 donor truck had. Difficult to figure all original specialities since the truck was modifyed by installing of a front drive axle and the rears put almost below the main rails as a section of a DM (judging by the rail heigth) chassis. As you can see the rear brackets were generally similar to R-model style but slightly different and cast iron. The front ones were completey another story. The hood attachment was also another but that makes sence since it was for a newer style square hood. Now seems it worth to me to measure the heigth of the frame rails at the front and relate to your figures. So far I expect the same range figures but it's a guess. The rails are separated and stacked aside a barn. So very easy for observations. You're right. Those RD rails are absolutely decent. That was a double frame and the truck spent the most of its life at extreme North with about no public road driving being an oilfield equipment carrier. So no salt and probably not much driving at all. But the VIN stamping doesn't suit my needs and the front spring bracket differences adds salt to the dish.

Jim, isn't CMCAC a Chassis Mounted aftercooler? I always thought that and expected that attached onto the chassis in front of radiator.

Very exciting Good luck on a smooth job!

Lengthened R-model hood is described like starting from 1982. Does this mean that CMCAC took place starting from that time either?

Very appreciated. Please also check the bogie stand position.

Like this? More looks like it was a winterfront conteining two bars.

This one was attached straight onto the aftercooler. So I expect it appeared together with it. Starting from 1984 I guess. The models are usually 688 and could also be 690.

One more of the kind in my 'puter. Hope none of those watermark holders will have a fan switched on.

You should look for a local PAI/Excel dealer and supply them with the above numbers. Looks like PAI official web-site is Reliable Industries. But I'm not sure they sell straight. Vlad

Couldn't that be a R-model with butterfly hood? Mack chassis (frame) brochure indicates RD (taller) frame railf for an R-model firetruck

Depending on a way you count it. RM has similar to DMM chassis rails, front axle setup and transfer case. So actually all the powerplant and the chassis. Only the cab was used off a R-model and I suppose it was fitted on its own RM mounting brackets.

Looks like there were DMM's with butterfly hood and even non-front driven.