randyp

Something about that ROPS that looks a little...............big. Is everything bigger in Texas?

LOL,,,yeah David,,everythings bigger in texas and usually a lil oilier

Looks home made to me. The only rops on Galion, and Champion graders around here were formed round tubes.

Rob

yeah Rob, you are correct, it still has the original umbrella holder on the side, the rops is homemade, and a pretty stout one at that, its about a late 68 or early 69 model with a 3-53 detroit, 3 speed forward and 1 reverse manual, all hydraulic except blade pitch is manual by loosening a couple of bolts. Im gonna give it a little restoration, I do a lot of driveway and farm road jobs and i liked it for its compact size, price, and old school look sitting behind killer B. I already knew my mileage down and back Rob, fueled before i left and when i got back refueled and Killer B got 7.8 MPG going down empty and returning loaded, it seemed a lil hard to believe, i checked and rechecked, but thats what it got, I thought that was pretty good for a naturally aspirated engine. LOL,,the guy in the pic with killer B's hood up is the guy I bought grader from and he was slobbering over truck so much he wouldnt move so I could get a decent picture. Few lil things and leaks to fix on grader but its pretty tight, will let you know how it goes,,later,,,Randy

Made a 200 mile round trip in killer B yesterday and drug a 1969 Galion 503A motor grader home, B performed like a champ too,,,randy

killer B moves equipment every day and does outstanding job

anyone ever heard of a HALLA Excavator,HE220LCE, it has a 6 clyinder cummins,50,000 pounds looks to be a good machine,anyone know where and who makes it. thanks Ron

have seen a lot of hallas but dont know ahything bout them,,,kinda sounds swedish though

A buddy of mine swears by JCB.......he likes the power it has. It does have lots of power, but it seems it will tear itself apart if you don't know how to run it. Hitachi's are great machines too.

What brand engine does JCB have? They are great looking machines and seem to be reasonably priced, but parts availability deal kinda scared me off, plus i dont need anything to tear itself apart,,,thats kinda my job,,LOL,,randy

For dump truck use, Mack Camelback is superior to any other suspension out there.

.

A HEFTY AMEN!

Now keep in mind that I'm in Cat's home stomping ground but JCB has not been able to get a foothold in the area. I've talked with many operators that have ran them all and they say Cat is the best and will outlast most of the european and japanese machines by at least twice.

I know that when I went to purchase a used backhoe I looked at a 410B John Deere, a 580E Case, a comparable JCB, (214, I think) and a 416B Cat, all used with around 4500 hours on each. These were all private owned machines. The JCB machine was cleaner physically than any of the others but was plain and simple "worn out". None of the tractors had ever ran a breaker, and only the Case had been welded upon. The engine in the JCB was Perkins, which Cat now owns.

The Case machine was purchased due to rapid parts availability and pricing. The Cat stuff was exhorbitant, (as usual), the JCB parts were not only a "wait till we get em" type arrangment, but the cost was above exhorbitant and there is only one dealer within about a hundred miles. The Deere parts were about on par with the Case machine, but the dealer's service department is not quite as friendly as the Case dealership. When I need help, or a special tool for repairs I could "borrow" it. I had purchased my skid steer from them also.

I've heard their excavators are about the same as their backhoes but I have no experience with them. I've seen a lot of new ones in municipal use but rarely see an older one except on farms.

No help I know but typical of myself, I know nothing.

Rob

well,,wound up buying EX 120 hitachi, 2400 hours, bought a new thumb to go with it, all seems pretty tight, just got through dragging it home with killer b, will let you guys know how it goes,,,thanks,,,randy

Hello All

I am looking to buy a R model. Always have liked Macks but never had the money to buy one, but now I do. Can spend about 5k. In regard to the 5+4 transmission. Is it possible to shift the 5+4 as only a 5 speed. Are all the 5+4 made by Mack. I really want a truck that is ALL Mack. Thanks

I may skip a gear on mine every now and then empty, and sometimes even loaded if I just broke over a rise or something, just depends on the moment and whether i can keep RPMs reasonably good, have to agree with HK, dont be lugging too much or you will pay for it later, all works better to maintain that RPM band...Randy

Im new on here and need some advice on what to look for when searching for a B model project.One of my main concerns is the gearing and road speed.I hope to find a single axle and use it for local shows and maybe tow my sons race car trailer once in a while but really Ive always loved B models since my dad owned a couple when we were kids and Im looking forward to having one to tinker around with.I read where some were geared lower maybe 48-52 mph and others 60-62.I looked at a long wheel base truck with a quad but didnt know what to look for but when I go back Im going to write down what numbers I find...Thanks PS what does 613x mean...I saw it on ebay

I pull an excavator and dozer around with a 61B, tops out bout 57 or so, 10 speed duplex and its so much fun moving it makes me want to finish jobs real quick so i can move again so I guess its really making me some money. Whatever B you get,,,enjoy,,,Randy

Sounds like you're talking about the Rolling Stones (Keith Richards especially). lol.

LOL,,,yeah,I will just get a complete assembly,,thanks fellows,,Randy,,,(My daughter has a guitar pick Keith Richards came off the stage and handed to her at an austin texas concert)

Randy:

The Tach drive is not on the inj. pump, it is under the pump, toward the front, sticking out of the block, pointing upward. It will have threads similar to what you saw on the back of the tach (but larger) where the tach cable screws on.

Hope this helps.

.

yeah HK and Rob, got out there this evening looking under injector pump,,lo and behold there it was sticking straight up, traced cable up to air cleaner tube climbed up on front tire, looked behind tube and there it was all wadded up and tied with tiewraps, sorta hidden in middle of engine. Wadded up like that cant be good for cable specially old cable,,anyway got it all straightened out, got all the oil in it i could, still hand clamps in 2 places on it to give it a good slow curve to firewall,,hooked it to back of tach,,,,no work,,I guess it must be broken somewhere,,I may unhook it from tach in the morning and see if it spins,,but i doubt it. I guess i need a new cable dont i Thanks for all help and input HK and Rob,,,later,,,Randy

Hi Randy you have a mechanical tachometer. If you cannot find the jacket with a .104 square end on the protruding cable, you are missing some parts. These can be had from most any speedometer shop and sometimes aftermarket parts suppliers. The jacket will have either a smooth outer end that is held of the rear of the speedo by a friction clip, or a knurled knob that will screw onto the threads in the rear of the speedo housing. The other end of the housing attaches to the engine under the injection pump on the rt. side of the engine. This will be a knurled knob that has a round end crimped onto the cable with a tang one the end. This tang will slide into the gear on the engine that meshes with the auxilary shaft to be driven. It is the same setup used on the B series truck. It is also very common to failure due to age.

Rob

Thanks Rob, yeah, im missing the entire cable all the way to the injector pump, on the back of the tach it has threads for the cable to screw onto. I havent checked out the end at the pump very thorouly yet, did find the hole in firewall where they removed cable though, thanks for the help, i just gotta start scrounging and find some parts. Really appreciate all the help,,,Randy

Is that a mechanical, or electronic tachometer your asking about?

Rob

I took cover off top Rob, looked at back of tach, must be mechanical, cable is completely gone from back, no trace of it even hanging or anything, I turned little brass knob where it hooks in and tach registers(I almost did 100 rpm with my fingers)I guess i need to get a new cable, only saw one hole on back of injector pump where it may screw in, no other wires or place for wires on back of tach,,,thanks,,,Randy

Where does the tachometer connect to the engine on an 86 R688 ST? Engine was put in before I bought it and previous owner said it never worked after that, its a 300,,,thanks,,,Randy

Sometimes it "pays" to not burn the bridges behind you.

Rob

yeah rob,,,never ever never burn bridge behind you,,matter fact paint it and put up safety railings before you leave,,,Randy,,(got cab air bags on r model rob,,,swwwwweeeeeettt!,,,

Amen and I'm not complaining, the job offer actually fell right into my lap.

I had a girl friend one time who said jobs were always falling in her lap, found out she was a prostitute so i let her go,,,only visited her once a week after that (and stopped kissing her) randy

Use a porta power to elevate the rear of the cab and then block it in position. It is a LOT easier to do with the cab up high rather than squatting in the rear. There are bolts on the top and bottom that must be removed and the bag will slip out. There is tension due to them being rubber composition, but the job can be done with a little effort.

Rob

mission accomplished, wasnt too bad,,,feel like im riding on a cloud now,,,thanks all,,,randy

Those transmissions suffered from the "range shift self destruction syndrome", so that later shift pattern was designed to allow the range shift to take place at a lower speed, thereby putting less stress on the range shift synchro.

If he's looking for an on/off road transmission, that rules out the 2050 or 2060, as they don't have enough low gear reduction for that.

.

ah and alas HK, once again you are on the money bout that, I have the distinction of actually destroying a range synchro long long ago in a galaxy far far away, it wasnt pretty,,,keep us straight and informed HK,,,,later,,,randy

I can side with slow on these trucks. I would however probably stay with a Mack engine as I am much more familiar. They can also be had at much less expense. That is just my opinion as I know virtually nothing more about Cummins engines. I also favor a Mack transmission and would probably not change the duplex out because I like mine.

I'll be interested in your old parts when available as they would be used in another restoration, (I don't sell anything myself).

Rob

Well Rob, may not be any parts for you after all, I made the longest drag to date with ole killer B today, 48 miles one way, and she just purred all the way up and down the hills with komatsu dozer riding her. I was a little wore down when i got there but it sure was an enjoyable trip, may just keep her doing dozer duty after all,,,randy

The only one I've dealt with was a tractor. I wanted the air ride setup so I removed everything. It was a lot easier to remove the crossmember from the frame once the cab was clear but taking the bags, (both blown) off wasn't that bad with nothing in the way.

A hoist frame would definately be a bitch to work around.

Rob

Thanks Rob and HK, Im gonna get started on that,,,Randy

That's more than likely a factory air ride cab setup, although I can't say that for sure without actually seeing it.

The 1991 RB that I had was equipped with a setup just like what you describe. I had to change bags on that one a couple times and it ain't really a fun job.

Regarding stress on the front cab mounts, the R models with air ride cab use front cab mounts that are able to "rotate" as the rear of the cab moves on the air bags, so there is no issue with the front mounts.

thanks HK, yeah, I was looking at the front cab mounts, they do look like they are designed to rotate a little, I just gotta figure out how to get those old bags out, thanks for the help,,,randy

Randy if yourn got one of those astro seats ya don't have anything to worry about. Or if yourn still saved yourn beanbag from the 70's then You'd tha Man wid da plan.

mike

Thanks all, gotta go thinks boout some all dis yall hit me with then now,,preciate all advice,,,,randy(going out to look at froont cab mounts and get old beanbag out of barn)

thanks, how bout it HK or any and all gurus, it kinda looks like it may be aftermarket to me,,,thanks all,,,randy

I think that Herb is correct - the 1st Macks with "optional" seat belts were the R models in 1966, and all of the various derivatives of that cab type. I don't know when they became standard equipment.

I have a couple of B models with aftermarket belts, but I have never seen any with factory belts.

Paul Van Scott

Thanks guys, I had a hard time with a state trooper who just didnt wanna buy into no factory seat belt story, he wound up on his cell phone getting another ruling, finally got off phone shaking his head and said your legal, you can go, but i dont like it. While you are here, Vanscott, i bought a 1986 mack R-600 dump truck with 14 ft. bed. Behind the cab across the top of frame is big piece of steel,,welded to front of it extending under back of cab it has 2 small air bags with a short shock absborber on each side, there is a cover over it in cab of truck with 2 large bolts looking like they praobably go through center of each bag. Leveling arm is unhooked right now, when i moved it to cycle air to bags (cab is sagging back away from hood right now),,both bags are leaking pretty good, i guess thats why they had leveling arm unhooked. My question is how hard are these to get out and replace,,go from inside cab at top or underneath? thanks,,,,randy