doubleclutchinweasel

"Drill" "Extra Hole" Keep it clean, 57!!!

Thanks, 57. I really just need the tach...and a cable. All my other gages are pretty good.

Would this be the double check valve which feeds the trailer brakes? It is supposed to port air to the trailer brakes, regardless of whether you operate the foot valve or the trolley valve, but prevent air going to the tractor brakes if you operate the trolley valve.On my R, it is attached to the treadle valve and incorporates the stop light switch.

Oh! I completely forgot the B-model flatbed in Police Academy!

My treadle pivot pin has frozen to the aluminum frame, and is pivoting on the pedal. Works fine, but can't take it apart to get to the last nut holding the treadle valve onto it. When I replace the valve, I plan to just replace the pedal assembly, too. Sort of get it all while I'm in there. You know? I have looked a a gozillion pedals, but am not 100% sure what the original pedal angle is on the R600. The pedal I can get most easily here is the Haldex-Midland. Their SN-4017A is a 45° pedal. The old Bendix catalogs list a whole slew of pedal angles...up to 56° or so. I can only estimatecthe angle of the old pedal, as the floor is no longer flat & the pedal bumper is well worn. Even the pedal shown at Watts R-model store LOOKS like the H-M aluminum one. Anybody here actually gone through this already? What pedal assembly did you use? I like the look of the old perforated steel pedal, but don't know if I can find one. Any shared experiences and advice would be appreciated.

The gold dog in those days meant the truck had a Maxidyne engine. A chrome dog meant either a Thermodyne or a non-Mack engine, like a Cummins. Somewhere along the line, Maxidynes became "EM" and Thermodynes became "E".I drove a couple of earlier R-models with the 6-speed 2-stick trans. The 107 was direct in high. The 1070 was overdrive in high. Nicest thing about that box was that you had 5 reverse gears. Super nice when trying to back up out of a muddy spot! After growing up on Quadruplexes, it took some getting used to! There was one of these for sale in Charlotte a while back. Had a Cummins & an 18-speed Fuller. A Ford-Hendrickson air ride rear frame was grafted on just behind the cab. Does that make it a McFord?

Red U or DM in the background. Good eye, Vinny.

An L-cabbed B is a nice find. Saw one at Knoxville show last year on a Pete chassis. Most folks didn't realize what it was. He even widened the front fenders to cover the wider-track of the Pete front tires.

Well, that could definitely be something worth looking into! Let us know how that works out for you.

Did you just say "good" & "steering wheel" in the same sentence? LMAO!

Only thing that confuses me (well...not the ONLY thing!) is he says it only does it with a trailer...any trailer...attached. if not for that, it would pretty much have to be a QR valve.

Colors don't matter at all...just as long as you keep that PATTERN! Love that style. I'd do yellow with black fenders. But, I tell everybody that!

This is THE standard R-model dash from the 1st generation trucks. Nothing unusual about it. Looks exactly like my 70. I'd sure like to have a complete gauge console like this as a spare. Anybody got one with good gauges in it?

Find anything yet?

Yeah! Exactly what he said!

Well...I'll take a shot! I'm sure somebody will let me know if I'm out to lunch.The original R model came out in 1965, built on the same frame as the F models, which came out in 1962. Look at a cabover F model, & the steering box looks pretty normal. When Mack put the R & U models on that same frame, they just changed the steering tube & left everything else the same for commonality's sake. As far as the outside placement, I have no clue. Maybe a western Mack thing?

Superdog, you're my hero! Thus sayeth the Weasel

Excellent models, Vlad! 20" tube-type and 22.5" tubeless are the same size ("small spider"). 22" tube-type and 24.5" tubeless are the same size ("large spider"). Whole number sizes are tube-type. 1/2" sizes are tubeless.

The treadle valve COULD cause this. But, it is highly unlikely it would cause problems only when a trailer was connected. Leaking trolley valve can definitely do it. Might be able to unhook the service line to the trailer and listen for some air leaking? Of course, I've been wrong (uhhh...twice) today already.

Any air valve should trigger the splitter, like Superdog said. It just has to be plumbed in properly, or else it might work backward! A TRD-72 SHOULD be a 10-speed Duplex, direct drive. That is, 5th gear should be direct (1:1). For a 9-speed, which is an overdrive model, it SHOULD be a TRD-720. The "0" generally means high gear is overdrive. But, I have heard folks argue over whether they had a 9 or 10. Every 9-speed I ever saw was an overdrive. But, hey! We ARE talking about Mack here! Anything is possible! The "72" is the basic 5-speed box. It could be coupled with a 2-speed rear section for a Duplex (TRD), a 3-speed rear section for a Triplex (TRT), or a 4-speed rear section for a Quadruplex (TRQ). There are also variations on the basic numbers, indicating different gear ratios and torque capabilities (like a TRQ-720, TRQ-7210, or TRQ-7220, indicating 3 different versions of a Quadruplex). Direct drive setups typically have as many gears as it appears (5 X 3 = 15 or 5 X 4 = 20). But, when you add the overdrive 5th gear, some of the combinations are duplicated, so they discount those (5 X 3 = 13 or 5 X 4 = 18, where a couple of the gear ratios are essentially the same). On an 18-speed, for instance, LO-SPLIT 5th is essentially the same as DIRECT 4th, and DIRECT 5th is essentially the same as HI-SPLIT 4th, So, those two don't really count. They're there...I've used 'em. You just need to not down-shift or "nothing-shift" by accident! Nice thing about the TRQ-720 overdrive Quadruplex (or equivalent TRT-720 Triplex) is that you get 2 overdrives (HI-SPLIT 4th and HI-SPLIT 5th)! Enough jibberish? Sorry! Here are some shift plates. The 10-speed and 15-speed shown are DIRECT models. The 18 is an OVERDRIVE model.

The car changed at the end of Dirty Mary & Crazy Larry, too.

And, of course, there was always T.J. Hooker holding on to the hood of the car! That's about as bad as it gets!

I've never been out there. But, I remember somebody posted a fast-forward video of the road, set to take the same time as the song. I don't recall seeing a low bridge either. Is that what we call "poetic license"?

Ah, yes! The C! Introduced in '63, I believe. Not a bad idea...short BBC. Good engine options. Might have lasted longer if the U & R hadn't come out in '65. The U was aimed pretty much at the same market, I believe. Still, seeing a C in person is pretty cool. It's just plain different! Does have some interesting character.

Weird. I found it just the other day. Guess they pulled it! So, just for that... Wolf Creek Pass (Bill Fries, Chip Davis) Me an' Earl was haulin' chickens on a flatbed out of Wiggins, and we'd spent all night on the uphill side of thirty-seven miles of hell called Wolf Creek Pass. Which is up on the Great Divide? We was settin' there suckin' toothpicks, drinkin' Nehi and onion soup mix, and I said, "Earl, let's mail a card to Mother then send them chickens on down the other side. Yeah, let's give 'em a ride." [Chorus] Wolf Creek Pass, way up on the Great Divide Truckin' on down the other side Well, Earl put down his bottle, mashed his foot down on the throttle, and then a couple'a boobs with a thousand cubes in a nineteen-forty-eight Peterbilt screamed to life. We woke up the chickens. Well, we roared up offa that shoulder sprayin' pine cones, rocks, and boulders, and put four hundred head of them Rhode Island reds and a couple a' burnt-out roosters on the line. Look out below; 'cause here we go! Well, we commenced to truckin' and them hens commenced to cluckin' and then Earl took out a match and scratched his pants and lit up the unused half of a dollar cigar and took a puff. Says "My, ain't this purdy up here." I says, "Earl, this hill can spill us. You better slow down or you gonna kill us. Just make one mistake and it's the Pearly Gates for them eight-five crates a' USDA-approved cluckers. You wanna hit second?" [Chorus] Wolf Creek Pass, way up on the Great Divide Truckin' on down the other side Well, Earl grabbed on the shifter and he stabbed her into fifth gear and then the chromium-plated, fully-illuminated genuine accessory shift knob come right off in his hand. I says, "You wanna screw that thing back on, Earl?" He was tryin' to thread it on there when the fire fell off a' his cigar and dropped on down, sorta rolled around, and then lit in the cuff of Earl's pants and burned a hole in his sock. Yeah, sorta set him right on fire. I looked on outta the window and I started countin' phone poles, goin' by at the rate of four to the seventh power. Well I put two and two together, and added twelve and carried five; come up with twenty-two thousand telephone poles an hour. I looked at Earl and his eyes was wide, his lip was curled, and his leg was fried. And his hand was froze to the wheel like a tongue to a sled in the middle of a blizzard. I says, "Earl, I'm not the type to complain; but the time has come for me to explain that if you don't apply some brake real soon, they're gonna have to pick us up with a stick and a spoon." Well, Earl rared back, and cocked his leg, stepped as down as hard as he could on the brake, and the pedal went clear to the floor and stayed there, right there on the floor. He said it was sorta like steppin' on a plum. Well, from there on down it just wasn't real purdy: it was hairpin county and switchback city. One of 'em looked like a can full'a worms; another one looked like malaria germs. Right in the middle of the whole damn show was a real nice tunnel, now wouldn't you know? Sign says clearance to the twelve-foot line, but the chickens was stacked to thirteen-nine. Well we shot that tunnel at a hundred-and-ten, like gas through a funnel and eggs through a hen, and we took that top row of chickens off slicker than scum off a Lousiana swamp. Went down and around and around and down 'til we run outta ground at the edge of town. Bashed into the side of the feed store... in downtown Pagosa Springs. [Chorus] Wolf Creek Pass, way up on the Great Divide Truckin' on down the other side Wolf Creek Pass, way up on the Great Divide Truckin' on down the other side Add song meaning Not sure what to write? See exampleExample Song MeaningsHere is where you can write about what the highlighted lyrics are about and their meaning. An example would be... "'Post code envy' describe the envious feeling towards the people who can live in expansive area with well known post code (such as 90210 for hollywood)." You can also add pictures, videos and links to other sites using the links at the top of the box SUBMITThank You For Your SubmissionYour song meaning will appear once it has been deemed awesome byour team of wizards. Add more meanings to earn more points!