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Everything posted by doubleclutchinweasel
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That reminds me of a time when I was still too young to drive. Was on a clearing job with my Dad. We were waiting on the fuel truck to show up. Seems like it was a C60 Chevy. Waited. Waited. Waited. He decided to back-track and see if the fuel jockey got lost or stuck somewhere. Found the fuel truck butt-down in a creek, having fallen through a covered bridge. Nose was just coming out of the bridge when the drive wheels found the weak point in the middle. Splash! Nose up on the edge of the bridge, tail in the water. Seem to recall it took a bit of doing to get it up out of there.
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"If you've ever fished with a shotgun..."
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Pulling injectors on a 673
doubleclutchinweasel replied to Craig N's topic in Engine and Transmission
Is the oil pressure relief valve boned and pumping stupid high pressure up there? -
Used to work for a guy who gave the worst directions! He’d tell you to look for some cattle and turn right past them. If they moved, you were hosed! Or look for the red car and then turn right. Hope they didn’t go to town. One time, I was driving his lowboy. He told me very specific things to look for. Little dirt road on the left. Cross a bridge over a little creek. Then a white house on the right. Then a red barn on the left with a silo next to it. Finally, “The road you want is about 1/4 mile before that.” Well, you couldn’t see the barn when you passed the road. At least 4-5 more curves before you could even see it. WTF?! 1/4 mile the other way? Turned out to be at least 3/4 mile! And absolutely nowhere to turn around. Backing that stupid thing back up a tiny, crooked 2-lane road. Trying not to back into anybody else that might have had the misfortune to be coming the other way. Wide load. Can’t see s#!t. Nobody to flag for me. Awesome! Good times!
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If directions to your house begin with the phrase, "Go to the end of the paved road, and then..."
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Yep. Sure enough.
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Why is this engine tilted? Dodge Cabover
doubleclutchinweasel replied to BOBWhite's topic in Other Truck Makes
Engine is straight. Truck, camera, and ground are tilted. -
Removing the blue tractor parking brake valve.
doubleclutchinweasel replied to Full Floater's topic in Air Systems and Brakes
No kidding! -
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Removing the blue tractor parking brake valve.
doubleclutchinweasel replied to Full Floater's topic in Air Systems and Brakes
Yes, Geoff. One was older. One of the ones where the red button stayed in was a ‘67. The last one I had, where the red button popped with the yellow button, was a ‘70. Not sure how that aligns with the new regulations. Not sure if those setups were factory on both or not. I only drove 1 truck that had all 3 buttons. It was a Peterbilt. I can't remember for sure if the blue, tractor brake button popped out when the yellow was applied. But, I don't THINIK it did. But I can't remember that for certain either way. Funny how the older the memory, the clearer. -
Removing the blue tractor parking brake valve.
doubleclutchinweasel replied to Full Floater's topic in Air Systems and Brakes
Oh, on both of those, the yellow button still applied tractor and trailer brakes when pulled. The yellow “system” button was first in line. So, when it was pulled, it dumped air out of both systems and applied the brakes. The only difference was whether or not you had to push the red trailer brake valve in after you pushed the yellow button in. -
Removing the blue tractor parking brake valve.
doubleclutchinweasel replied to Full Floater's topic in Air Systems and Brakes
I’ve driven Mack’s with 2 different “red” buttons. On some, the red would stay in even when the yellow was pulled. On others, the red would pop out when the yellow was pulled. Difference is one was spring loaded and the other was not. -
Removing the blue tractor parking brake valve.
doubleclutchinweasel replied to Full Floater's topic in Air Systems and Brakes
You only need the blue valve to set the tractor brakes and leave the trailer brakes free to roll. Is kinda important with the roll-back type trailers. The Landoll Haul-all trailers need this setup. Other than that, not really much need for it. -
air shift pto
doubleclutchinweasel replied to pmolitor's topic in Antique and Classic Mack Trucks General Discussion
That is what I thought was so cool about the one I was using. The multiple PTO speeds. -
air shift pto
doubleclutchinweasel replied to pmolitor's topic in Antique and Classic Mack Trucks General Discussion
Almost sorry I asked a question! Anyway, I finally remembered something about that truck I was talking about. The PTO did actually attach to the compound case, not to the main case. I found a picture of one that reminded me of that. That would explain why the main had to be in gear for it to turn, and why changing gears in the main box changed the speed of the PTO. Of course, since I was just a young 'un, I HAD to try putting the main in neutral just to see if the note on the shifter plate was correct. It was. With front box in neutral, regardless of compound gear, the PTO did not run. From looking at pictures of these old boxes, I see there were some that DID attach to the front box, which would mean the front box could be left in neutral and the PTO would still be live, just like TJC said. That matches what the guys were saying about the countershafts in the front box driving the PTO. So, I guess this is a case of everybody being right, for the trans they were using. Apparently, there were indeed different setups on the PTO. Not sure if this is an "old" vs, "new" trans thing, or just a variation in how they could be set up. Or if it varied from model to model. Don't know. But, as usual, I learned something. Always do when this bunch is involved. -
air shift pto
doubleclutchinweasel replied to pmolitor's topic in Antique and Classic Mack Trucks General Discussion
So, if a PTO is driven off a main box countershaft, it would be live any time the clutch was out. Speed would be constant. If it’s driven off a shaft in the compound, the main box gear selection would determine the speed, and would have to be in gear to rotate the compound input shaft. So, I guess there would be several ways to set that up. Very interesting stuff. Great discussion. -
air shift pto
doubleclutchinweasel replied to pmolitor's topic in Antique and Classic Mack Trucks General Discussion
This is what we had... If you wanted to sit still and raise the bed, put the compound in neutral and the main in gear. If you wanted to move wile raising it, put the compound in gear and pick the main gear that suited the situation.
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