T-Mack1

Pictures of my repair for the leaking Aeroquip treadle supply hose. Note: I added a Tee to the treadle supply line just below the treadle and plan to use it to supply air to the park brake valve when we convert the rears from Service only to spring brakes.

Last one for today. The Dry/Slippery Road switch was originally on a bracket under the dash. So, for a cleaner look, moved it into the dash where many B61's have it (nothing was there). Note, the water temp gauge is only temp mounted. Previous owner mounted a mechanical gauge but didn't put it in the dash. Moving it into the dash is on the "to-do" list when we change the coolant.

Floor plates. They were not bolted down when we bought the truck. Cleaned, primer'd and painted. Then I made rubber hole filler pieces.

Took a gamble and bought a replacement speedometer cable. It fit the speedo perfectly. The Tranny side wasn't fitting. Measured the screw on retainer ID. Old cable was 0.825 inches, the new was 0.805. Dremeled it a tiny bit, measured. Dremeled a little more, measured... repeated till I got it to fit. We now have a working speedometer, weeooo....

My brother, co-owner Jack got a heater at the Macungie show. Sorry, only before picture I have is when I pressure checked it, but you can see the rust. Cleaned, treated the rust, most of the pitting filled and painted. And, the 12v fan motor worked. yay!!!!

Next, we picked up an ash tray from DM800guy . Cleaned it up, filled the rusted thru holes, made a new spring catch and painted. Can out decent. Now have to fix the hole someone hacked into the dash at the ash tray opening.

Sorry it's been awhile. here's some more updates. I think we said it earlier, Gas tank leaked. Took it off to get repaired. Someone had put fiberglass on three of the sides and both ends. so I took the fiberglass off and found several holes. Also found the sending unit almost totally rusted away. So tank got sent it out to get repaired. Moyer's tank repair in Greensburg, Pa. While it was out for repair, I cleaned and painted brackets. Bought a gauge & sending unit. Added rubber isolation strips. It was a pain in the butt getting it back in. But no leaks so far.

Not sure I can answer but what I see...... You have a bunch of optional switches (Key and Battery icons). And some kind of red thing. Key icons should be working with IGN on, and the Battery icons work directly off the battery. Is this a new issue??? When you pull what would be the yellow knob, a dash Park brake light should come on. Does it?? And, the center switch on the center row looks like it's ON in the OFF position (could be a camera angle thing though. Is that ON?? Is there some kind of interlock for the Body that might be affecting things? What's in the dash is an optional wiring harness (called an Overlay at the factory) for the optional switches that the body builder and or dealer hooks up stuff to. The switch connectors on the back side of the panel all fit on any switch with only a few exceptions. The top two connections on the switches is the power for dash illumination for the icons. It's odd that those 2 switch icons go out. And there may be a overlay for the dash switch/lock switches too. Also, the overlays have small connectors for the icon illumination (just saying so you understand that those connectors might be plugged in wrong) I would pull the dash panel off and check the labels on the switch connectors. It can be a spaghetti of wiring behind there. Good luck. (Note: I work from 2011 to 2016 at the factory and was Flex-repair on the cab line for 3 1/2 of those years)

That's the trailer protection valve (TPPV), and almost looks like it could be a dual-function trailer protection valve. Dual function means, if trailer attached, if trailer hose tears away, the massive air flow will shut off air to trailer. If trailer not connected, the Hand-Control (AKA trolley valve) will act like a service brake.

Correction, our current hood emblems are B60

That looks pretty close to the one I saw at the Mack museum, the brochure and on YouTube. We couldn't find one so I modified an Edelbrock air cleaner to fit.

Thanks Bob. In some of the clean up, I found that the unused brass 5/8" air line to the trailer that was just bangling, capped, under the tiller turntable (fire-truck fifth wheel to you none fire guys) was long enough to use.

The Heinz, You have to remember. I worked at the factory and I only ever got to drive brand new trucks. Only days or even hours after coming off the line (though job but someone has to do it). So new clutch, new trans & new harnesses. I never heard of any issues that occurred in the 1-2 years of operation "window" the engineers fed info to us on, to pay attention to.

Many of us think the "Mack" on the new grille is off center (too Low) but that's because of cooling system placement. Yes, the windshield takes some getting use to. I will say, when driving, it's almost like you're in a COE because the slope is such you basically see the road and not much hood. I'm wondering what they will look like after the Aftermarket make all the chrome options.

J Neiweem, We were told that an updated CHU (now a PI) was under consideration. I have no other info. Next, we were told that they will be offering more Cummins choices. This is sort of related to the MP7 having issues meeting the 2025 emissions. Although, I think it may be the high HP versions of the MP7 (395 & 415 hp). With the Cummins, comes the option of the Eaton "Endurant" Automated Manual Trans. I've driven them but they hesitate between shifts more noticeably than the Mack m-Drive.