Porch Pup
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About jakehaab

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    Old Iron Expert

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    poconos, pa

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  1. The low switch is no where to be found in the engine compartment..not even wires anywhere that could possibly be to the low switch...could it be that it opperated with out one? I need to trace back the wire that i have plugged into the compressor and see where the heck it goes Sent from my SM-G920V using Tapatalk
  2. Did you notice where the low pressure cut out switch was when you were working on yours...im hearing its suppose it be on the firewall or on the reciever drier and its in neither of those locations. There is no power going to the wire that goes to the compressor and dont know if that wire comes from the low pressure switch or not. ( havnt done a full investigation into that yet ). But couldnt imaging the system doesnt have one. Sent from my SM-G920V using Tapatalk
  3. I am getting ready to do a ac system overhaul. I have had this 91 rd688s for 6 years and dont remember if the ac ever worked or not but 6 years of no ac has been enough. A line came off the compressor and the system became open so i am going to start by changing the compressor reciever drier and all hoses and see it it holds pressure...but before i tear into all of that when i switch on the max ac from the control panel and fan on high ( i hear a significant air leak but.. ) the air flow that comes out of the vents is minimal to nothing. What should i check before i start tearing everything apart...this hvac control is relativly new and installed by mack a few years ago.
  4. I recently swapped hubs and went to a wider tire now I have about 2.5" of tire outside of the edges of my fenders...probably not pa legal. I'd like to utilize the fasteners and holes this hood currently has for oem flares or I will have to use a side mount universal flare such as pacer flexy flares. Does anyone know a Mack part number or anywhere other than Mack that may carry these oem style flares?
  5. I have been buying mainly universal things to spruce my 1991 rd up. Chrome vinyl is a cheap way to chrome harder to come by parts. But things like switching lights to led and using chrome bezels where ever you can make a good appearance. New Mudflaps and weights behind the front axle and in front of the front drive axle hanging off the box would look good to...I also use nut covers where ever I can too. I so found on the interior that Peterbilt gauge covers with a dab of clear silicone and toggle extensions and I think it was Peterbilt swich id plate bezels fit too. And a can of paint on the dash and cab plastics dresses thing up nice for cheap too. And if your not in the paver all the time i think it looks good to add center flaps ( or one big 48" wide piece of old cleaned up quarry conveyor belt like I did before I started Paving alot ) but you have to fabricate up a mount then.
  6. While we are talking cables, does any one know what the proper black plastic adapter that comes with a new cable is to use, I believe the adapter for the speedometer is OK in my truck but I have a feeling my tach cable has the wrong one as my hours on the hour meter never add up...seems like its well behind.
  7. Speedometer works & the odometer flat out quit working. The pin for the speedometer jumps about 5mph of where its suppose to be. Can this be fixed or do ii need to start at 0mi again with a new one?
  8. Im just tired of gauge lights going out, sockets coming out of the backs of the gauges and I think they would give a more precise reading at a glance. And the blue led would go good with my truck
  9. That's is probably close to the same weight...I guess I need to take it down and see if there's any good way to fasten the cb itself to the inner cab ceiling...just was curious if anyone has ever done this before.
  10. Any body know what teltek gauges will work for the older mechanical non computerized trucks? Specifically h2o temp, voltage, oil psi, fuel level, air psi ( primary and secondary systems ) ,and pyrometer?
  11. I have switched my truck over to hub pilot and have hubs and drums available. One of the drive hubs are nearly new only 500 mi on it, cost me $600 . The 4 brake drums only have about 10,000 mi on them. There are 3 additional drive hubs but 1 of them is questionable. The 2 steer hubs are in good condition also has brake drums attached with plenty of life left one has all new wheel studs. Also have bearings available in decent condition and some 24.5" x 8.25" wheels . possible trade for a good condition late r model hood. Contact me via phone or text 570-656-3737 if interested. Make me a offer.
  12. Has any one ever mounted their cb inbthe passenger side of the plastic head liner? If so do you have any pictures and info on how it was done..I don't like the look of the cb on the dash but am worried the plastic is too flimsey for a heavy radio to sit in with these nice pa roads knocking the hell out of everything.
  13. Steer hubs

    Front steer axle...I installed them with a flat face accuride 9" wheel 315/80/22.5 tire and I'm about 2.5" on either side past the hood.... going to have to get fender flares or a ddifferent style wheel
  14. Steer hubs

    Anyone know what a good part number is for hub pilot hubs for a 20k steer axle? I have a set of hf805k gunite hubs but they look way to wide for my spindles. Im worried when I mount the wheels they will be wide past the edges of the fenders.
  15. spoke to hub pilot steers on my dm

    I know on the r models iv seen they needed to go to a 315 tire on a 9" flat faced Alcoa rim to avoid rubbing hoses and brake chambers.