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JoeH

Pedigreed Bulldog
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Everything posted by JoeH

  1. JoeH
    My apologies to the parts guy, but I'm glad your compatibility options opened up!
  2. JoeH
    Though I'm not sure if it's possible to over rev an automatic? Unless the engine came from a different truck...
  3. JoeH
    DOT # is at the bottom of the door; changed our # to "interstate" this morning. Since the truck has a PA only plate we have to buy permits for every state we want to drive through. Some states won't let you buy the permits if your DOT # isn't marked interstate. Some states don't care. Ohio cares, Illinois cares and since we have heard horrible things about Illinois roads the truck is going from Ohio to Kentucky to Missouri to Iowa.
  4. JoeH
    What one man might define as "jerky" another might describe as a lull in the idle. Low speed governor springs could be worn out. But I've never messed with a fuel pump other than adjusting timing or idle speed. If your heel isn't planted on the floor while you're driving around it'll be a jerky ride...
  5. JoeH
    If you have work for a 99k gcvwr then buy a rig rated for a 99k gcvwr.
  6. JoeH

    Illinois roads

    JoeH posted a question in Mack Truck Q & A

    My parents are driving our MR688 from PA to Indianola Iowa. Everything they have heard is that Illinois roads are awful. Can anyone give us feedback? A couple route options: Rte 80 Rte 74 splitting to either 72 to Missouri or staying with 74 to Iowa. Anyone know what shape these roads are in? Remember truck is a cabover bobtailing on 20k steer axle. It rides like shit, and my dad is nearing 70!
  7. JoeH
    That you have it chugging along somewhat means the EECU must be working to some degree. Pull the valve covers, time to check mechanical bits. Check slop on rocker arms. Bent pushrods? This engine could have been over revved. Oil pan gets you a view on bottom of the engine: camshaft, debris in bottom of pan, etc. Valve covers tell you what's going on above.
  8. JoeH
    Measure how tall the frame is. I think 9" is a tractor trailer frame, 10" or 11" is required for dump truck work.
  9. JoeH
    The screwdriver trick I learned for motorcycles. Minor size/noise difference.
  10. JoeH
    @Joey Mack
  11. JoeH
    Go to your dealer and order book # 8-211!
  12. JoeH
    3-4 is engine position sensor, located on the timing cover. Camshaft.
  13. JoeH
    Appears your VECU power is dropping out. This is likely the trigger for the 6-3 code, as the VECU dropping out will obviously disrupt data communication.
  14. JoeH
  15. JoeH
  16. JoeH
  17. JoeH
    So some Mack camelback trucks have a torque arm on the rear differential going to the right frame rail. It prevents the axles from walking. Check to see if you have one, check condition of the joints at either end. Replace if worn. Also, elephant pads aren't a terrible job, doable in a day, but they do take some serious torque to tighten down. Expect to replace all bolts, you will likely be torching some off. Few different styles of pads I believe. Some use a metal side insert some don't.
  18. JoeH
    Remove one side, separate, sandblast/paint, bolt back together, install, shift cribbing to other side, & repeat.
  19. JoeH
    This is the second truck I've done this to. Leave one side in to hold alignment of everything. Put jackstands/cribbing under everything on the other side, and pull the supported side out. Separate by driving a long 2x6 (cut the one end into a wedge) into one end. Lots of hard work involved, be careful you can kink the rails if you try separating them like a wish bone. If it's a dump truck you will have to pull the dump body off. First truck we did was an RD model, the cab had to get jacked up pretty high to let the frame clear. This one I linked is an MR, the cab tilts forward giving tons of room to work.
  20. JoeH
    Also that motor/trans has a lot to be desired for on hp/gears for 99k.
  21. JoeH
    If you want to haul heavier then hold out for 55/58k rears.
  22. JoeH
    You want 44k rears. Simply not worth investing in an underrated truck. The 38's will hold up for a while, it'd do the work ok, but potholes will beat the truck up. And you will be getting redflagged by DOT for being over the rated capacities of the truck.
  23. JoeH
    Where are you located? You might have an expert on here not too far away....
  24. JoeH
    Does it make a difference what gear you are in? Hi range? Low range? If you put your foot on the clutch pedal and apply gentle pressure to the throw out bearing (without disengaging clutch) does the noise change?
  25. JoeH
    A screwdriver is what I learned to use! Put the tip of the screwdriver on the engine or trans and cup the end of the handle to your ear and it's like a whole symphony suddenly comes to life.

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