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JoeH

Puppy Poster
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    42
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8 Good

About JoeH

Previous Fields

  • Make
    Mack
  • Model
    R686ST
  • Year
    1979

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  1. Glad it's not you that's in for the never ending repair bills then! My dad and I are picking up a 1988 rd6882 tri axle with a new frame (guessing 5 years old) new camelback (5 years again...) rebuilt rears (5 years...) a rebuilt 300 horse with a T2070! About the only thing wrong with the truck is duct taped hvac, some mold on the dash, and it's the wrong color. Price? $21k! Thats how you buy a truck. 😉
  2. Your problem is you bought a new truck! You're supposed to buy em after someone else figured this crap out.
  3. I can't see that in the pics, but I'll take your word for it!
  4. Double frame looks in good shape, can't see an oil pan to see if there's even an engine in it. Hood has a nice crack, nothing a 2x4 fiberglassed in can't hold. Doesn't look like there's a rear window in it. Needs a lot of small stuff though... Maybe worth 1500...
  5. The 2001 rd688st I owned for a year had relays in the glove box and a relay/fuse box under the hood, top center on the firewall. It had an etech 400 engine. FJH and co. might be talking about the accessory relay in the dash under the ash tray. On our mechanical Macks, when you bump your key on it actuates an accessory solenoid in the dash under the ash tray. It powers your gauges, radio, blower, etc. Not sure if the electronic engines use this solenoid too, I expect they do. The last couple I got from Mack are junk, they get hot on our stock truck and stop making contact reliably. Smack it with a screw driver handle usually gets it to engage.
  6. Build sheet says "extra roomy cab interior" What are they comparing cab roominess to? A Mini Cooper? Never worked on an E9, are they shorter than an E6? Can't imagine them being much shorter, your only 4 1/2 pistons deep instead of 6... Maybe that's the "extra roomy cab interior" - less dogbox.
  7. JoeH

    another Jake brake question.

    Made me think of Maxwell the Pig.
  8. JoeH

    Mack 5speed swap

    +1 on the engine brake. It'll make a big difference. 1) cuts shift time to less than half, and 2) Jake keeps the turbo spooled up a bit. I would try that before swapping transmissions. Makes the maxidyne & maxitorque a real heal climber. 3) when you use Jake to slow down through your curve it can keep your turbo at 10psi boost if your RPMs are kept at1800+ for long enough. Note his problem isn't low end, it's 40+ mph.
  9. Those are sweet dimensions. Do you have those drawings for a 1995 rd688s? 228" wheelbase? Does Canadian spread tandem have the same turning radius as the closer set American tandem with same wheelbase?
  10. JoeH

    installing a thermostat?

    I haven't done one on an e7, but I always put the copper heat sink on the "hot" side. It needs to heat up to cause it to open. I also always make sure that there's a small hole in it to allow the water jacket to purge air out of the block before startup. If it doesn't have one, I drill one.
  11. JoeH

    jake brake for EM6-300L?

    I have three 2 valve endt676 engines that we have pulled the engine brakes off of. Everything on those engines are American sized wrenches. Not sure if it fits the em6, dad would probably kill me for giving them away, but I doubt we will ever put them back on a truck. Took one set off because it was on a DM686sx and never worked, another set was on a spare motor we needed a camshaft out of, and the third engine has a weak valve spring and the Jake brake spacer plate on top of one exhaust valve slipped out a few times, so we pulled it off rather than keep messing with it. Mack wanted $80 per jake style valve lash adjuster, several of ours were worn out one motor. Having a spare motor pays. I think the only differences between an e6 237 and a 285 are turbo, exhaust, fuel pumps and intercooler. Block, heads, crank, pistons, all the same. My dad ran into some different timing covers over the years but that's about it.
  12. My dodge pickup would do this. Low trans fluid, sump was just barely in the oil, enough to pickup air and go in neutral, then back in gear, then neutral. Once it warmed up it'd be ok (fluid expansion). It was an idiot behind the wheel problem. Read the dipstick and check it how it says! Ford's say check in park or neutral, dodge says check in neutral. (NOT IN PARK) Previous owner also used a filter from his hemi baracuda. Almost the same trans as my 47re, but the Cummins auto used a deeper pan and filter.
  13. JoeH

    Need Info For D1070

    http://www.discountdrivetrainsupply.com/rebuilt-mack-transmission.html Listed here as a 10 speed. No idea on ratios. If it's out on the floor put it in gear and count. Use a degree wheel to get your fractions. Ewww dug up an old post.
  14. JoeH

    Mack wheel rims on a 31 Peter Pirsch ?

    I remember watching my dad do split rims once in a while 20 years ago when I was a kid. They are dangerous. We still have the tools and whatnot, but I'm happy with tubeless. Never get in front of that lock ring when airing up, if it lets loose it'll cut you in half. And on disassembly don't bend the lock ring, it'll be far more dangerous when it goes back together, as it won't want to fit in it's groove.
  15. JoeH

    what motor

    It should say on the engine plate on top of the valve cover. E7 probably. Post a couple pictures of the engine and the plate.

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