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Joey Mack

BMT Benefactor
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Everything posted by Joey Mack

  1. Good call Mark! and pics would help a bunch.. The MGM chambers you suggested are top notch.. jojo
  2. some one plumbed the axle to the primary, it needs to be on the secondary. The main supply out of the secondary tank needs a "Pressure Protection Valve" installed at the tank. so that if a failure occurs on the tag axle it wont drain most of the air needed to "Stop"!
  3. Its always good to keep the truck in good repair, especially the D.O.T. items,(safety).. However... when the truck is parked, and the brakes are "Set"... There is NO air going to the brake chambers... The air is leaking in other places... when sitting.. My guess is this truck has air switches for the tag axle and body controls... If there is an electric selenoid in-line, check those closely. jojo
  4. you will be fine.... others will chime in..
  5. Hell yeah!!! thats a great calculator.... I searched the web, but didnt find that one...jojo
  6. i dont know for sure, but engine rpm's will drop at 65 mph
  7. You can park on a clean floor. mark the tire and the floor at 6 O'Clock. roll the tire until the mark hits 6 O'Clock again. mark the floor, measure the distance between the marks and divide it into 5280... thats your revs.. jojo
  8. ok.. only reason i posted is because I have done many Mack rears and 4.17: 1 and 4.42:1,,, were the most common by far... Someone who knows more than me will post for you..jojo
  9. try this. 11r24.4 revs/ mile... 858 revs.
  10. Ok. real quick... Lots to absorb here.... If you have a bad carrier (4:42) Then change both to (4:17), and reset the dipswitches on the speedo. I have the chart on this if you need info. basically, Final drive ratio hopefully OD .76:1 ish... 16 teeth on the output tone wheel, then 4.17: rears, and tire revs/mile. do you know how to do it the old timey way? I can show you the chart... by the way. I bet that truck can pull anything the way it's set now?? Jojo
  11. Forget going to the Mack store on-line.. i tried.. hell try anyway... Go Bulldog! Jojo
  12. It just keeps going.... We have over 1 Million homeless people on the streets. We don't know why or what got them there. A good bit of them are Veterans, and yet.. there they are, while we give free room and board and medical care to people that enter our country illegally.. can someone teach me why I am wrong and shouldn't be pissed off about this? jojo
  13. I figured the bearings were the difference, but because its not off the top of my head ,, I need guidance. thank you.. jojo
  14. It says 8 speed tranny... the shift knob tells me it's a 310M... good tranny... jojo
  15. is the back half a 2 axle car trailer?
  16. Hey guys, I'm working on a 1988 RW-613 with budd wheels. My customer wants hub piloted steer axle hubs. I either need to buy a pair or get the last "6" of a vin that had these hubs, so I can get a part number.. Thank you, Joey Mack
  17. All you need is a tape measure and a box cutter, a roll of hose, and these fittings, and you can make lines for days.... Jojo
  18. The I.D. of those hoses is 3/8".. that is plenty... There are D.O.T. grade fittings that you build in your hand, they even come with the 5/16" allen wrench to build them. you buy a length of D.O.T. hose and cut it to what you need, screw these fittings in the end and your done... I will look for the name of them.. I have used dozens of these but cant remember the name... Crazy...
  19. That's a great truck... No sweat... many of us here can help you... Can you raise the body and snap some pic of the frame just behind the cab? stand back some to catch as much as possible.. then post them.. I will come back and look.. Jojo .....your in the right place here..
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