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Porch Pup
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mcratchet1's Achievements


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  1. No pto in front yes I’ll try that I’ll take the belts off and see thanks
  2. I have 2006 Mack mr 688s with Horton clutch fan about two years old. It seems like every other day it will start humming almost whistle for a little bit then go away. Only while not engaged. All pulleys and belts are about six months old. Is this a early sign of clutch failure? Any advice would be really appreciated
  3. Ok thanks I check the hoses and tubing I don’t see any holes or leaks. It does not appear to be affecting anything just annoying. It seems to stay on only in the afternoon when it get hot
  4. I have a 2007 mr688s with a 2-8 blink code which is combustion air temperature? Is it the boost pressure sensor that would cause this ? Thanks in advance
  5. Just wondering if 75w90 is the right type of gear oil to be using in these diffs I work in northwest Florida 2007 Mack mr688s
  6. Ok thanks, the hole was tapped to fit a heli coil I put one in last night but the bolt for tensioner does not seem to get real tight so I’m worried to death it going to come out. I did not know I could drill a hole bigger in tensioner that might be a great idea heli coil is a 10.5 but od is bigger of course the threaded insert sound better I will try to order some just was wondering if they will last or just do the dang cover thanks for your guys professional help I really appreciate it
  7. Ok main belt was worn time to change grab tensioner was loose tried to tighten nope bolt pulled out with a heli coil around it sob! My question obviously owners before me fixed it with coil. Don’t know why it failed can I do the same or does some know a better repair ? It’s In the aluminum front cover tensioner #21291243 or is only right way to replace entire front cover thanks for any help
  8. Ok thanks for help guys, the scribe arrow was right. Thought that was strange but it worked. Installed, bleed air out and she steers perfect thanks again!!
  9. The pump will not turn enough to align must be the big arrow
  10. So turn it to that small arrow right
  11. Ok that means I would have to turn heat pump 180 degrees to align is that ok
  12. Reman gear has 2 marks but old one only had one and pitman arm only has one! It’s Sunday everything is closed would anyone know the answer please? Which make do I align
  13. Ok thanks for the information I think I’ll just get the reman and be done with it.
  14. 2007 Mack mr688s gearbox is leaking around shaft area. My question is how bad of a job would resealing it be? Instead of buying a reman for $1200 mack part# 8148592SV5R or does anyone have a rebuild manual on gearbox any help would be greatly appreciated
  15. Hey guys I have to replace water pump this weekend just wondering if someone knew torque of bolts? It’s a 2007 mr688s 400 aset engine my first time changing this design. I have done several of the 2000,2001 models where pump sets in bracket. Any advice or heads up in would be greatly appreciated thanks!!!
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