mcratchet1
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Everything posted by mcratchet1
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Yes I did that I guess my question is on exhaust push rod that has spring do I need to compress spring then check exhaust or leave spring alone
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I have 03 Mack mr688s 350hp i had to replace #1 injector the push rods on exhaust side has springs on top of them. I have never seen this before. So I adjusted intake and exhaust as normal. But I have a rattle now so they must be to loose. Is there a certain way to adjust them with those springs? Any help would be appreciated
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No i did not
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Just had a question I have 07 mr688s cab over lately I’ll get no response to pedal for a split second while driving it always happens around 1300-1600 rpm’s it was maybe once a day now it’s most of the time. I check the batteries, connections, grounds, etc. awhile back I had no response to pedal at all so change the pedal sensor. It does not log any codes. I have checked EUP connections also. Any advice would be greatly appreciated
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Ok thanks for that input I know I have a few small leaks because next morning I only have about 40 lbs in tanks but just recently my purge valve is popping off every 20-30 seconds
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Hey I have a 2007 mr688s the air compressor has started leaking oil getting a little out of purge valve. Should I change now or can it wait till the end of year ? Thanks
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Top carrier leaking into bottom chunk
mcratchet1 replied to mcratchet1's topic in Driveline and Suspension
Ok great thanks, just wanted to make sure! -
I have a 2007 Mack mr688 the top carrier is leaking into bottom one over filling it. Is there a seal inside that separates them? Thanks!
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Ok thanks guys I’ll try the oil and left hand bit and keep an eye on them! It’s a concrete boom pump on its back lol
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Hey guys just was wanted a professional opinion I have 2007 Mack mr688s mp7 400hp the #6 exhaust mainifold broke bolt the top one, is this the cause of another issue or just old rusted bolt? Should I try to get the one bolt replaced or wait to see if another one breaks? Thanks in advance!
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No oil at all ever comes out of tanks at night I will check lines for build up thanks
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I have 07 mr688s some morning it takes about 10 mins to build air most days only about 2 mins. I replaced governor check for air leaks and serviced dryer. Replaced filter and purge valve. I have had this truck 2 year I don’t when air compressor was changed. Is this a sign of my air compressor starting to fail?
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No pto in front yes I’ll try that I’ll take the belts off and see thanks
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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
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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
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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
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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
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Help with strip threads for belt tensioner
mcratchet1 replied to mcratchet1's topic in Engine and Transmission
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 -
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
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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!!
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The pump will not turn enough to align must be the big arrow
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So turn it to that small arrow right
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Ok that means I would have to turn heat pump 180 degrees to align is that ok
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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
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