mcratchet1
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Everything posted by mcratchet1
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Just to clarify the cover we’re talking about removing is on the back side above yoke? Four bolts to remove, I tried to pull that one off but does not want to move back. Didn’t want to try to pry it off. Never removed that one before is it ok to tap it back with a rubber mallet?
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Is this it under back cover the attached pic
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Yes I flip the button before taking it out of high gear to go into low. I tried it in neutral as well no difference
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No I did not is there orings inside that cover? or what should I look for
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The range button moves good I did not see any kinks. It does not do this all the time but probably 5-6 times a day
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Yes I can hear it shift but when I take off in low gear sometimes it does not grab a gear like it’s in neutral. It’s not shifting all the way to low gears. I can flip the button back and forth and hear it though
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Hello I have a 2013 mru 613 with T310 10 speed tranny. Couple times a time I cannot get it to switch to low gears. When I stop sometime I toggle gear switch up and down then I can. Other times no luck and I take off in 6 gear. I replaced hi/lo valve thinking maybe internal leak but no change. Also new oil, check for air leaks nothing . Does this sound like an internal problem. Any help would be really appreciated
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Yes exhaust valve up on #2. I got it, I just did not snug down enough on exhaust valve to put enough pressure down on spring. Once I did that she’s running great. Thanks for all the quick help! I really appreciate it!!
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Ok so push down on the springs and set the exhaust . Just push springs down by hand? I made sure I was on right one stared on 1&6 6 was tight 1 both were loose and push tubes were close to being even
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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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