Swishy Posted February 4, 2022 Share Posted February 4, 2022 My 2 cents worth sez (tax free 2day) Get the RSend air born & get sum daylight under the wheels & see if U can replicate the problem We had a truck clatterin but was loose wheel wedges and nuts on spider spoke wobbly wheels cya Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488551 Share on other sites More sharing options...
mechohaulic Posted February 4, 2022 Share Posted February 4, 2022 i forgot to say one end of hose to your ear other end use it to follow where the noise sounds to be coming from. noise will definately get louder . the hose technic helps eliminate surrounding noise. Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488552 Share on other sites More sharing options...
mechohaulic Posted February 4, 2022 Share Posted February 4, 2022 5 minutes ago, Swishy said: My 2 cents worth sez (tax free 2day) Get the RSend air born & get sum daylight under the wheels & see if U can replicate the problem We had a truck clatterin but was loose wheel wedges and nuts on spider spoke wobbly wheels cya fronts are budd the complaint states noise sounds to be from belhousing area. i do agree with loose wedges ; i've seen it happen. to be that looose the tire would spin on the hub though Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488553 Share on other sites More sharing options...
Joey Mack Posted February 4, 2022 Share Posted February 4, 2022 good one Mech... I have a 3/8" car brake line that i use.. it works too.. simple, cheap, and these tools work.. I was close on the crankshaft end play... It's .004"-.011"... the first pic is E-6 2 valve, the second is E-6 4 valve..jojo Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488554 Share on other sites More sharing options...
Onyx610 Posted February 4, 2022 Share Posted February 4, 2022 Any possibility a worn out vibration dampener could be transmitting vibrations/noise through the crank to the rear of the engine? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488555 Share on other sites More sharing options...
Joey Mack Posted February 4, 2022 Share Posted February 4, 2022 i was thinking about taking the belts off, and running it to see if the noise is still there. unless it only does it when driving? sorry if i missed something here.. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488557 Share on other sites More sharing options...
Onyx610 Posted February 4, 2022 Share Posted February 4, 2022 (edited) Light load and certain rpm range. Heavy load not there…also has to be in gear. Edited February 4, 2022 by Onyx610 Spelling Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488560 Share on other sites More sharing options...
Joey Mack Posted February 4, 2022 Share Posted February 4, 2022 thanks, im having a little trouble with my P.C. not able to go back and read again. my issue is for another web site, jojo Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488563 Share on other sites More sharing options...
Mark T Posted February 4, 2022 Share Posted February 4, 2022 4 minutes ago, Joey Mack said: thanks, im having a little trouble with my P.C. not able to go back and read again. my issue is for another web site, jojo That's what happens from looking at websites of dubious content 🤔 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488567 Share on other sites More sharing options...
Joey Mack Posted February 4, 2022 Share Posted February 4, 2022 I have a separate P.C. for that.. my wife put a anti virus on this one, and like many other vaccines, my P.C. got the bug.. I will re-start it later. it's working again.. This clattering issue is one that I wish I was there to see it happen... so many things could be the cause. is the hood vent and air control loose and rattling? or something else loose and vibrating? who know's? hopefully not a major issue.. jojo Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488570 Share on other sites More sharing options...
Onyx610 Posted February 4, 2022 Share Posted February 4, 2022 Can you post a video of this? Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488572 Share on other sites More sharing options...
Joey Mack Posted February 4, 2022 Share Posted February 4, 2022 me? Onyx.... Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488574 Share on other sites More sharing options...
Onyx610 Posted February 4, 2022 Share Posted February 4, 2022 No, lukasswaziek. Sorry about that haha. Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488575 Share on other sites More sharing options...
mechohaulic Posted February 4, 2022 Share Posted February 4, 2022 32 minutes ago, Joey Mack said: I have a separate P.C. for that.. my wife put a anti virus on this one, and like many other vaccines, my P.C. got the bug.. I will re-start it later. it's working again.. This clattering issue is one that I wish I was there to see it happen... so many things could be the cause. is the hood vent and air control loose and rattling? or something else loose and vibrating? who know's? hopefully not a major issue.. jojo frustrating isn't it. you want to help , but can't . loose and vibrating wouldn't be so specific at one rpm range or load/no load. we all know the out come... cause is located we will all say " why didn't i think of that!!LOL almost want to hop in my vehicle and drive there for physical diagnostic check.this forum is fun to watch a vehicle built, or help with an electrical issue . intermittent noise had me staring at the ceiling 3 am today. brain racking. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488577 Share on other sites More sharing options...
mechohaulic Posted February 4, 2022 Share Posted February 4, 2022 i keep going back to original post trying to search for clues. if it were the fan hub kicking in or out 12-16 rpms wouldn't be as important as temp; which would explain light vs heavy load. but the noise came while truck was up on blocks. couldn't have gotten to temp. a set of mismatched belts slapping won't make it to the cab. running down mental list of all external parts ; can'tbe he was walking around unit while it was running on blocks and the noise was heard. any engine related issues would not make a difference in gear or not. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488582 Share on other sites More sharing options...
Popular Post Joey Mack Posted February 5, 2022 Popular Post Share Posted February 5, 2022 what popped in my head was a bad clutch disc, bearing in the front of the tranny, but I dont like to start out big and work my way down to a simple issue.. the issue happens in a specific range, under a light load. so then I thought something is loose and only vibrates at a certain RPM or strain.. I really enjoy posting here, but sometimes, I get caught up in it, and go on a tangent. I'm still impressed by how many people there are here, that are willing to help.. Jojo 3 Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488584 Share on other sites More sharing options...
mechohaulic Posted February 5, 2022 Share Posted February 5, 2022 3 minutes ago, Joey Mack said: what popped in my head was a bad clutch disc, bearing in the front of the tranny, but I dont like to start out big and work my way down to a simple issue.. the issue happens in a specific range, under a light load. so then I thought something is loose and only vibrates at a certain RPM or strain.. I really enjoy posting here, but sometimes, I get caught up in it, and go on a tangent. I'm still impressed by how many people there are here, that are willing to help.. Jojo mentally i've been hanging out at the clutch dept since the get go of this topic,seems to be source of clatter . parts in clutch subject to different pressure under changing loads you were in the right with the bar up to pilot shaft. as stated earlier; not being there to try things which are automatic reactions challenge. truck running on blocks, 1- was the clutch partially engaged looking for change in clatter 2-does the truck shift correctly,3 -what was difference with clatter from on blocks to road trial 4- is there a way to put a video on this forum so we can hear the clatter? 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488585 Share on other sites More sharing options...
Onyx610 Posted February 5, 2022 Share Posted February 5, 2022 Something is out of balance. I know most engines have an out of balance point where they transmit vibration at a specific rpm. Most really good engine builders will actually put pistons and rods on a scale and place them together to get the closest weight for each. Clearly Mack doesn’t do this in the factory haha. It could be very well be possible that this vibration is transmitting into the transmission. Since he says it has to be in gear for this to happen. I’d like for him to post a video of this issue to really help pin point the issue. Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488587 Share on other sites More sharing options...
JoeH Posted February 5, 2022 Share Posted February 5, 2022 3 hours ago, mechohaulic said: i'll bet you didn't try the "heater hose technic" you and others will have a good laugh . take a length of heater hose ; 1 in x 2-3 ft long worked for me. i know today they make fancy stethoscopes . hose to your best ear and follow under neath till you close in on the noise. that noise isn't bad, frustrating and making me scratch my head is ::why did i say I DO twice!!!LOL A screwdriver is what I learned to use! Put the tip of the screwdriver on the engine or trans and cup the end of the handle to your ear and it's like a whole symphony suddenly comes to life. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488592 Share on other sites More sharing options...
JoeH Posted February 5, 2022 Share Posted February 5, 2022 On 2/3/2022 at 6:19 PM, Lukasswaziek said: So I have an issue that's been going on as long as I've owned this truck, it's a e6 350 with a maxitorque 9 speed. Between 1200 and 1600 rpm I hear a distinct clatter but only under light load and the truck has to be in gear and rolling. When I rev it up in place at that RPM range It won't make the noise at all, and when I'm pulling a heavy load and get into it, it goes away also. Sounds a little too loud to be an injector knock. Oil pressure is around 30 at idle, 60psi at 1600, 90 at 2100 and oil is clean. Just put a headgaskets in it and cylinder walls look great, all still have crosshatching and no scoring. This noise almost sounds like it's coming from the rear of the engine or more like the bellhousing/clutch. Sounds like it's right under the cab when I'm driving. I'm not sure where to start. Does it make a difference what gear you are in? Hi range? Low range? If you put your foot on the clutch pedal and apply gentle pressure to the throw out bearing (without disengaging clutch) does the noise change? 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488593 Share on other sites More sharing options...
mechohaulic Posted February 5, 2022 Share Posted February 5, 2022 13 hours ago, Onyx610 said: Something is out of balance. I know most engines have an out of balance point where they transmit vibration at a specific rpm. Most really good engine builders will actually put pistons and rods on a scale and place them together to get the closest weight for each. Clearly Mack doesn’t do this in the factory haha. It could be very well be possible that this vibration is transmitting into the transmission. Since he says it has to be in gear for this to happen. I’d like for him to post a video of this issue to really help pin point the issue. the whole purpose of the vibration damper on front of crank is to account for "mismatched" pistons and rods. an earlier text stated it's not a vibration; it's a clatter, that's the challenge to this problem. vibration damper do go bad; specially when some one takes a hammer to them trying to remove one. sure hope we are informed of the solution if one is found. Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488620 Share on other sites More sharing options...
JoeH Posted February 5, 2022 Share Posted February 5, 2022 On 2/3/2022 at 8:38 PM, Lukasswaziek said: Okay so got the read ends on jackstands, front wheels blocked. Put it in a higher gear and would drag the brakes and now I'm leaning more twords the engine making the noise. It sounds like a real bad injector knock, but for some reason just resonates in the cab. but then again I'm not hugely familiar with Mack trucks and the noises they make. Mostly worked on and drove cats and cummins. I checked the pto's to see if either one was making the noise and it's not that. If you get it at the right rpm it sounds more like a hard knock rather, but otherwise clatters with the engine firing Where are you located? You might have an expert on here not too far away.... Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488628 Share on other sites More sharing options...
mechohaulic Posted February 5, 2022 Share Posted February 5, 2022 4 hours ago, JoeH said: Where are you located? You might have an expert on here not too far away.... sure hope you (we) get a reply. don't think it's connecticut. the field in the back ground looks way too big.this post has my wife concerned reguards to my mental stability; i have a magnifier and my phone taking a picture of first post trying to enlarge the door to read location. too blurry. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488636 Share on other sites More sharing options...
mechohaulic Posted February 5, 2022 Share Posted February 5, 2022 18 hours ago, JoeH said: A screwdriver is what I learned to use! Put the tip of the screwdriver on the engine or trans and cup the end of the handle to your ear and it's like a whole symphony suddenly comes to life. the screwdriver method also works and has been done. the heater hose works a tad better for being under neath on a creeper or leaning over a wheel searching for that pain in a-- noise/ air leak Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488638 Share on other sites More sharing options...
fjh Posted February 6, 2022 Share Posted February 6, 2022 these all depend on how def you are! 😁 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69147-clattering-with-light-load/page/2/#findComment-488695 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.