mackone Posted January 19, 2022 Share Posted January 19, 2022 Hi I'm wandering if anyone knows the part# or size of the o-ring on the aluminium side cover is? (Mack 44,000). Mine is leaking pretty good. Thanks Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/ Share on other sites More sharing options...
Popular Post Joey Mack Posted January 19, 2022 Popular Post Share Posted January 19, 2022 the o-rings are easy to buy... how corroated is the cover? if it's not salt damaged, just drain the top reduction, pull the cover, remove the o-ring in one piece, (hopefully). clean the groove, clean the opening of the carrier, clean the o-ring and rub it down with Mack gray RTV or Permatex ultra black, and put it back together, put a dot of RTV on the 4 bolt's. then put new gear oil in the side plug. this will also give you the chance to inspect the gear set and clean the magnetic tray.. jojo 3 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-487390 Share on other sites More sharing options...
R.E.D Posted January 19, 2022 Share Posted January 19, 2022 30 minutes ago, Joey Mack said: the o-rings are easy to buy... how corroated is the cover? if it's not salt damaged, just drain the top reduction, pull the cover, remove the o-ring in one piece, (hopefully). clean the groove, clean the opening of the carrier, clean the o-ring and rub it down with Mack gray RTV or Permatex ultra black, and put it back together, put a dot of RTV on the 4 bolt's. then put new gear oil in the side plug. this will also give you the chance to inspect the gear set and clean the magnetic tray.. jojo And check back lash as well. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-487393 Share on other sites More sharing options...
Popular Post MACKS Posted January 19, 2022 Popular Post Share Posted January 19, 2022 Just a thought,are u sure it’s the side cover leaking,while u have it off there’s a couple bolts in there that might be loose,they hold the carrier to the housing,might as well check them while the cover is off,pretty common cause for a leak.. 2 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-487420 Share on other sites More sharing options...
mackone Posted January 20, 2022 Author Share Posted January 20, 2022 O.K. thanks everyone for the replies, I'll check the bolts and the backlash while in there. Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-487485 Share on other sites More sharing options...
Popular Post fjh Posted January 20, 2022 Popular Post Share Posted January 20, 2022 6 minutes ago, mackone said: O.K. thanks everyone for the replies, I'll check the bolts and the backlash while in there. Yup what he said! 😇 4:17 4:42 ratio? Check the gears set for wear! these ratios tend to pit out bad if you haul lots of weight! Also if the unit has a lateral torque rod to the frame check the bolts inside as stated ! the housings also tend to crack in that area when equipped with this torque rod! not too much a guy can do but pull the diff and weld it if this happens! 4 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-487487 Share on other sites More sharing options...
Joey Mack Posted January 27, 2022 Share Posted January 27, 2022 I forgot to mention how tight of a space it is to get a large ratchet/breaker bar, inside the top reduction housing to tighten the sh!t out of those 2 inner bolt's. I have a 7/8' , 1/2" drive socket that I trimmed down to fit under the bevel pinion, so I can get a good pull on the bolt in that position, the other one can be hammered in place with a strong 1/2" drive impact, then pulled with a breaker bar.. the hard part is that there is a frame rail in the way...... Just get creative, and work on youre cuss word's, you'll need em' Jojo 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-487981 Share on other sites More sharing options...
mrsmackpaul Posted January 27, 2022 Share Posted January 27, 2022 One thng I have never done is check anything inside when fixing the leaking O ring So I guess that makes it about 5 things I've never done lol Anyway I reckon check the breather, dunno if you have remote breathers on the fire wall as a lot of Macks out here do Pull them apart and wash the gauze and filter material out in petrol (gas) and blow the line out to the diffs Most times when things like that start leaking the breather is blocked, at least thats my experience We have mud wasps out here amd them buggers block things up in a hour or so given half a chance Paul 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488003 Share on other sites More sharing options...
Joey Mack Posted January 27, 2022 Share Posted January 27, 2022 Hi Paul, Here in the Southern U.S. We have "Dirt Daubber's" They pack everything with dirt.. I have to put plugs in the ends of my rolls of hoses and fuel lines, because they will fill it with dirt, some times 3-4 " up the hose, some of my air tools in my shop that don't get much use, have dirt in the air nipples, gotta cap those too... Jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488014 Share on other sites More sharing options...
mechohaulic Posted January 27, 2022 Share Posted January 27, 2022 14 hours ago, Joey Mack said: I forgot to mention how tight of a space it is to get a large ratchet/breaker bar, inside the top reduction housing to tighten the sh!t out of those 2 inner bolt's. I have a 7/8' , 1/2" drive socket that I trimmed down to fit under the bevel pinion, so I can get a good pull on the bolt in that position, the other one can be hammered in place with a strong 1/2" drive impact, then pulled with a breaker bar.. the hard part is that there is a frame rail in the way...... Just get creative, and work on youre cuss word's, you'll need em' Jojo seems to me i had a HD box wrench that i heated up with a torch ; put an off set riser and bend in , cut off the open end was able to put small length of pipe on for leverage to tighten the inner bolt. before the days of silicone we put the brown tar -like permatex on the threads for sealant. sure we all have the one draw in the toolbox with custom made wrenches . problem with old age ; i look at the tools can't remember what i made them for. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488023 Share on other sites More sharing options...
Joey Mack Posted January 27, 2022 Share Posted January 27, 2022 'mech' you made a tool that sounds like the actual kent-moore tool... I made them because the short bone wrench was $750.00... I bet the tool you made worked great, and I think the sealant you are talking about is called: "Indian Head".. really tacky, and stink's like ASS !! Jojo 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488045 Share on other sites More sharing options...
theakerstwo Posted January 27, 2022 Share Posted January 27, 2022 9 hours ago, Joey Mack said: Hi Paul, Here in the Southern U.S. We have "Dirt Daubber's" They pack everything with dirt.. I have to put plugs in the ends of my rolls of hoses and fuel lines, because they will fill it with dirt, some times 3-4 " up the hose, some of my air tools in my shop that don't get much use, have dirt in the air nipples, gotta cap those too... Jojo Dirt Daubber's 10-4 on that.There is here also a small bee that can build a nest inside a 1/4 hose or tube that i have seen. 2 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488047 Share on other sites More sharing options...
tjc transport Posted January 27, 2022 Share Posted January 27, 2022 23 minutes ago, Joey Mack said: 'mech' you made a tool that sounds like the actual kent-moore tool... I made them because the short bone wrench was $750.00... I bet the tool you made worked great, and I think the sealant you are talking about is called: "Indian Head".. really tacky, and stink's like ASS !! Jojo all three of my tool boxes have one drawer that the jar of Permatex Indian Head sealant leaked in, leaving a big brown tar like mess 16 minutes ago, theakerstwo said: Dirt Daubber's 10-4 on that. There is here also a small bee that can build a nest inside a 1/4 hose or tube that i have seen. we have the dirt daubers (we call them mud daubers or mud wasps) here in New Jersey too. they really like building in auto trans and axle vents. plugging them solid. then once the axle or trans warms up it spits oil/gear lube everywhere. Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488051 Share on other sites More sharing options...
Joey Mack Posted January 27, 2022 Share Posted January 27, 2022 I dont use Indian Head any more, I have had many messes from it, too funny. and the dirt daubers caught me one day when I replaced a fuel line on a generator, and no gas came through to the filter. I was scratching my head,, thats when I learned about the little bastards.. too funny...jojo 2 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488052 Share on other sites More sharing options...
Popular Post tjc transport Posted January 27, 2022 Popular Post Share Posted January 27, 2022 i have not used it in probably 20 years or more now. but each box has that one drawer with the mat welded to the drawer by the leaking bottle!! i think it is the big box that still has the bottle, and a battery terminal cleaner in the solidified mass. . 3 Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488053 Share on other sites More sharing options...
Popular Post theakerstwo Posted January 27, 2022 Popular Post Share Posted January 27, 2022 A friend of mine called me last week for some help.He had install a N14 mechanical engine in one of his dump trucks and when he starts it the engine will idle good but you give it some fuel and it will run away on rpm.When we found it the bees or what ever had built a nest in the return line to the tank and was all it needed was cleaning out.Dirt daubers i should say. 1 3 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488054 Share on other sites More sharing options...
mechohaulic Posted January 28, 2022 Share Posted January 28, 2022 3 hours ago, Joey Mack said: 'mech' you made a tool that sounds like the actual kent-moore tool... I made them because the short bone wrench was $750.00... I bet the tool you made worked great, and I think the sealant you are talking about is called: "Indian Head".. really tacky, and stink's like ASS !! Jojo made an attempt to go out to garage today to look in that "special drawer" of home-made tools. the temp will have to go above the single digit first. modern technology (silicone) has replaced all the good stuff. one of the challenges back in the day was to see a transmission put together with this new white stuff silicone and not actual gaskets. Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488061 Share on other sites More sharing options...
Popular Post Mark T Posted January 28, 2022 Popular Post Share Posted January 28, 2022 4 hours ago, Joey Mack said: 'mech' you made a tool that sounds like the actual kent-moore tool... I made them because the short bone wrench was $750.00... I bet the tool you made worked great, and I think the sealant you are talking about is called: "Indian Head".. really tacky, and stink's like ASS !! Jojo ( lol ) some older guys used to call it "shalack" it was common practice to smother mating surfaces with it. And those little bastards ( the mud movers ) also like to build in trailer supply lines. Seen it happen way faster than you could ever think they'd have been able to 3 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488063 Share on other sites More sharing options...
Popular Post Onyx610 Posted January 28, 2022 Popular Post Share Posted January 28, 2022 3 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488066 Share on other sites More sharing options...
Onyx610 Posted January 28, 2022 Share Posted January 28, 2022 Nasty looking 💩 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488067 Share on other sites More sharing options...
mrsmackpaul Posted January 28, 2022 Share Posted January 28, 2022 Permatex and Loctite products are getting harder to get locally as they are getting replaced by cheap crap that looks almost the same but definitely isnt Think it comes from China or somewhere even cheaper if thats possible The good old gasket good, I aviation sealant from Permatex is the proper name and the purple Loctite flange sealant that neved really sets hard are my favorites Permatex copper head gasket spray has had a good result for me Old blokes used silverfrost paint for head gaskets years ago Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488080 Share on other sites More sharing options...
Hayseed Posted January 28, 2022 Share Posted January 28, 2022 Paul, I swear by This Stuff..(& Loctite 680 retaining compound..) Oldest Son is an Apprentice mechanic at the Local New Holland Farm machinery Dealer, & his Toll Box is full of CNH Branded Stuff, that Looks very similar to Loctite Products.. 2 Quote "Be who you are and say what you feel...Because those that matter...don't mind...And those that mind....don't matter." - Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488081 Share on other sites More sharing options...
Vladislav Posted January 28, 2022 Share Posted January 28, 2022 On 1/27/2022 at 10:11 AM, mrsmackpaul said: One thng I have never done is check anything inside when fixing the leaking O ring If you looked inside and saw the big gear with teeth unbroken I think the main check was Ok My curiosity usually leads me to count them teeth and count out the ratio. But not much need in that if thinking global... Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488109 Share on other sites More sharing options...
JoeH Posted February 9, 2022 Share Posted February 9, 2022 (edited) On 1/26/2022 at 8:06 PM, Joey Mack said: I forgot to mention how tight of a space it is to get a large ratchet/breaker bar, inside the top reduction housing to tighten the sh!t out of those 2 inner bolt's. I have a 7/8' , 1/2" drive socket that I trimmed down to fit under the bevel pinion, so I can get a good pull on the bolt in that position, the other one can be hammered in place with a strong 1/2" drive impact, then pulled with a breaker bar.. the hard part is that there is a frame rail in the way...... Just get creative, and work on youre cuss word's, you'll need em' Jojo Reading through this has been helpful, our MR688 has this same leak, wondering if it's a cracked housing or loose bolts. Driving the intermediate axle up on blocks should make access a lot easier? Should lift the frame up away from the rear drive axle. Won't be able to look into this til I drive the truck back from Iowa in 6 weeks though. Edited February 9, 2022 by JoeH Quote Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-488948 Share on other sites More sharing options...
doubleclutchinweasel Posted February 11, 2022 Share Posted February 11, 2022 On 1/27/2022 at 7:18 AM, Joey Mack said: Hi Paul, Here in the Southern U.S. We have "Dirt Daubber's" They pack everything with dirt.. I have to put plugs in the ends of my rolls of hoses and fuel lines, because they will fill it with dirt, some times 3-4 " up the hose, some of my air tools in my shop that don't get much use, have dirt in the air nipples, gotta cap those too... Jojo I had a mud dauber problem on mine. Fuel was returning to the RH tank but the LH tank was almost dry. Pulled the vent off the top of the LH tank, and it was stopped up by the little critters. Cleaned the vent tube, and voila! Air could escape the tank and the fuel could get in. Hateful little bastards... Quote "Eagles may soar, but weasels don't get sucked into jet engines." Link to comment https://www.bigmacktrucks.com/topic/69082-mack-44000-differential-carrier-side-cover-o-ring/#findComment-489140 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.