FayettesFinest Posted November 13, 2013 Share Posted November 13, 2013 My truck is leaking oil all over the wheel. I'm thinking it's a wheel seal, or hub seal if these even have them. I'm guessing it's a relatively simple task, but I'm just getting into working on big trucks, so I just wanted to see what I'm up against. Any feedback would be really appreciated. Thanks! Quote Being in the process of getting your CDL's is like sitting on death row... Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/ Share on other sites More sharing options...
NoClueJoe66 Posted November 13, 2013 Share Posted November 13, 2013 Is it leaking into the drum? Or leaking on the outside of the wheel? Quote This message was brought to you by Hargraves Potted Meat Product. Chopped full of "Peckers & Lips" since 1933 - John Boy & Billy Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-216481 Share on other sites More sharing options...
FayettesFinest Posted November 13, 2013 Author Share Posted November 13, 2013 Outside of the wheel. Quote Being in the process of getting your CDL's is like sitting on death row... Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-216483 Share on other sites More sharing options...
NoClueJoe66 Posted November 13, 2013 Share Posted November 13, 2013 I would just pull the axle out replace gasket and blue glue it real good.....be sure to top off the rearend and you should be good to go, but wait on others to reply also because I could possibly be missing something Quote This message was brought to you by Hargraves Potted Meat Product. Chopped full of "Peckers & Lips" since 1933 - John Boy & Billy Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-216486 Share on other sites More sharing options...
FayettesFinest Posted November 13, 2013 Author Share Posted November 13, 2013 I probably should have specified, but it's on the steer axle. Quote Being in the process of getting your CDL's is like sitting on death row... Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-216488 Share on other sites More sharing options...
2stacksuperdog Posted November 13, 2013 Share Posted November 13, 2013 Sounds like a leaking hub cap. Quote Matt Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-216495 Share on other sites More sharing options...
NoClueJoe66 Posted November 13, 2013 Share Posted November 13, 2013 I agree with 2 stack Quote This message was brought to you by Hargraves Potted Meat Product. Chopped full of "Peckers & Lips" since 1933 - John Boy & Billy Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-216511 Share on other sites More sharing options...
KECorbin22 Posted November 13, 2013 Share Posted November 13, 2013 Check to see that hub is not overfilled, should be on outside ring of sight glass, check hub plug (soft rubber and vent hole not stop-up) if plastic sight hub it does get old and brittle ,subject to hairline cracks, it can be replaced with service kit. If replacing entire hub cap, wouldn't recommend no silicone on gasket, completely clean mating surfaces (no oil residue) and don't overfill. Quote Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-216522 Share on other sites More sharing options...
FayettesFinest Posted November 13, 2013 Author Share Posted November 13, 2013 Awesome! Thanks for the feedback, guys! Now, I don't know if it matters or not, but it's what I think is the old style. The one that's shaped like a huge nut. Regardless, is this a rough job? Doesn't sound like it, but every time I think something is going to be an easy job, it turns into a disaster and a half... Quote Being in the process of getting your CDL's is like sitting on death row... Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-216524 Share on other sites More sharing options...
39 Baby Mack Posted November 13, 2013 Share Posted November 13, 2013 Stemco #343-4025 hub cap should get the job done.Ron Quote Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-216526 Share on other sites More sharing options...
krismoriah Posted November 18, 2013 Share Posted November 18, 2013 Just curious if you are trying to make a living in this truck or just fooling around the farm? I cant imagine having a 1973 mack and not knowing much about working on them.. at least you will learn alot quick!! Clean everything up with brake clean... then drive it down the road to pinpoint where its coming from.. if its the little button leaking in the center..you can buy those for like a dollar and keep on trucking. If its the sight glass then its cheaper just to look at the number on the hubcap and go to napa and get u a new one. If you dont have a dollar for the button then soak it in brake fluid and it will soften and swell it up a tad and get you by for awhile. Quote Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-217428 Share on other sites More sharing options...
FayettesFinest Posted November 19, 2013 Author Share Posted November 19, 2013 Just curious if you are trying to make a living in this truck or just fooling around the farm? I cant imagine having a 1973 mack and not knowing much about working on them.. at least you will learn alot quick!! Clean everything up with brake clean... then drive it down the road to pinpoint where its coming from.. if its the little button leaking in the center..you can buy those for like a dollar and keep on trucking. If its the sight glass then its cheaper just to look at the number on the hubcap and go to napa and get u a new one. If you dont have a dollar for the button then soak it in brake fluid and it will soften and swell it up a tad and get you by for awhile. My old man knows them in and out, but when I have a question I often get the "I'd have to look at it" response. I'm going to end up doing most of the work on it because he works 40-65 hours a week and I work 40-45 hours a week at the moment. So I'm getting batism by fire so to speak. I do my own work on my pickups and I work on some equipment at work so I'm mechanically inclined. But working on big trucks is just opening a new chapter.Running this truck isn't going to be an every day affair. It's more of a specialty truck. My dad knows big wigs for a pipeline company and they said they'd put it to work once it's up and running, along with another gas company. Quote Being in the process of getting your CDL's is like sitting on death row... Link to comment https://www.bigmacktrucks.com/topic/33488-1973-r-model-hubwheel-seal/#findComment-217470 Share on other sites More sharing options...
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