JoeH
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Everything posted by JoeH
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White smoke is usually antifreeze. Is your head gasket bad? Was it torqued down in the right sequence?
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Pics please?
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I am so glad I have older trucks.
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1973 R685ST
JoeH replied to Rockland Steel's topic in Antique and Classic Mack Trucks General Discussion
I've got a flat back r685 with pretty much same air filter housing. I think that's stock. -
1973 R685ST
JoeH replied to Rockland Steel's topic in Antique and Classic Mack Trucks General Discussion
It's 6 speeds forward (low on the right stick sets every gear to the equivalent of the gear below it, i.e. 2nd acts like 1st, 3rd like 2nd, etc.) And 5 speeds reverse. Nothing pops a grease monkey's eyes open like shifting from 1st through fourth in reverse. And on a straight truck there is no better transmission for offroading. (3rd gear reverse has gotten me through some soft mud many times in our volumetric concrete trucks. Your momentum and continued power application is invaluable.). Only downside is these trucks tend to hit the governor around 62mph. -
1973 R685ST
JoeH replied to Rockland Steel's topic in Antique and Classic Mack Trucks General Discussion
Best thing you can do for your back if you're going to drive this truck every day is convert the cab to air ride. This'll involve a new fuel tank support cross member, deleting the current radiator support arms from the cab (replace with a couple diagonals from the frame) and the hood bumpers on the top of the firewall need to be converting to a roller style instead of the rigid type. Might be more, but those are some important things to watch for. -
Just watched the video in the ad. It's a monster. I want it.
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It's the kind of thing someone like Jay leno might take an interest in. Could possibly even mount it on a rail car for transport, some freight routes are good for some pretty serious height... Just trying to be an optimist, that is some really nice old iron. I would not mind using that as a hedgerow next to the railroad along the back of our 7 acres.
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2019 mack triaxle dump rattle since new
JoeH replied to vinny933's topic in Driveline and Suspension
If the dealers going to give you the BS run around then squirt some caulk or foam in there and call it a day. Wonder if the insulator pads the factory put in are even the right size. Maybe they used some from the 38k rears..... -
Is the water pump part of the fan pulley or is that the water pump between AC and Alternator? My Cummins dodge is set up with water pump separate from fan.
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2019 mack triaxle dump rattle since new
JoeH replied to vinny933's topic in Driveline and Suspension
They're not hard to replace, but they take big guns and floor jacks, and a BA torque wrench. Because it's got a warranty from manufacturer defects I'd make them do it. -
2019 mack triaxle dump rattle since new
JoeH replied to vinny933's topic in Driveline and Suspension
Didn't know there were 46k camels. 38, 44, 55, 68, 80, is what I thought there were -
Change it, run it for 15 seconds, and shut it off. See who the belt is slipping off of or rubbing against. I'll bet you'll find someone not aligned properly.
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Seems the wheels get left behind when you pick em up. Good opportunity to get em spinning.
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They make equipment that can pick it up to work on, I'm sure there's a way to lift it onto the tracks. Just gotta get it to the tracks.
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Understood. That's a weird serpentine setup, I would have expected crank, water pump, alternator and tensioner to be together and the AC to be on it's own, driven by the fan/water pump. Are you buying belts from the dealer or cheap Napa belts? Napa is fine for cars etc but they're sh*t for trucks IMHO.
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2019 mack triaxle dump rattle since new
JoeH replied to vinny933's topic in Driveline and Suspension
They probably installed wrong size ones, from a lighter Camelback. I'd bitch because it's a new truck. Older versions of Camelback don't use them. Our 79 R model doesn't use those #7 or the sideways torque arm to the frame. Has rubber trunion bushings and the axles walk as much as 8 inchs out of alignment from each other. -
To clarify, as I'm not real familiar with CV's, the thin belt is to the air conditioner from the fan? Separate from the serpentine belt? Take the belt off the AC for a day (driver will hate me) and see if the serpentine belt holds up. AC is a creature comforts, not mandatory. Engine water pump and fan spinning are mandatory.
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No it should be able to run anywhere. Something isn't right on it. Check engine damper wheel run-out. Maybe the crankshaft is bent.
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Don't need to truck it far, just make sure the axles spin free and put it on a freight line to where ever. We donated a couple rail cars a few years back to the New Hope Ivyland Railroad. We still had a rail siding attached to SEPTA's R5 route, so they were able tow them out with a freight train in between the Commuter train schedule.
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Post pictures of tensioner etc. My 12v Cummins dodge belt likes to rub on the arm of the tensioner because the AC compressor pulley is some cheap China knock off. Jumps one rib on the AC pulley then it's happy, after it eats one rib off the belt though...
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That trucks not getting anywhere under it own power without some dead weight in the back. That front axle is buried deep. A gentle tug from a 4x4 pickup may help...
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Can you delete the worn lift pump and install an electric lift pump? Make a cover plate for the old lift pump location?
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RAT ROD FIRST SHOW-66dc75
JoeH replied to Red Horse's topic in Antique and Classic Mack Trucks General Discussion
I have two old 237 horses, used as yard trucks once in a blue moon. They both smoke. Never get worked hard. Injectors good be lazy and worn out, sleeves could be worn out or need to be re-honed, valve stem seals could be dry rotted and leaking oil... (I forget if these engines even use valve stem seals) If I re-honed them I'd have to do the brake in procedure which isn't possible on these. -
Wikipedia has the story. Basically the company has been around since 1908? Used to make auto cabs for a lot of companies until GM bought em out. Tags were just their way of putting their name on their product.
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