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1st Gen. Ram - All TopicsDiscussion for all Dodge Rams prior to 1994. This includes engine, drivetrain and non-drivetrain discussions. Anything prior to 1994 should go in here.
The '91.5-'93 fan hubs are a special breed and near impossible to locate.
I rarely even see one pop up on E-bay.
The '89-'91.0 and the later P-pumped 12V and 24V ones are interchangeable and offered new.
They will put you fan in a bad location [over to the drivers side several inches] for you fan shroud and they stick out toward the radiator too far. The pulley wheel is different between the two styles of hubs as well and if you bolt it on the wrong style it will throw your serpentine belt out wack.
The '91.5-'93 fan hubs are a special breed and near impossible to locate.
I rarely even see one pop up on E-bay.
The '89-'91.0 and the later P-pumped 12V and 24V ones are interchangeable and offered new.
They will put you fan in a bad location [over to the drivers side several inches] for you fan shroud and they stick out toward the radiator too far. The pulley wheel is different between the two styles of hubs as well and if you bolt it on the wrong style it will throw your serpentine belt out wack.
The Napa one will not work on your '93.
your knowledge amazes me...
I'm even more amazed something like this carnage,even happens to begin with.
It's horrible. This year is kicking us in the **** on it's way out. Welded the snout to get us home only to find out the a/c compressor is also seized. Then napa sold us the wrong belt, but we tracked one at O'Reillys in the barrio. I have a good Cummins number 3923004 and a generator client can get them, but it has to come out of Denver. This year just keeps on giving! @-)
I have never seen one crack in pieces like that!!! Not sure what would cause that....most likely a flaw in the casting and perhaps a bad bearing that got super toasty? But as Oliver said the 91.5-93 is a special unit and the few I have seen on E-bay are usually upwards of $300 for one.
I have never seen one crack in pieces like that!!! Not sure what would cause that....most likely a flaw in the casting and perhaps a bad bearing that got super toasty? But as Oliver said the 91.5-93 is a special unit and the few I have seen on E-bay are usually upwards of $300 for one.
We welded it to get us home. I will have to keep driving it until I can find a better one.
Replaced the water pump and found the only belt in town for an intercooled Dodge without A/C.
Never seen a water pump and A/C compressor seize at once.
I'm sick of this year.
I have a spare in the shop if you need one, PM me.
Thanks for the offer Oliver, but I will let someone like mhuppertz grab it since he needs it more then I do. Plus I plan on using the 89-91 and 94-02 style and then making a custom shroud instead.
The fan hub houses a large non-serviceable interference fit bearing. I had the pleasure of replacing one as preventative maintenance due to a free NOS bearing falling in my lap during the last build (72 d200 with 93 cummins)
The trick was to put the housing in the oven and then the bearing just slid into place. I'd imagine that over time perhaps that the stretching/strain on the casting could cause a crack/fail. Perhaps the bearing was heating up which weakened the cast iron. Sorry for your problems!
Post Mortem:
My drive system has been noisy for a very long time. This summer I started losing freon and it took a Snap-On sniffer to figure out it was leaking out of the compressor front seal. A month ago I started hearing an intermittent noise that freaked me out, Reminded me of how a 'Cuda I once had that I put solid motor mounts. I have stiff poly mounts to I knew the engine wasn't touching the frame directly. Then the issue would vanish before I could get the hood open to diagnose.
I did notice the clutch on the A/C compressor smoking a little, but it seemed to be spinning freely when I checked it. Then the other nigh I had steam coming out from the engine, opened the hood and it appeared the upper radiator hose was squirting antifreeze. Changed the hose buy couldn't find a hole. Then yesterday I was driving to a job and it started steaming again. Made it to the job (quite a ways from my house) and opened the hood and coolant was pouring out of the water pump. So I guess the other nigh the water pump was squirting up to the radiator hose making it look like it was actually the hose leaking. Even fooled my professional mechanic son.
Anyway, I worked for 4 hours setting up a teleconference room, then came out and added coolant to warm it up a bit to make it easer to work on since a storm was blowing in and it was already below freezing. That's when the crap hit the fan (almost literally). The belt started screeching then BANG, the fan support snout snapped off. During the autopsy we found the snout had been cracked on one side for a long time, it was black in the crack.
If I were running a mechanical fan it probably would have let go a long time ago, but I converted to electric fan early on because I hate wasting 30+ horsepower. I also sectioned my radiator support and tilted the radiator straight up to allow for more room.
All that to say then it broke it didn't hit my radiator, thank goodness.
My wonderful son left work early and chased parts, and that's when we found out that the 1st gen intercooled fan support is not available new anywhere.
Napa also sold us the A/C belt when we specifically requested the non-a/c one to bypass the locked compressor.
So we in a lurch. We could have bypassed the fan pulley (which is just an idler on my truck) but the crank sensor and mount were in the way. Then my son got the brilliant idea to go over to a client of mine, Power Generation Service, who is also a Cummins repair outfit.
They didn't have the part of course, but they did have a monster stick welder and offered to try to weld it up. We had nothing to lose, New Years Eve, storm bearing down, wife at home thinking about the Kiss song "Beth" (just kidding). They welded it up and it didn't hurt the bearing, so we drove back and put it on while my son's friend grabbed the (apparently) last non-A/C fan belt in Albuquerque.
Put it all together and added 3 gallons of coolant and viola, no leaks and no drive system squeaks or noise for the first time in many, many years.
Made it home in time, feeling blessed for they way everything turned out.
12-31-2018, 02:46 PM
