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Engine Stand for 671 Detroit Diesel


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  #21  
Old 08-28-2019, 09:26:12 PM
Tracy T Tracy T is online now
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Default Re: Engine Stand for 671 Detroit Diesel

If you need the crankshaft out for whatever reason, the engine has to come out. if you are doing a inframe you can replace rod/ main bearings pistons liners and all head work. But to do a complete overhaul it has to come out.
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  #22  
Old 08-28-2019, 11:58:07 PM
Vanman Vanman is offline
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Default Re: Engine Stand for 671 Detroit Diesel

Yeah, this engine actually isn't in to start with. It's going to replace a seized NH Cummins when it's all done. These are horizontal engines, under the frame, so would be somewhat more difficult to do an in frame overhaul.

The Detroit was purchased along with a ten speed Roadranger for a couple hundred bucks. It purportedly ran, but had a knock in it. I'm just going to go through it entirely and thoroughly as I don't ever want to do it again lol.
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  #23  
Old 08-30-2019, 03:59:19 PM
Vanman Vanman is offline
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Default Re: Engine Stand for 671 Detroit Diesel

Well damn. The gear motor that came with the engine stand for turning the engine over was inappropriate for the task. Too fast and too weak. So I found one that develops around 10 times the torque at 1/5 the speed. But, as they are wont to do, UPS has broken it's feet. It was not packed properly, so UPS cannot fully be blamed, this time. It's a neat vintage one and it ticks me off to see such a thing damaged. Dammit.
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  #24  
Old 08-30-2019, 07:20:18 PM
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Default Re: Engine Stand for 671 Detroit Diesel

Pisses me off that people think 'oh well if it's broke blame the carrier'. A 20 pound thing isn't gonna be protected by a glob of newspaper ffs.
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  #25  
Old 09-05-2019, 06:19:50 PM
Vanman Vanman is offline
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Default Re: Engine Stand for 671 Detroit Diesel

Looks like the seller is going to send another gear motor. I gave advice for packing it better. Fingers crossed.

Meanwhile, I got these bolts from McMaster Carr. 3/4-10 x 2-1/4", grade 5. We'll drill and tap the engine stand adapter, and drill a couple new holes in the hub itself to make it all work. With 4,000 lbs, hanging 3' from the mounting hub, these bolts provide a safety factor or four. So I think we'll be OK.

Keith
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  #26  
Old 09-22-2019, 09:40:23 PM
Vanman Vanman is offline
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Default Re: Engine Stand for 671 Detroit Diesel

The second gear motor arrived intact. It’s not in as nice a condition, so I will combine the best of both, while simultaneously switching the output shaft to the opposite side.

Keith
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  #27  
Old 09-22-2019, 09:46:56 PM
K-Tron K-Tron is offline
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Default Re: Engine Stand for 671 Detroit Diesel

I feel your pain, the only clear space left in the house is the dryer top

Chris
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  #28  
Old 09-22-2019, 10:41:43 PM
Vanman Vanman is offline
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Default Re: Engine Stand for 671 Detroit Diesel

It’s true! I could have worked on it in the backyard, but the laundry room is air conditioned if I leave the kitchen door open.

Keith
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  #29  
Old 09-24-2019, 10:12:49 PM
Vanman Vanman is offline
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Default Re: Engine Stand for 671 Detroit Diesel

Gear motor is all put together, just need to get some oil for it.

The first one, with the broken feet had the better motor, motor bearings, and paint, so used the bulk of that one. The second one had better output shaft and bearings, so used them along with the unbroken side cover. All gears looked good, so no problem there.

Put together a quick controller. Motor is direct current, so a rectifier is inside the controller. Master switch supplies AC to the rectifier and from there the field. Next switch supplies DC to the armature. A “four way” light switch allows for the reversal of armature current. Controller is attached directly to the motor with a short nipple.

Ready to go put the engine stand all together, and mount the engine to it. We’re going to set it all up in the back of a semi truck trailer, as a workshop, using a forklift.

Keith
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  #30  
Old 09-25-2019, 04:40:53 PM
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Default Re: Engine Stand for 671 Detroit Diesel

I have always appreciated the quality and pride in craftsmanship that is evident in Bodine motors. My favorite company would be one which embodies these values, and cares enough to support their older products, at least in terms of information, but ideally with parts too.

But evidently that company is not Bodine. They cannot even tell me what gear lube to use in mine, simply because it is old. I am really rather surprised. Looking at the machine, I would have imagined a company that could at least provide me with some information and documentation, and maybe even some of the simpler parts.

I’d bet that the Bodine company was indeed just like that, back when my gearmotor was made. Now they seem to embody all of the reasons why I prefer not to buy anything new. Because modern companies suck.

So, what kind of oil should a gear box like this use? The worm appears to be steel, and the worm gear appears to be a yellow metal, some kind of bronze, if I had to guess.

Keith
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Old 09-25-2019, 05:16:58 PM
K-Tron K-Tron is offline
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Default Re: Engine Stand for 671 Detroit Diesel

48 x 36 is about 1750rpm, so I would imagine that you would want to use a medium weight oil. I use GL-1 mineral oil in all of my worm drives whether they have yellow metals in them or not (GL-1 oils have no extreme pressure additives). At that reduction ratio, I would say a 50 weight oil would suffice. 90 might be too thick. You have a nice vented plug on the top of the housing, you could test different thickness oils and watch with a flashlight to see how well the oil is wicking and climbing the gears.

Chris
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  #32  
Old 09-26-2019, 12:14:56 AM
Vanman Vanman is offline
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Default Re: Engine Stand for 671 Detroit Diesel

Well, between this thread and one going on the dreaded FB, I thought that I would dig a little deeper. Wow. The worm drive gear lubricant rabbit hole is a deep one!!

https://www.machinerylubrication.com...ate-worm-gears

Seeing as how the now useless Bodine company could only tell me that my gearmotor “has been obsolete for at least forty years”, I really want to take good care of it!

You know they regret having built such good products, and only want to replace them, rather than make money servicing them.
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  #33  
Old 09-26-2019, 01:08:37 AM
The Diesel Doctor The Diesel Doctor is offline
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Default Re: Engine Stand for 671 Detroit Diesel

Quote:
Originally Posted by Vanman View Post
I have always appreciated the quality and pride in craftsmanship that is evident in Bodine motors. My favorite company would be one which embodies these values, and cares enough to support their older products, at least in terms of information, but ideally with parts too.

But evidently that company is not Bodine. They cannot even tell me what gear lube to use in mine, simply because it is old. I am really rather surprised. Looking at the machine, I would have imagined a company that could at least provide me with some information and documentation, and maybe even some of the simpler parts.

I’d bet that the Bodine company was indeed just like that, back when my gearmotor was made. Now they seem to embody all of the reasons why I prefer not to buy anything new. Because modern companies suck.

So, what kind of oil should a gear box like this use? The worm appears to be steel, and the worm gear appears to be a yellow metal, some kind of bronze, if I had to guess.

Keith
Keith, A fine gear box like that deserves the best. The first thing that came to mind was Whale oil. But you can`t buy that anymore. ALClick image for larger version

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  #34  
Old 09-26-2019, 09:12:57 AM
Tracy T Tracy T is online now
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Default Re: Engine Stand for 671 Detroit Diesel

I would look and see what ramsy uses in their winch gear boxes, thats basically what you have is a winch gear box. the yellowish gear is the weak point and is also found in winches. Sort of a saftey feature i guess if you get to pulling on something to hard. I know I would rather that gear strip as a cable snap and cut you into! I had a huge braden winch mounted on a 40 some model dodge power wagon pto driven that stripped that gear, believe it or not i called some outfit in tulsa OK and they had two on the shelf!
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  #35  
Old 09-26-2019, 08:25:49 PM
Vanman Vanman is offline
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Default Re: Engine Stand for 671 Detroit Diesel

Some of those PTO driven winches have a shear pin on the input shaft, rather than stripping the gears.

Diving a little deeper. Applying the information found in the above link to my gear set, it would seem that ISO 460 oil is the ideal viscosity. So I looked for conversion between that and SAE oil and found this chart. ISO 460 lines up with SAE 140. Bingo! https://schroederindustries.com/site...sification.pdf
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  #36  
Old 09-26-2019, 08:44:32 PM
pegasuspinto pegasuspinto is offline
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Default Re: Engine Stand for 671 Detroit Diesel

Steam cylinder oil was/is commonly spec'd for worm drives. If your old oil had a bit of a rancid stank to it, that's what it had in there. Lacking that, go for something thick n tacky, maybe Lucas oil.
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  #37  
Old 09-26-2019, 08:56:10 PM
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Default Re: Engine Stand for 671 Detroit Diesel

140 is a common lube. military used it in jeep rears, my dozer and loader use it in the final drives. good stuff but not in a transmission that sees cold tempatures!
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  #38  
Old 09-27-2019, 01:22:31 AM
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Default Re: Engine Stand for 671 Detroit Diesel

Bought a gallon of GL-4, SAE 140 gear lube tonight. Didn’t have it in quart bottles, unfortunately.
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