I found out today that if the battery is disconnected while the engine is running you cannot shut the engine off.
New to me 😲
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85Hokie
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BX-25D ,PTB. Under Armor, '90&'92-B7100HST's, '06 BX1850 FEL
Tis true on your machine and many others ........... older models, I.E. = B7100 will run and can be cut off without a battery.
Even more strange is that diesels can run backwards. You probably won't ever experience it, but I did once.
One of the first jobs I had was driving a Euclid at a local stone quarry. Short version - I was backing to the edge of a large pile of stone we were making and got too close. The truck went off the pile backwards. There was enough traction to stall the engine and restart it backwards. It ran rough but it did run and puked the oil out of the air cleaner out and all over the fender. Truck stayed upright and the ride wasn't as scary as you'd think. It was all slow motion.
One of the first jobs I had was driving a Euclid at a local stone quarry. Short version - I was backing to the edge of a large pile of stone we were making and got too close. The truck went off the pile backwards. There was enough traction to stall the engine and restart it backwards. It ran rough but it did run and puked the oil out of the air cleaner out and all over the fender. Truck stayed upright and the ride wasn't as scary as you'd think. It was all slow motion.
Daren Todd
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We had that at work.... but without the puking oil.
One of our locations replaced a 300hp diesel on one of our high pressure water pumps. After the engine replacement it wouldn't pump worth a darn.
It sat for a while and then got shipped to my shop. I had another tech bump the engine over and realized it was spinning the wrong direction.
After calling our engine supplier, we determined that they sent us a marine engine that was set up to run the opposite direction for balance in a boat
A two cycle engine will run backwards also, and keep running just fine. It all depends on which way you start it.
North Idaho Wolfman
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Well the battery was still out of the tractor from the repairs I had to do to the burned wire harness. I used a jump starter to start it and disconnected the jump starter after it had started. I let it run for a couple minutes just to check that my repairs were ok then flipped the key off .. nothing happened .. it kept running just fine. I was not sure exactly what was going on, so I quick disconnected the air intake hose and blocked it to kill the engine. I thought maybe I had botched one of my repaired wires. I hooked the jumper up to it again restarted it, and immediately shut it off with the key, and that worked fine. I thought about it, tried it again with disconnecting the jumper after it started and figured it out.
Daren Todd
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One thing to take into account with modern diesels.
Do not disconnect the battery while the engine is running.
On some setups the alternator is regulated through the ECM. Disconnecting the battery will cause the power to spike from the alternator. Which could very well fry the electronics.
Do not disconnect the battery while the engine is running.
On some setups the alternator is regulated through the ECM. Disconnecting the battery will cause the power to spike from the alternator. Which could very well fry the electronics.
When I was a kid, I had a 100cc Suzuki motorcycle. We updated the ignition coil with a CDI unit. Every so often, I would kick start that thing and it would start running backwards.
Fun times.
Just for a clarification for anyone unfamiliar with the equipment. It wasn't engine oil on the fender. The Euclids had a large oil bath air cleaner that resided over the right fender. This was in a dusty stone quarry, and we did engine oil changes bi-weekly. I think we did air cleaners every week, and they did catch lots of dust. There was a thick oil/limestone sludge in the air cleaner pan that had to be scraped loose.
Daren Todd
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Massey Ferguson 1825E, Kubota Z121S, Box blade, Rotary Cutter
That's typical with oil baths. Whomever does service on them needs to wipe out the bottom of the pan before putting fresh oil in them.
I go one step further with them in my shop. I have a parts washer that works similar to a commercial dish washer. So I take the filter element and the bottom pan and run them through the parts washer
I have probably 3 or 4 units still with air cooled deutz engines and the oil bath air filters still in my fleet. But they have been popular sellers in my used equipment. So they will probably sold off pretty soon.
This was back in the late 60's and I remember some details like the sludge. Not recalling what we did with regard to cleaning the element. The quarry was on top of maintenance items. We did half days on Saturdays for maintenance and cheeseburgers.
Daren Todd
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Deutz had mechanically governed air cooled engines with oil baths up to 2013. Being in the rental buisiness, I loved them. They had 3 safety switches on the whole engine. Temperature, oil pressure, and a shut down switch on the blower belt.
Never had service calls on them.
In 2014 they switched to water cooled, ecm and all the electronics
BAP
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Most likely those Euclids had Detroit 2 cycle Diesels or AKA Screaming Demons, in them. They would run backwards pretty easily if you weren’t careful with them.
Years back I got a trolling motor shaft at a farm sale and modified the clamp mount so I could glue a piece of wood to a canoe and clamp the housing there. I then took a weed eater 2 cycle engine and adapted it to turn the propeller shaft. When I started the little engine I discovered the propeller I had on the thing turned the wrong way. I could get a reverse prop, but I anted to devise a method to start the engine the opposite direction.
I never did a good job of getting that problem solved, but the setup would move a canoe up the river at a pretty good rate. Carried an extra qt of fuel to ensure getting home without a paddle.
