Starting 8v71t after 20+? years - Many questions

digesterman · June 05, 2015, 05:56:10 AM

Just know how to shut it down if for some reason it wants to run away, know where the air or fuel shut off is just in case

hunter97321 · June 05, 2015, 06:43:23 AM

We have a board to cover the air inlet in case of runaway. I will try to find someone to test the fuel.

In this part of Oregon, we don't have to deq/EPA test for licensing. So I don't think the fuel smoking a little is an issue. If the injectors are still working like before, it never had an issue with excessive smoke.

The speedometer/odometer on the dash shows 3347 miles. I believe that it was new when the engine was remanufactured. While there is some surface rust on the engine there are no oil leaks visible.

I still need to find some batteries. Still can't look at it until next week.

I found the Detroit Diesel v71 service manual in the bus so I have some reading to do.

TomC · June 05, 2015, 01:40:09 PM

There is a video on Utube starting an 8V-71 compressor after 20 years. Lots of cranking (get new batteries), lots of white smoke, then just started as though was running yesterday. Old high sulphur fuel just doesn't go bad easily. I had the fuel in my truck polished after 10 years. Make sure the rack is loose, put in new batteries and try it out.. Good Luck, TomC

gumpy · June 05, 2015, 03:53:43 PM

What we have here, is a wonderful opportunity, should you accept the challenge. Too bad about grandpa's health, but I bet he'd be thrilled to see you
bring that bird back to life.

PP · June 05, 2015, 07:22:12 PM

Quote from: gumpy on June 05, 2015, 03:53:43 PM
What we have here, is a wonderful opportunity, should you accept the challenge. Too bad about grandpa's health, but I bet he'd be thrilled to see you
bring that bird back to life.

Ditto

hunter97321 · June 22, 2015, 04:59:32 PM

Managed to get a couple of Group 31 batteries. Cleaned all the terminals and had to replace one of the battery cut-off switches because a nut was stripped. Replaced the ignition switch ($10.00 from O'reilly Auto Parts with 4 keys) as it was cheaper than having the locksmith make a key. Had my son get at the back of the engine and be ready with a board in case of runaway. He was also told to video the start. I was expecting this to be a real pain to start...hit the key and it started before my son could start the video. He said it didn't turn 3 cranks and it was going. One puff of black smoke about 4 feet and then no smoke at all. As far as I can tell it runs like new. https://www.dropbox.com/s/7jb3sypctg1ylh7/20150622_150836.mp4?dl=0 Idled right down to 600 rpm and was rock steady. I didn't run it very long as the gauges weren't working. So I have video of it about 5 seconds after it started and then then we restarted it about 10 minutes later to see where an oil leak was coming from. Had to shut it off with a board because it didn't turn off with the key. How is it supposed to shut off?

Second video is shorter but it includes the whole start sequence. https://www.dropbox.com/s/xaz0hpgjzt9m9xl/20150622_152757.mp4?dl=0

This is off the side of the Allison 5 speed transmission. Not sure what model it is. Anyone know what the part hanging from the red cable does? what it's called? https://www.dropbox.com/s/gvbq0dbjnx8d856/Transmission.jpg?dl=0It looks like it was threaded to the transmission and it pumps tranny fluid out of the hole that it went into quite efficiently. Whats the best way to get to the transmission? I'm not a small guy so I need to figure out the easiest way in. Pull a tire from the tag axle?

I am also having a heck of a time trying to find the VIN. Grandparents can't find the title so I need find it to get the title transferred.

luvrbus · June 22, 2015, 05:17:32 PM

? is your grandad Steve DeMarco,the VIN should be on a weld plate either on the cross brace above the bumper or on a up right brace on the passengers side

hunter97321 · June 22, 2015, 05:22:57 PM

luvrbus - Sent you an e-mail.

eagle19952 · June 22, 2015, 08:29:59 PM

Had to shut it off with a board because it didn't turn off with the key. How is it supposed to shut off?

an eagle shuts down normally with an air activated slave on the governor.
it needs a minimum of 30 psi.
next time charge the air system with a portable compressor.
start from the rear.
the key switch often has also a secondary run switch toggle...it must be on too.
show a picture of your dash and switches.

Scott & Heather · June 22, 2015, 11:28:10 PM

I'm pretty sure I agree with the above post, it won't shut off until you build some air pressure. The shutoff air cylinder needs air pressure to shut off.

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eagle19952 · June 23, 2015, 10:53:35 AM

You need (also) to build/make/bend a 1/8" or 3/16" rod about 2" long and learn which lever on top of the governor is the fuel shut off, where to hook it and how it works.

Probably as important as the air suffocater board...maybe more.