6-71 Detroit Diesel Genset part two

[wild800]

Here are the Pics, I hope, of the two items in question, The govenor and the linkage on the blower. Any help appriciated. Is the cover needed on the Govenor?
What kind of device goes to the linkage? and does it (not being there) interfere with the start and/or run circuit. I intend to restore the genset(s) to orginal configuration as installed in 1945. I hope to do this within reason to accuratly display this area.

Mike

[K D Redd]

The linkage on the blower is the EMERGENCY SHUTDOWN. Be sure it work because DD (Jimmies) can RUN AWAY and the ONLY way to shut them down is use the emergency. A trucker friend of mine told me ONE of the reasons DD's run away is the uses of multi-viscosity oil. Service manuel say use strait 40 weight oil as a first choice oil even to minus 25 degress F. 30 weight is a second choice. Thrid choice: 15W-40 is ONLY recommended for prolonged cold ambient temperatures below 32 degrees F. The book recommends block heater if starting is a problem.
DD's will also run away if it is getting long in the tooth and the blower seals are leaking.
This same trucker said if you run the engine out of fuel, closing the E. shutdown door will help prime the engine again. DD's can be a bear, I am told, to get running if you run them out of fuel. I have little first hand of this with a DD.
Kent

[John Hanson]

Mike, if you don't have a cover on the gov, you'll get oil all over! If you get stuck, I've got a service manual for the 6-71's and could probably be convinced to get a copy made for you.
As far as oil goes, I run 30 wt in mine all summer, but 40 would probably be better.... she doesn't show much pressure when idling hot. They recomment Delo 100, not 400 like the oil dealer will try to tell you... and they don't like multi-vis oils. Mine uses about a gallon of oil every 80 hours, running at 1700 rpm all day long on the crusher. Great little engine, but a bit noisy, so we're going to go to electric in the next year or two, to try to keep the neighbors a bit happier.
John

[wild800]

John,

Thanks for the input. I have also heard that they like straight weight 30. I'll be using that once I do get start. I'll drain and then put fresh in as the the existing oil doesn't look/smell bad at all. I'll have to make sure the oil pressure gauge is hooked up. Here is a Pic of the instrument cluster.

[Rick McKay]

Hi Mike,

I have a 671 military gen set. The linkage on the air shut off is supposed to be hooked to a solenoid. I think it is wired to shut the engine down if there is excessive amp-draw, or engine overspeed condition. My engine also has a woodward governor like yours. You should be able to make your own replacement cover out of a piece of flat steel. The button on the side of the governor is hooked directly to the injector rack, so you can check the rack travel by pushing the button in (about 1 inch of travel) and letting it snap back. When starting the engine you have to hold in on the button until oil pressure builds up, as the woodward governor won't allow the engine to run without any oil pressure(safety feature). When the engine is running, you can shut it down by pulling out on the same button.

Any questions, feel free!

Rick

[wild800]

Rick,

Thanks for the info. I'll fabricate a cover for the gov. and do you have a part number for the air shutoff control or any diagrams??

Regards,

Mike

[Rick McKay]

According to the book on my gen-set (military) the part number for the solenoid is 1119752. It shows the same number for mfg's part no. and Corps of Engineers part no. I'm not sure, but it might be a delco number. My unit is 24 volt, as would be the solenoid, so if your set is a 12 volt unit, you'll have to find the equivalent 12 volt solenoid.


Rick

P.S.:
Cover part # 3249150
gasket part #3249110

[wild800]

Rick,

Thanks for the part numbers!! Yes this is a goverment issue machine and it is 24 volt. It still resides in it orginal compartment. Once I get the genset fired then I can charge the main engine(s) batts and then fire them up. Also get the lights and electric motors, electronics etc.. going.. Here are a couple of pics of the project.

Mike

[wild800]

John,

I would really like a copy of the service manual. Please let me know what you need.

Thanks so much!

Mike

[John Hanson]

Mike, I sent you a PM.
John

[Rick McKay]

I have the book for my military unit: TM 5-5010 Generator Set Portable General Motors Model 6903. January 1955.

My book has maintainance, overhaul, and parts instructions. Maybe there's one floating around out there on ebay!

Rick

[Gunny]

Mike:
There more to the cover than it just being a flat piece. There is an adjustment that goes through it.

Get the numbers off of the tag on the governor, part number, etc. Call Woodward and they get you on the right track with the right part. Person I know who knows more about those governors than anyone else on the planet is Andy Miller, works for Governor Control Systems (Woodward distributor) (954)462-7404. They are in Ft Lauderdale FL so keep the time difference in mind.

[Walter J.]

I agree Andy is the best. Send him an email with pics and he responds right away.

[wild800]

Gentlemen,

I thank you for the info about Andy Miller. I will be contacting him about the cover(s) and the govenor. I have included a pic of the battery rack and one looking between the gensets

[Rick McKay]

I checked the woodward on the power unit on my sawmill, and the cover is just a flat piece. The adjustment is in the inch thick section with the button. My Gen-set is out on loan 50 miles away right now, but I will check it when I get over that way.

Rick

[Jim Rankin]

Ok Mike, what's the ship? You don't get off with just asking generator questions on here That thing has to have some propulsion engines too. What is it's history?

[KidDynamo]

Originally Posted by wild800

John,

Thanks for the input. I have also heard that they like straight weight 30. I'll be using that once I do get start. I'll drain and then put fresh in as the the existing oil doesn't look/smell bad at all. I'll have to make sure the oil pressure gauge is hooked up. Here is a Pic of the instrument cluster.

Negative on the 30wt oil!! Usual spec's call for Chevron Delo 100/ 40wt or equivalent. I ran many of these gensets for years and times do change but I doubt the spec for this engine's oil did. Never was 30 weight the oil:

Delo 100 40 wt !!

[wild800]

Kid,

Thanks for the that info on the oil. I knew about the DELO 100. Specs in the manual I have suggest 30wt. I will be changing oil soon.

Regards,

Mike

[wild800]

Originally Posted by Jim Rankin

Ok Mike, what's the ship? You don't get off with just asking generator questions on here That thing has to have some propulsion engines too. What is it's history?

Jim,

Ok here is the website of the LCS (L) 1

http://www.mightymidgets.org/

That will give you history of the type of ship and also on the "102" which I am involved on. Its been in the Bay area (Mare Island) about 2 months now.

The Main Engines are not the orginal. There are two MTU V8 installed now.
I am guessing thet they may be the 2000 series. I haven't started anything on them yet as they are in very good condition and I expect with batteries and battery cables. and Genset power for controls (somewhere those disappeared as did some brass) they will start.

So my task is to get the genset going as there isn't any shore power available. Which is another whole story.

Regards,

Mike

[John Hanson]

Originally Posted by KidDynamo

Negative on the 30wt oil!! Usual spec's call for Chevron Delo 100/ 40wt or equivalent. I ran many of these gensets for years and times do change but I doubt the spec for this engine's oil did. Never was 30 weight the oil:

Delo 100 40 wt !!

Not sure where you're coming up with those figures from, but my GM (DD) service manual for the 71 series engines calls out for SAE30 at freezing and above and SAE20 for below freezing.
John