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Generators & Electric Motors General Discussion Antique Generators and Old Electric Motors: Questions and answers about restoring and showing old power generation systems.

Generators & Electric Motors General Discussion

GM Detroit 6-71 Delco Generator


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  #31  
Old 03-04-2017, 01:49:32 PM
brent1 brent1 is offline
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Default Re: GM Detroit 6-71 Delco Generator

Well had some time to get it going (kind of) the engine runs and it sounds awesome. Actually not as loud as I thought it would be. Here is my problem though this unit has a deep sea electronic 7310 control on it. It would start the engine and shut down then start it again. Basically the control head did not recognize that the engine was running and would try and engage to starter while the engine was running. I looked at the control panel and there is a place to hook up a magnetic pickup but nothing is hooked to it. My question is does anyone know what the control panel uses to sense the engine is running? Thanks again for all the help.
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  #32  
Old 03-04-2017, 04:02:41 PM
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Motorhead Motorhead is offline
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Default Re: GM Detroit 6-71 Delco Generator

Is the generator head putting out its rated voltage? I would "assume" that the controller senses off of generator voltage. Check your output. I would make a temporary connection that can be disconnected easily, such as an alligator clip lead, and put it between the starter SOLENOID energizing lead and the solenoid energizing wire. (The small wire) Start the engine and immediately disconnect the alligator clip so the starter can't re-engage with the engine running. Do your checking of outputs or what ever the controller uses for engine run sensing.
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  #33  
Old 03-12-2017, 09:37:18 AM
brent1 brent1 is offline
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Default Re: GM Detroit 6-71 Delco Generator

Tried again. I am now getting generator under voltage during the crank cycle. It cranks for about 3-4 seconds and gives a gen under voltage fault. I believe my exciter has lost its magnetism and the fields need to be flashed. Does anyone out there know the best way to flash the field?
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  #34  
Old 03-12-2017, 11:54:49 AM
Wayne 440 Wayne 440 is offline
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Default Re: GM Detroit 6-71 Delco Generator

I do not think that undervoltage sensing should come into play until after the set reaches rated speed.

What, if anything have you changed since were getting "...the control head did not recognize that the engine was running and would try and engage to starter..."?

I ask because apparently the control system now reacts as if the set is running during its cranking attempt.
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  #35  
Old 03-12-2017, 01:23:59 PM
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Default Re: GM Detroit 6-71 Delco Generator

For whatever reason I cannot get the controller to see the oil pressure I put in a new sender put in a new resistance curve to match the sender and it still will not see oil pressure. I have checked the oil pressure with the manual gauge and there is pressure. i have checked my wire back to the controller it's good and I checked the resistance on the sender with pressure to make sure it is working. 😣😣😣
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  #36  
Old 03-12-2017, 01:44:43 PM
Wayne 440 Wayne 440 is offline
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Default Re: GM Detroit 6-71 Delco Generator

I suspect that the 7310 is defective, improperly configured or otherwise not playing nicely.

Are you sure that it is a genuine DSE7310 and not a Chinese "replacement" as seen on Ebay etc?
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  #37  
Old 04-01-2017, 07:02:43 PM
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Default Re: GM Detroit 6-71 Delco Generator

Does any one out there have the wiring diagram for what wires to connect to get 120/240 out of this unit. It is a 12 wire head.
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  #38  
Old 04-02-2017, 05:37:27 AM
armandh armandh is offline
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Default Re: GM Detroit 6-71 Delco Generator

from the name plate data it is 240/480 [delta]
you will not get 120/240 except by under exciting the generator
and loosing half the power output
zig zag for single phase and loose another third

this is not a good match running the engine lightly loaded

you will need a set of transformers to get 2/3 the output in single phase 120/240 Volts [532/266 Amps]
if my math is close:
what [how many houses] are you trying to power ????

one could divide the load into thirds and avoid the zig-zag loss by transforming each leg of the delta to a separate load.

Last edited by armandh; 04-02-2017 at 05:52:55 AM.
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  #39  
Old 04-02-2017, 07:12:31 AM
brent1 brent1 is offline
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Default Re: GM Detroit 6-71 Delco Generator

I actually was incorrect it is not a 12 wire but a 10 wire. Only trying to power my house and buildings. It was free, ran great and I had somewhere to put it. I don't live in town and have some land so I wasn't worried about the noise. So for me even though it is way more than I need it is still ALOT cheaper than me buying a new single phase diesel. I like diesel over the other fules for me. I also have a 500gal tank for it already. My problem is I have a transfer switch a Kohler rdt-cfnc-200se that will only switch on 240v. Everything in my house and buildings will run on 208 except for one air compressor which is no big deal. So I figured if I had someone re-tap it to 240 should not be that hard but at the time I thought it was a 12 wire but I believe it is a 10 wire so now I don't know if I can even get that voltage out of it. The wires are 0-9 out of the the head and then 13-16 wrap around and transformer and reconnect.
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  #40  
Old 04-02-2017, 08:18:15 AM
brent1 brent1 is offline
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Default Re: GM Detroit 6-71 Delco Generator

Found this on the other aid it just says high and low but not what the voltage would be.
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