D311 genset

Looks like we are going to dismantle our 30 KW D311 genset (SN: 51B5484) after at least 60 years of good service aboard 80' motor yacht. Time to change out for quieter service and smaller size for other additions inside engine room. Has been main source of power since we purchased boat in 1982.

It will be completely dismantled to get through engine room door and onto dock for storage. Governor and pump fuel pump rebuilt in 2018 and water jacket pump rebuilt in 2109..Back end already disassembled and ashore.

Anyone interested welcome to inquire about parts or the whole thing. Located in San Pedro CA - Los Angeles harbor

cheers - Jack Boyt

Does this unit Have Pony or Full Electric Start ,Would be interested in Full Electric Start Kit Thanks LJ

This would be a D311H.

I don’t know why but this fascinates me. An engine that big in a boat - just for electrical power. Can you post a pic of the boat ? ( sorry , probably “ship”)

Sorry for the delay in responding as have been busy - both with charters and dismantling the D311 - actually kind of fun.- attaching pics of before and process [attachment=60949]IMG_7083.JPG[/attachment]In order of the questions:

1. has an electric starter - about to take it off tomorrow - will take more pictures - so far been quite [attachment=60952]IMG_8718[1].JPG[/attachment]a work out - started with removing back end.

Now down to removing all ancillary equipment - oil cooler and water jacket pump, governor and fuel pump assembly, and so forth .See pic in current condition. [attachment=60950]TSJV6403[1].JPG[/attachment] [attachment=60951]IMG_8721[1].JPG[/attachment]

2.Next to size of generator on boat - previous owners (1979) had added air conditioning, 8 burner electric stove and ovens, etc. Have since removed all - have natural gas stove and all

See www.motoryachtmauretania.com for pics

Cheers

She's a beauty!!!! What does she have for main engine/s

Currently has two Detroit Diesel 8V71's, probably installed around 1968. Originally launched with 6-71's - will look for orig pic [attachment=60960]Engine room 1947.pdf[/attachment]

Hi Jack. I sent You a PM a few Days ago, Just want to be sure You received it . LJ

PM?

is the whole thing for sale, can it be reassembled and use again, what voltage out put is it

Yes to all of the above - is single phase - think we had it running at 220VAC, with 120VAC legs

We carefully dissembled it - down to the block - had to fit it thru 22" door to crew quarters to get out the front hatch. Original plan was to repair armature/rotor (local shop said they could check it all out, varnish and bake windings as necessary). Turned out that the disassembly and, especially the removal, process was so arduous, could not image reversing it, so went with new genset - much smaller, lighter, extremely quiet. We did not need 30KW as we took off air conditioning, replaced two electric stoves with natural gas, etc some time ago.

All is now stored on pallets under tarps in my back yard. As I found out before, oil pan and bottom plate were mounted with 49 bolts of 7 different sizes, etc - so separated batches out as best I could. My tentative plan was to begin putting it back together - mostly because I have grown so accustomed to it over 38 years as the main power plant aboard the boat. Kind of like an an old friend. Would like to find a home for it.

Engine seems to be in great shape, however armature looks to need some attention (rear main seal apparently leaking for some time, so all coated with engine oil) but resistances seem to check out - no shorts in windings (but I am a very amateur electrician). Turns out 4 of the 12 leads were not connected - not sure why. Rotor needs work as one slip ring has 1/8" gouge(think some one probably had brush wear out and holder dug into slip ring earlier it its career) - but windings seem fine (but also oil covered).

Pics attached show block coming out of forward hatch and last parts in back of pick up before heading home after long last day of disassembly.