Me V Generator

Nauti Fox

Nauti Fox

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Joined
28 Oct 2003
Messages
10,796
Location
Kent
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As the weather has decided not to play fair this weekend I've decided to lock horns with the built in Genny, a 1972 twin cylinder diesel heavyweight.
The sods shoehorned it into the lazarette so I'll have to try and disassemble it in place.
I'm assembling the toolidge at work and taking as much heavyweight hitting things, high powered rattle guns and as many plasters as I can.
I've already succeeded in removing the err..silencer, which was a combination of what looked like scaffold poles leading to a sort of steel thing that was about 2 feet high, the same in diameter and rupturingly heavy to move.
I'll post pikshurs if I survive this foolish quest, or if it all goes quiet this end you'll know that I'll be be lying underneath the bloody thing, a defeated foolish old man that thought he could take on the beast.
Any bets on the outcome? :) (I don't fancy my chances).
 
Good luck!!! ... know of someone who ended up using angle grinder .... don't ask me on what, but bruised he was after the ordeal...

I'm having a simple job as the tune-up I did last week end revealed a faulty injector!! Now all I have to do is remove the rocker arm cover,
02RockerCover1sized-1.jpg

.... identify the faulty injector by shorting it out whilst engine is running, undo my work from last week-end and replace the offending injector...
05Injector_exposedsized-1.jpg

... and in true fashion here is one I did earlier...
06Injector1sized-1.jpg
 
Angle grinder I have...and a fire blanket to hide in.....
Ahh, old boats, they are great fun though!
Looking at yours, when I had to remove the fuel pump on mine, I had to cut a section out of the floor and pray to the god of dropped bolts that I didn't!!!
 
Space I have...
Detroit_1-1.jpg


But to remove, install & adjust, I have to crawl around and to the outside of engine... about 60Cm in front of engines and plenty of space once on the outside... actually relatively easy to work on... just a right pain when you forget that one spanner ...
 
unit18 said:
I'll post pikshurs if I survive this foolish quest, or if it all goes quiet this end you'll know that I'll be be lying underneath the bloody thing, a defeated foolish old man that thought he could take on the beast.
Any bets on the outcome? :) (I don't fancy my chances).
Click to expand...

I'm not coming to help this time!! I 'm still recovering from fitting the new water pump last weekend
 
Sometimes I hate the size of my boat, when I have to pay moorings, but when I see pictures like that, with those engine spaces, I'm glad I have a big boat I can crouch in my engine room and get all round my engines and genny, even if I am a fat git! with plenty of room to spare! Since I moved the domestic battery bank out of there!
 
mitchc said:
I'm not coming to help this time!! I 'm still recovering from fitting the new water pump last weekend
Click to expand...

It was my turn this time.....there I was getting technical advice about American Screw Threads on the Classic forum....then suddenly found myself humping bits of generator about.......I'm going to put my feet up now.
 
Indeed, the battle is won and the beast is defeated.
Many thanks to Alan for lifting the remains out while I feebly wheezed and crumpled!
The main parts, the whirly bits were incredibly heavy.

Thebeast2005.jpg


The bores in remarkably good condition, bearing in mind this thing is 40 years old.

Thebeast2004.jpg


And sundry other bits and pieces.

Thebeast2001.jpg


Thebeast2002.jpg
 
unit18 said:
Angle grinder I have...and a fire blanket to hide in.....
Ahh, old boats, they are great fun though!
Looking at yours, when I had to remove the fuel pump on mine, I had to cut a section out of the floor and pray to the god of dropped bolts that I didn't!!!
Click to expand...

I'm now starting to understand why I've had so many problems with boats over the years, There is obviously a whole group of gods to be pacified before one starts a job. I knew there was a god for tools that went overboard as he only accepts my favorite and newest tools.

Is there a foolproof way of appeasing them?
 
Isolated the faulty injector (isolating the misfiring cylinder) by removing rocker cover and starting the engine.

Then one-by-one shorting the injectors out (big screwdriver and depressing the injector follower ... on top of spring element in picture below, prevetnting new fuel to enter the injector). RPM will drop rapidly if injector is good, and the bad one will give little or no reaction. (faulty one was second one tested)

06Injector1sized-1.jpg


Sorry I have no pictures or video and it probably would violate all HSSE rules to put hands near those rocker arms etc. whilst engine was running... and I needed both my hands to do the job.

After finding the suspect injector, I rotated a good with the suspect one to ensure that the mis-fire followed the injector (ruling out piston comression ring failure). Re-started the engine and repeated the process with success :) ... the mis-fire followed the injector.. :D

So Injector is now out with a hole in the engine ...

Injremoved.jpg


... and I am picking up a new injector (ordered as a spare) tomorrow .... setting me back £34.46 .. then on for installing new injector and re-tune being on the cards.
 
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"Beasts" are inclined (Low profile) Detroit 6/71's ...two stroke diesels ... 6.9L and 1500 Kg each of American Iron... rated at approx 400 hp each at 2300 RPM running through Allison 2:1 gearboxes....

Parts from my local Detroit Service outlet, and parts are quite reasonable :D... The Injectors are just one of the many parts where they do "core exchange" ... Ie if you give them your old one, you get a re-conditioned one in return, but only pay for parts & labour to re-condition a typical injector....the injectors ( and most parts) are shared between the 71 and 92 series from the one cylinder to the V24's makes them appear reasonable from a marine standard. Injectors at less than £40, filters at less than £10 etc... makes for me a happy customer :D
 
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