Hi, I'm new to the forum having bought a water pump with an attached Petter AA1 diesel engine.

I knew it was a non runner and I bought it as a project for fun although a decent water pump may well come in handy.

I believe I have identified the reason the engine won't start and it's the diesel pump.

The governor has an arm that pivots and moves a toothed slide over the body of the pump which in turn rotates something inside the pump that adjusts the flow of diesel and thus adjusts the speed of the engine to its set fixed speed.

The arm moves freely but the sliding part doesn't move. It's this part https://injectionpumps.co.uk/product/bryce-faoar-pump-control-rod-11-116/  I know the arm moves freely as you can pop it off the sticking up ball and move back and forth.

I would remove the pump but the sticking up ball bit on the slide has to line up with a cut out in the casting and it's in the wrong position and won't move.

Can anyone make any suggestions as to what I can do?

I have tried filling the pump with penetrating oil but I suspect it doesn't reach the gummed up part - the engine will have stood with filthy diesel for a long time.

Mike

It is a shame that most of the old project pics that people put up years ago are no longer here...

Would it be possible to do a small replacement thread on your thermostat setup ? And just add the pics again?  A quick how to thread with a link from this thread. No explantion needed to write up again. Thanks..

Hi,

I recently picked up a 3.5kVA ST1 based startomatic with a brushed gen/starter head, the unit is based on the newer electronic style SOM system. The set has around 70 hours on and is in good condition though the SOM box is badly corroded along with some of the relays.

Would anyone have the diagram for these Electronic based units, worst case I could work back to figure it out but thought to see if anyone has the info, all the relays are corroded beyond use as pins are broken or missing, so I'll work my way round that ; they look like ones you can get now with a modern equivelant, but I may have to add them externally to the boards and remove the old holders as the pins are gone in some from rust


IMG_20241027_095327 by TwirlyWhirly555, on Flickr


Thanks, Dash

As far as I know, the GM90's have freeze plugs at the TOP of the head...like in the oil galley area.  I've had one come out before.  I was easily able to find a replacement from NAPA.

Replacement is simple, but I DO use 3M Super Weatherstrip Adhesive to "help" it stay in there.  Just find the appropriate socket that'll "back up" that disk, and tap it in place, with some super weatherstrip adhesive on the back side....just to make sure it doesn't leak.

Hi there I need a Manifold. Mine is missing. Does anyone have one for sale.