This would fit in this section, I assume?
Some of you may have read my woes with this digger - basically, the diesel injection pump is gassed, the local place wants 3k to rebuild it, and second hand, they are rarer than teenage virgins on a council estate, and the chap in UK hasnt got back to me yet, so a complete engine swap is on the cards as I need it up and running asap to earn some dollar.
Its a Neuson 5001 RD, approximately 1988 vintage...
It has a Yanmar 3 cylinder, turbocharged unit, which give 60bhp...
In the bottom left of this pic, you can just see a red lump - this is the hydraulic pump. Digger engines have no gearbox etc, the pump is driven directly from the engine flywheel, and all movements of the digger, arm, tracks etc are run by hydraulic motors or pistons.
So, with an engine swap looking likely, I picked this up from a chap I know...
an early vauxhall nova TD, (called an Opel Corsa here!) which his son rolled. Its been sat for a while, but seemingly the engine is sound, and before the prang, had new turbo, new belts and a good service.
There was nothing delicate about the removal - lifted the front up with the tractor, used the big grinder to cut through driveshafts, exhaust, tie rods etc, then dumped the engine out the bottom, lifting the empty shell over the top.
I then took off the hydraulic pump from the yanmar unit, to see how it was connected. Surprisingly, its driven by this cross-shaped pinion... (drive disc removed from flywheel in this pic)
which slots into a plastic disc that was bolted to he flywheel, which you can see to the left here....
I assume this is a safety feature - if the pump were to lock up or seize for some reason, this disc would break, preventing damage to the engine. I'm quite happy though, as it should be easy-ish to adapt to the corsa engine, and the nature of the coupling will take up any imperfections in my machining.
off with the corsa clutch assembly...
A good bit of 4mm plate was rummaged out of the scrap pile to make an adaptor plate. Here, I am tracing the mounting holes from the clutch, so it will bolt to the flywheel....
Lacking a lathe, all work was measured very carefully indeed and the cutting and grinding was done very slowly on the bench grinder. Holes were drilled with the neighbours pillar drill.
and voila - the adaptor plate bolts to the corsa flywheel using the clutch mounting holes, and the plastic drive disc bolts to the adaptor...
Turning the engine over, There is no measureable run-out so its well centred. and all the holes are equally spaced around the circumference, so balance shouldnt be a problem either.
tomorrow - engine mounts.
Some of you may have read my woes with this digger - basically, the diesel injection pump is gassed, the local place wants 3k to rebuild it, and second hand, they are rarer than teenage virgins on a council estate, and the chap in UK hasnt got back to me yet, so a complete engine swap is on the cards as I need it up and running asap to earn some dollar.
Its a Neuson 5001 RD, approximately 1988 vintage...
It has a Yanmar 3 cylinder, turbocharged unit, which give 60bhp...
In the bottom left of this pic, you can just see a red lump - this is the hydraulic pump. Digger engines have no gearbox etc, the pump is driven directly from the engine flywheel, and all movements of the digger, arm, tracks etc are run by hydraulic motors or pistons.
So, with an engine swap looking likely, I picked this up from a chap I know...
an early vauxhall nova TD, (called an Opel Corsa here!) which his son rolled. Its been sat for a while, but seemingly the engine is sound, and before the prang, had new turbo, new belts and a good service.
There was nothing delicate about the removal - lifted the front up with the tractor, used the big grinder to cut through driveshafts, exhaust, tie rods etc, then dumped the engine out the bottom, lifting the empty shell over the top.
I then took off the hydraulic pump from the yanmar unit, to see how it was connected. Surprisingly, its driven by this cross-shaped pinion... (drive disc removed from flywheel in this pic)
which slots into a plastic disc that was bolted to he flywheel, which you can see to the left here....
I assume this is a safety feature - if the pump were to lock up or seize for some reason, this disc would break, preventing damage to the engine. I'm quite happy though, as it should be easy-ish to adapt to the corsa engine, and the nature of the coupling will take up any imperfections in my machining.
off with the corsa clutch assembly...
A good bit of 4mm plate was rummaged out of the scrap pile to make an adaptor plate. Here, I am tracing the mounting holes from the clutch, so it will bolt to the flywheel....
Lacking a lathe, all work was measured very carefully indeed and the cutting and grinding was done very slowly on the bench grinder. Holes were drilled with the neighbours pillar drill.
and voila - the adaptor plate bolts to the corsa flywheel using the clutch mounting holes, and the plastic drive disc bolts to the adaptor...
Turning the engine over, There is no measureable run-out so its well centred. and all the holes are equally spaced around the circumference, so balance shouldnt be a problem either.
tomorrow - engine mounts.
I realise how tricky this kind of work really is - It looks so simple in pictures.
- I personally feel it's a skill that all men should try at least once 
They come out of the injection pump and end in that 2-pin plug. Its not the stop solenoid, thats the wire dangling down from the centre of the pic.