Petter AV1 resto

[Pulsarbebb]

I never want to see another flywheel, will be testing the oil pump tomorrow, but i did manage to strip half the pump and the other half sounded promising

 

[Pulsarbebb]

Putting final coats of paint on the petter, but now it needs to be pinned to a frame to stop it tipping over, so Ive found one in the scrap trailer and need to grind it and paint it up ready to fit the engine, also Ive got the original gascoigne milking pump which may also fit on the same frame.

watch this space

 

[Pulsarbebb]

well Ive been busy welding together the frame and welding wheels underneath, also used the grinder AGAIN! and wirebrushed the frame before using cold zinc primer which looks alot harder stuff than red oxide, and also put 1 coat of petter green on the frame

still wont be able to start it till its bolted to the frame as one sides still heavier than the other

 

[Pulsarbebb]

I need some serious help otherwise the petter is going in the scrap, its the worst project ive ever had typical british made rubbish , basically ive connected all the fuel pieps on, filter is on and pump is on, ive bled the fuel system of air all the way up to the injector but when you tighten up the injector nut there is a loss in fuel pressure when you turn the flywheel and on the fire stroke air bubbles push out of the pump back towards the filter, but i have tightened everything possible but still no fuel pressure

any help would be appreicated

 

[stormin]

Sounds as though compression pressure may be beating fuel pressure! Have you tested fuel pressure to the injector, rebuilt or re-sealed the pump?

 

[tigler]

How did you bleed the fuel system ?

 

[Pulsarbebb]

its a reconditioned pump, basically ive bled it like this:

Diesel from tank flows to filter

then flows into the side of the pump where theres a bleed screw

so undone that until diesel flows out fast

then i tighten the screw

then undo the injector pipe on top of the pump and prime it uiseg the primer lever until diesel flows out

then tighten that nut and then undo top of the injector and prime again then tighten the top pipe to the injector

i then lift the decompressor lever and turn the flywheel as fast as i can can and drop the decompressor lever but theres no ignition and air blows out the pump back into the fuel line

thats it so far

 

[tigler]

OK, the connector on top of the pump, remove the injector line then remove the adaptor that screws into the pump, under this you will see the delivery valve. With the fuel turned on gently lift the delivery valve up and fuel should flow readily from under the delivery valve, if not give the primer lever a gentle pull whilst still lifting the delivery valve. Reassemble once you have fuel flowing from under the delivery valve. Then prime upto the injector again by rotating the engine. When you have pressurised fuel reaching the injector you will hear a distinct creak as the injector opens under pressure. If this doesn't happen there is no pressure at the injector and the engine will just not run.

Bleeding the pump can be a tricky process and it's had me banging my head against a brick wall sometimes.

 

[Pulsarbebb]

ive had the pump off yesterday and put it in the vice and pusg the cup underneath and it was pumping diesel when i pored some in, but on the injector diesel was only coming out as liquid not as a mist and when i adjusted the injector the diesel wouldn't pump out at all.

if the pump is pumping diesel then does that mean the injector is faulty even though its a recon one

 

[tigler]

If the cracking pressure on the injector is higher than the pump can supply the injector will not spray, but if there is ANY air in the system it won't work either. Diesel pumps and injectors can't really be tested without equipment.

 

[Pulsarbebb]

Finally abit of good luck, I took the diesel pump to a specialist for testing last week and it turns out that the recon pump was faulty so I managed to replace it from the same bloke and today it finally fired up after 30 years, heres a little video which I took this morning

http://s519.photobucket.com/albums/...V1/?action=view&current=2010_1031pics0004.mp4

Just have a few oil leaks and diesel leaks which im sorting out this afternoon and then a nice coat of paint and then start thinking about another project hopefully nothing british

 

[Endacy]

Nice!