Posted by gbs on April 23, 2018 at 18:49:12 from (174.193.0.1):
In Reply to: Re: Won?t crank posted by Olliejunkie on April 23, 2018 at 09:20:13:
being you said your tractor has a Perkins diesel I'm going to assume it's a m.f.,first MAKE sure the valves are set right or you can bend a push rod,valve or damage a piston, assuming you didn't remove the injector pump and it was running before, air is locked in the system causing the no start problem, again if it was running before head repair I going to skip a couple steps with the fuel, first look on top of the first filter housing where the line from the tank is connected there is what looks like a 9/16 nut sitting there holding nothing loosen it up several turns you should see a slot in the bolt for bleeding depending on how the tractor is plumbed fuel should free flow if it doesn't go thru the lift pump first, if so then operate the lift pump hand lever, you may have to turn the engine a little to allow the hand lever to operate the pump, or let it free flow which ever applies until air free fuel comes out, tighten bolt back, being it is a 1973 it should have a secondary filter if so there is small metal line attached to the top of the filter housing with a bango bolt that has a small hole in the side of it for bleeding off air remove it make sure it's not stopped up while removed then operate the lift pump handle until air free fuel comes out reinstall the bolt then operate the pump handle a few more times to pressurize the filters(don't loose the metal washers for the bango housing) or it will leak, next loosen the bleeder screw on the body of the injector pump it has a 5/16 nut, operate the hand pump until AIR FREE FUEL SPRAYS OUT then tighten the bleeder screw ,on the top outside of the injection pump there is another bleeder screw bleed it the same way, once you get the pump bled loosen the pressure lines on each injector place the throttle at half fuel make sure the shut off is in the on position and operational, try starting engine after a few turns you should see fuel coming from one or more of the injector lines, tighten them, being ready to shut the engine in case it starts with the rest of the lines loose try starting again, in a few turns another line will start leaking tighten it, if didn't already try to start it will now when you try it again BE READY to shut the engine off because YOU DON'T WANT TO COME IN CONTACT WITH THE FUEL SPRAYING FROM THE LOOSE INJECTOR LINE IT CAN BE PRESSURIZED TO 2500#PSI AND IT COULD CAUSE A SERIOUS INJURY IF YOU WERE HIT BY IT,try starting again,ONCE IT STARTS (IMMEDATELY SHUT IT OFF) then and only then tighten the remaining injector line.
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