Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 52,424
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
bleeding a diesel in general:
1, have clean fuel in tank, open tank tap, get fuel to next stage. lift pump or filter, etc.. whatever it is.
2, from there keep bleeding to the next stage.
finally after a pump and a filter or 2, you should be AT the input of the injector pump. Bleed till you get fuel there.
3, now you loosen the lines to the injectors using a tool, keep hands away to prevent accidental fuel injection under the skin and a trip to the hospital/morgue.
4, continue to bleed till you get fuel bubbling at an injector line, then close that line and move to the next. More often than not, once you get 1/3 to 1/2 of the cyl's bled on a diesel she will go ahead and crank up.. if so continue to tighten each line as it bubbles fuel, untill all cyls done.
next, many pumps have a return line to the tank, and most of the time the injectors have leak off lines.
make sure the lines for the leak off and pump return are not blocked.. some units will not run with blocked leak/return lines.
This was an in general post. Some machines have onle a single filter, some have multiple.
some have electric pumps, some have manual hand pumps, some have NO pumps before the injector pump... those are usually gravity.
for systems that do not have bleeder screws or ports, you are left with loosening lines. do so with tools.. keep skin away from fittings that could spray pressurized oil under the skin. most of these lines are ultra low flow but high pressure.. so once loose, fuel barely drips and dribbles, but when closed make high pressure / low volume, so be carefull right when tightening / loosening fittings as you can have pressure to spray at that moment.
1, have clean fuel in tank, open tank tap, get fuel to next stage. lift pump or filter, etc.. whatever it is.
2, from there keep bleeding to the next stage.
finally after a pump and a filter or 2, you should be AT the input of the injector pump. Bleed till you get fuel there.
3, now you loosen the lines to the injectors using a tool, keep hands away to prevent accidental fuel injection under the skin and a trip to the hospital/morgue.
4, continue to bleed till you get fuel bubbling at an injector line, then close that line and move to the next. More often than not, once you get 1/3 to 1/2 of the cyl's bled on a diesel she will go ahead and crank up.. if so continue to tighten each line as it bubbles fuel, untill all cyls done.
next, many pumps have a return line to the tank, and most of the time the injectors have leak off lines.
make sure the lines for the leak off and pump return are not blocked.. some units will not run with blocked leak/return lines.
This was an in general post. Some machines have onle a single filter, some have multiple.
some have electric pumps, some have manual hand pumps, some have NO pumps before the injector pump... those are usually gravity.
for systems that do not have bleeder screws or ports, you are left with loosening lines. do so with tools.. keep skin away from fittings that could spray pressurized oil under the skin. most of these lines are ultra low flow but high pressure.. so once loose, fuel barely drips and dribbles, but when closed make high pressure / low volume, so be carefull right when tightening / loosening fittings as you can have pressure to spray at that moment.
