Oil & Fuel KAMA fuel line bleeding
- Thread starter Paddy
- Start date
greg_g
Super Member
- Joined
- Dec 18, 2003
- Messages
- 6,086
- Location
- Western Kentucky
- Tractor
- JD3720 Cab, 300X loader with 4-in-1 bucket
Mine blew the same hose, with only eight hours on the tractor. The fuel level in your filter housing is probably down.
1. remove fuel filter housing
2. fill housing with fuel and replace
3. follow the flexible fuel line from the filter to the injection pump (not back to the fuel pump)
4. loosen banjo fitting at input to injection pump
5. use hand primer till bubbles turn into steady fuel flow
6. tighten banjo fitting
7. loosen all hard lines at the upper compression fittings
8. use starter motor to crank the injection pump
9. tighten each compression fitting as bubbles turn into fuel flow.
10. by the time the last fitting is tightened, engine should start (if it hasn't already)
//greg//
1. remove fuel filter housing
2. fill housing with fuel and replace
3. follow the flexible fuel line from the filter to the injection pump (not back to the fuel pump)
4. loosen banjo fitting at input to injection pump
5. use hand primer till bubbles turn into steady fuel flow
6. tighten banjo fitting
7. loosen all hard lines at the upper compression fittings
8. use starter motor to crank the injection pump
9. tighten each compression fitting as bubbles turn into fuel flow.
10. by the time the last fitting is tightened, engine should start (if it hasn't already)
//greg//
O.K., now i am worried. Chip, have you seen many of these hoses blow? i am wondering if i should replace mine with better hose before it blows and not have to deal with all the extra bleeding and just bleed the new hose.
Scozz
Silver Member
Paddy ... the rubber return line on my 454 is very badly deteriorated after 50 hrs. I'm assuming that is what blew on yours? The picture looks like you just replace the hose using the existing banjo fittings with hose clamps .. is that correct? If so thats what I do on mine b4 it goes ... Scozz
bluechip
Veteran Member
Wow, you gotta get up pretty early (or stay up late I guess) to have a chance to help here! that's good.
When bleeding, not necessary to remove fuel filter just open vent on top, pump till fuel comes out, them pump some more to push air through back into tank.
This hose is a problem on KM454 only, the KM554 inj. pump is designed with a hard line here, but it is not interchangable with the KM454. This is a "low pressure" line and can be repaird as Paddy has done, the crimps can be cut off the banjoe fittings and the banjo itself reused. some have gone to auto parts stores and had new crimps put on. The hose the factory uses here is not any good, this hose is exposed to sunlight which does not seem to help this type of rubber.
When bleeding, not necessary to remove fuel filter just open vent on top, pump till fuel comes out, them pump some more to push air through back into tank.
This hose is a problem on KM454 only, the KM554 inj. pump is designed with a hard line here, but it is not interchangable with the KM454. This is a "low pressure" line and can be repaird as Paddy has done, the crimps can be cut off the banjoe fittings and the banjo itself reused. some have gone to auto parts stores and had new crimps put on. The hose the factory uses here is not any good, this hose is exposed to sunlight which does not seem to help this type of rubber.
greg_g
Super Member
- Joined
- Dec 18, 2003
- Messages
- 6,086
- Location
- Western Kentucky
- Tractor
- JD3720 Cab, 300X loader with 4-in-1 bucket
</font><font color="blue" class="small">( When bleeding, not necessary to remove fuel filter just open vent on top, pump till fuel comes out, them pump some more to push air through back into tank.)</font>
Talking firsthand experience here Chip - when my hose blew, the filter housing was pretty much drained by the time I got back with the repaired hose. Takes a helluva lot of pumping with the hand primer to fill that thing, it's faster to remove/refill/replace/bleed
Don't trust my hearing aids either, as I have never been able to hear what you describe as the sound of fuel spilling back into the tank via the return line. The visual of seeing fuel run out the banjo input to the injection pump is much more reassuring.
//greg//
Talking firsthand experience here Chip - when my hose blew, the filter housing was pretty much drained by the time I got back with the repaired hose. Takes a helluva lot of pumping with the hand primer to fill that thing, it's faster to remove/refill/replace/bleed
Don't trust my hearing aids either, as I have never been able to hear what you describe as the sound of fuel spilling back into the tank via the return line. The visual of seeing fuel run out the banjo input to the injection pump is much more reassuring.
//greg//
bluechip
Veteran Member
opening the vent on top of the fuel filter should let gravity fill the filter without removing it, of course it won't hur anythng to take it off and fill it up. You are correct the filter must be full befroe the rest of hte bleeding process can be effective...
JInmas a little different because flow is from tank to lift pump then filter but on the KM it is tank to filter to lift pump.
JInmas a little different because flow is from tank to lift pump then filter but on the KM it is tank to filter to lift pump.
Well, once again you guys made this a 5 min job. As you tighten the injector lines she fired right up. She ran rough for about 5 sec.
With in an hour I was moving 20 tons of gravel I had droped. I'd show a pix but it's dark now and who hasn't seen a parking lot?
I did just take the Saw-all and cut off the cripms. A standard $2.00 1/4" ID fuel line slide right over the barbed fitting on the banjo.
Thanks Greg and Chip,
Patrick
With in an hour I was moving 20 tons of gravel I had droped. I'd show a pix but it's dark now and who hasn't seen a parking lot?
I did just take the Saw-all and cut off the cripms. A standard $2.00 1/4" ID fuel line slide right over the barbed fitting on the banjo.
Thanks Greg and Chip,
Patrick