Hi everyone my dad had a 88 l8000 6 wheel dump the truck was used to tow a 20 ton tag with a john deere 590d 30k excavator it did it for 10 years but the rearend was the weak point it has some rearend lock lugger or somthing not sher well anyway when It poped the 4 th time he had it fixed but then bought a tractor and had hd a pintle mounted to the back back truck is perfect so the l8000 has beeen sitting since 2001 I wanted to get on my own and need a dump so I changed the oil put new fuel tanks on it all fuel filters put new batterys in it primed the fuel system up to the injection pump but thats where im stumped I cant get anything past it to the injectors it runs off either and silicone. Disconected the electric fuel shutoff actuator and felt the arm on the injection pump for the shutoff and it moves but feels loose doesnt feel its doing anything inside a buddy has a identical truck and I disconnected the shuttoff and his feels a slight tension just when its about closed. So my question is what do I do anyone have this problem before ????? Please help
Sounds like the rack inside the pump is stuck in the shut-off position. NOT uncommon.. Its possible to unstick the plungers but its best to do it on a work bench.. especially if you don't have the special socket to get the top nuts off [delivery valve holders] You could, in theory, leave it on the truck, remove the inlet and outlet line and the overflow valve, fill the gallery up with a GOOD penetrating oil.. Give the oil time to do its job.. 10-20 minutes Hold the throttle in the wide open position and work the shut-off lever back and forth. Bump the engine over a few revolutions and repeat the procedure.. until loose.. If that doesn't work, you might as well pull the pump.. TIME IT 1ST !!!!!!!
Hi I was able to get a pretty big plug off the top nex to the shuttoff amd a big tin plug off the side ibstuck mynfingers in both spots and i dont know what im looking for
Can anyone help in what big caps/nutts I removed and is my motor a ford 7.8l? Im not so positive 1987 ford l8000
The big plug on top should be an allen/hex 8 or 10mm screw?? That will give you slight/limited access to the control rack.. do you see anything move in the hole when you move the throttle?? Hold the throttle wide open and move the shut-off lever.. the linkage inside the hole should pull back.. if not, its stuck.. do as I recommended before.. The tin plug on the side 22mm is access to the flyweights.. put it back in, theres nothing for you there.. some #'s off the name plate on the pump will be helpful... Bosch.. PES6P110A720RS****
i have the same truck when i got it the previous owner had run it out of fuel and had the same symptoms your describing. i removed the return line and primed the heck outa it and finaly got it going. just my experience take it or leave it