#Old john deere 550 dozer specs full

Many are like icebergs - 90% of the mass is buried. Speaking of rock - the limestone rock is mostly loose with zillions of boulders up to maybe three feet in diameter. Nothing would be worse than getting the 450 and discovering it's only marginally better than my Kubota for moving rock. I realize large is good, small is not good when trying to push stuff around, so I'm attempting to do research to determine if the little 450 (~11,000 pounds) would be useful for my intended purpose. There is a late 1970s Case 450 with about 300 hours on a frame-out engine overhaul and supposedly good UC and running gear (and a 6-way.) I'll bet I could pick this little guy up for around 10K (or it would be no-deal for me.) I've spent half a day making a 50' path for the truck :Banghead I've tried to move some of the largest rocks out of the way with my little 30 horse Kubota loader and box blade, but it's an exercise in futility. Let us know if this helps.We have a small place in Texas (30 acres) with lots of limestone (and a little topsoil here 'n there!) I need to drive the fence line in my mini-truck, but some of the area is pretty rocky and tough on my rear-end and the truck. You mentioned installing lift pump and another 'pump' so I assume that was a new injection pump? Another thing to check is the retun line from pump and injectors. Is it clean?) If that all checks ok, I would suspect injection pump. (actually I just checked parts diagram, looks like a screen in bottom of tank.#7 in diagram.

#Old john deere 550 dozer specs full

I don't know the fuel line configuration on the 550 but if the fuel line comes out the bottom of the tank, remove the line and be sure you are getting a strong, full flow from the tank.

Are you absolutely sure you are getting plenty of fuel flow from the tank? Low fuel flow can definitely affect power, but shouldn't affect only one or two cylinders. I doubt this is the problem since you have 400 psi compression, but be sure to at least visually check rocker arms to see if all cylinders are opening approx. You don't mention checking valve lift to see if cam lobes could be wiped. Fuel, air and compression in proper timing should make it run. It seems you have covered a lot of possibilities. Has anyone ever ran into this or can give us a direction? I am 3/4 the way finished with my lake, going bald because of this machine, and spent a whole lot of money! Please help! Thanks in Advance!!!! So basically it's in time including pump, it's getting fuel, valves are closed on TDC and has 400 PSI compression still 1 and 2 cylinders are dead.assuming that it would not build 400 PSI without air we think it's getting air. Pulled injectors fired with line on, good atomization and stream.ĥ. Pulled exhaust manifold and turbo off fired engine, 1 and 2 both getting fuel. Pulled front structure timed motor.everything lines up. Loaded it up and took her to the shop, compression tests 390 to 425 on all cylinders. Contacted Martin Equipment, tech worked on it for 6 hours and made 30 phone calls.scratching his head (at least they didn't charge me).Ĥ. Installed injectors and lift pump, back to 1 and 2 dead.ģ. Installed pump, same thing only hot cylinder number 4. Thinking fuel, no tester, pulled injectors left them hooked to line, low fuel pressure. Pulled head, thinking head gasket, sent head out.checks OK. Changed fuel filter, further testing number 1 and 2 are dead only running on 3 and 4. A month into the project pushing up a hill starts loosing power (this is where it gets interesting). Pulled engine, turn crank, pistons and cylinders look nt head out.one new rod for #4 and new bearings back together and running.Ģ. Two days into it number 4 rod and main spun.

It's getting to be the end of the season and when I decided to build a 2.5 acre lake with my 550 this spring it has been one nightmare after another! I own a diesel shop and my techs and I are scratching are heads! I'll try and be brief ġ.