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1971 Ford 550 Backhoe
- Thread starter MMTTR
- Start date
Death Row Dave
Well-known member
What engine is in it ? We had 4 of them ,370 and 429 gas engines , powering our trucks .
finn
Well-known member
Not sure, but I think Ford used CAV / Lucas pumps on the Basildon built Diesel in those backhoes.
Do a search. There should be thrads or videos out there.
Be prepared to buy a reman pump though. It’s a 52 year old macnine.
Some of those old engines had timing advance mechanisms operated by fuel pressure, so fresh filters might be a place to start.
Do a search. There should be thrads or videos out there.
Be prepared to buy a reman pump though. It’s a 52 year old macnine.
Some of those old engines had timing advance mechanisms operated by fuel pressure, so fresh filters might be a place to start.
finn
Well-known member
The 550 has a three cylinder Ford Diesel, and the online search sites confirm it has a Lucas / CAV fuel system.
Broken Tractor, among other places, has fuel system parts.
Timing doesn’t normally change with Diesel engines, unless something is worn or broken, or, like I said, the filters are plugged or the supply pressure is otherwise low from a damaged lift pump, etc.
Broken Tractor, among other places, has fuel system parts.
Timing doesn’t normally change with Diesel engines, unless something is worn or broken, or, like I said, the filters are plugged or the supply pressure is otherwise low from a damaged lift pump, etc.
Wrench97
Well-known member
Did he have the pump off for some reason?
The pump should be the same as a 555 if I remember correctly the front gear is keyed and the timing marks are stamped on the front engine cover with a line on the pump to line up>
The pump should be the same as a 555 if I remember correctly the front gear is keyed and the timing marks are stamped on the front engine cover with a line on the pump to line up>
RaisedByWolves
Well-known member
Or someone took it apart and mixed up/lost the shims.The 550 has a three cylinder Ford Diesel, and the online search sites confirm it has a Lucas / CAV fuel system.
Broken Tractor, among other places, has fuel system parts.
Timing doesn’t normally change with Diesel engines, unless something is worn or broken, or, like I said, the filters are plugged or the supply pressure is otherwise low from a damaged lift pump, etc.
finn
Well-known member
Yup. Most threads like this are short of much of the information required to give a definitive answer re how to proceed.Or someone took it apart and mixed up/lost the shims.
The details sometimes come out after the second page of dead ends and guesses.
BillK
Well-known member
It might be a 256D. I am doing the cylinder head for one right now and I think my customer has the service manual. Get the engine model and serial number off the plate and I will see what he has.
Death Row Dave
Well-known member
When speaking of 550 , I was speaking of F550 , road trucks with backhoe mounted to rear of bed . Sorry for confusion