Classics Earning their keep.

blackbob · May 27, 2016

While you're here @7610 super q (and other Ford-lovers) do you ever get any trouble with your in-line injection pumps? I had to dismantle mine again yesterday, same problem as I had at Christmas time with one of the plungers sticking, although a different one..

Thanks to @John 1594 I now know what to do, and I guess it's caused by me leaving the tractor outside unused for years, I changed the oil in the pump in December and it was milky again yesterday... how does water get in?

John 1594 · May 27, 2016

I thought ford pumps were pressure fed off the main oil pump, and lubricated with black engine oil?. Ones ive seen cetainly are

Ever considered throwing a bit of ATF fluid in with the bulk fuel tank, this modern low sulphur fuel doesnt have the lubricational properties of the older gas oil, it might be the fuel making it stick this time, not the oil

blackbob · May 27, 2016

That's why I'm asking, cos I did wonder if it is something to do with modern fuel?

I thought the engine was running a bit crackly on Wednesday evening but yesterday I went to start it and the rack was stuck... The big filler plug on top had cream on it, just like the oill-filler plug on an engine with a blown head gasket?

John 1594 · May 27, 2016

condensation? Our DB runs on seperate oil, change it every 150 hours, by then its usually just thinned the oil with excess fuel, no water in there.

Id try mixing a bit of oil with the fuel, seems strange why the rack keeps sticking though

blackbob · May 27, 2016

I got hold of an operator's manual a couple of weeks ago, didn't get one with the tractor. The pump seems to hold a half-litre or so of oil, and should be changed every 300 hours, which I didn't realise:

Thomas5060 · May 27, 2016

Every so often I'd put a drop of engine oil into the diesel tank and seems to do the world of good. Have done it ever since one day my old 46 wouldnt rev properly and felt like throttle was sticking, put oil in pump and about a gallon in the diesel tank and it cured it

7610 super q · May 27, 2016

Never had any trouble, and never had one apart.

Never changed the oil in one either....

db9go · May 27, 2016

John 1594 said:
I thought ford pumps were pressure fed off the main oil pump, and lubricated with black engine oil?. Ones ive seen cetainly are

Ever considered throwing a bit of ATF fluid in with the bulk fuel tank, this modern low sulphur fuel doesnt have the lubricational properties of the older gas oil, it might be the fuel making it stick this time, not the oil

They only started pressure feed i think when Super Q came out about 1985 on ten series

cfr1964 · May 27, 2016

db9go said:
They only started pressure feed i think when Super Q came out about 1985 on ten series

We had a super Q 6610 which still had separate oil for the pump
For some reason I thought it was 6 cylinders that were pressure fed
@7610 super q does your 7810 have a pump fed from the engine?

John 1594 · May 27, 2016

It beggars belief that any designer would think that lubricating a precision engineered component such as a fuel pump with oil contaminated by combustion deposits would be a good idea..............

cfr1964 · May 27, 2016

John 1594 said:
It beggars belief that any designer would think that lubricating a precision engineered component such as a fuel pump with oil contaminated by combustion deposits would be a good idea..............

Aye you've got a point
They weren't really any bother though
The Minimec is a tough old thing

farmer pickles · May 27, 2016

mf298 said:
started cutting today for neighbour, good cropView attachment 53386 View attachment 53387 View attachment 53388 View attachment 53389 ! New moco - to me!

I've one here aswell.

Vincent · May 27, 2016

John 1594 said:
It beggars belief that any designer would think that lubricating a precision engineered component such as a fuel pump with oil contaminated by combustion deposits would be a good idea..............

It's not unique to Ford, Cat use that system to and make some of the best engines out there the 3406 for example. They can clock some serious hours. At least with that system it gets fresh oil when serviced- some of them minimec pumps are never checked never mind changed.

Mursal · May 27, 2016

John 1594 said:
It beggars belief that any designer would think that lubricating a precision engineered component such as a fuel pump with oil contaminated by combustion deposits would be a good idea..............

And if you get a bad element it dilutes the engine oil ..................

I'd lubricate the pump elements with a paintbrush before putting back, especially the high up components that wont see oil for a while under normal use. A very small amount of gear oil wont run off two quick.

7610 super q · May 27, 2016

cfr1964 said:
We had a super Q 6610 which still had separate oil for the pump
For some reason I thought it was 6 cylinders that were pressure fed
@7610 super q does your 7810 have a pump fed from the engine?

Fed from the engine I presume, no mention in the instruction book about checking and changing oil.

Had to change the lift pump a few years ago....

cfr1964 · May 27, 2016

7610 super q said:
Fed from the engine I presume, no mention in the instruction book about checking and changing oil.
Had to change the lift pump a few years ago....

View attachment 336170

How many hours has your 78 done if you don't mind me asking?

7610 super q · May 27, 2016

cfr1964 said:
How many hours has your 78 done if you don't mind me asking?

Clock says 10,500 hours, but has been somewhat erratic the last few years, so I would guess 11-11500 hours.

multi power · May 27, 2016

@blackbob I had a bit of trouble with the 398 a few years ago with water in fuel. Was running rough and stopper was sticking
I put about a mug of oil in the fuel tank and it came good again

cfr1964 · May 27, 2016

7610 super q said:
Clock says 10,500 hours, but has been somewhat erratic the last few years, so I would guess 11-11500 hours.

Just run in then

Mursal · May 27, 2016

The little steel pipe to the left of the lift pump will be going back to the engine sump on your tractor @7610 super q ?
@blackbob just has a level plug (see page out of book above)

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