Fuel lift pump - diy change?

Muckit

My lift pump was 'damp' the last while, starting fine. Now it's wet and not starting on first go, so getting slightly airlocked.

Rang up this morning and can get new one relatively cheap off the shelf in main dealer. My mechanic is on hols so not around to fit. Is there much to it? Anyone replace themselves?

Should l wait or have a go myself?!

patsy_mccabe

I had to open a pipe on mine last year to get at my power steering pump. Hate opening those pipes, even to bleed diesel, as they often seem to leak at the joints after. Just be extra careful when tighening back the fittings that you thread them back right and hold the pipe straight too, as you tighten.
Go for it!!

TalkingBull

done one here earlier in the year, handy enough job. only trouble was it ws drawing in air on the connection going to the fuel filter after, so had to get new copper washers to seal up connection.

archer22

I replaced the lift pump on my old Massey 50 digger a few years ago...was a simple job and only took about 20 minutes.

Bass Reeves

If it is similar to the lift pump on a massey it is easy enough. Just make sure to that there is rubber washer on the inlets do not reuse old ones. However You could also consider buying an electric/electronic lift pump. Facet are the best make something like this. Never have to pump again after a service or if it runs out of diesel

https://www.fuelpumpsonline.co.uk/facet-posi-flow-electric-fuel-pump-15---40-psi-60104-with-filter--hose-union-2019-p.asp

Muckit

Ok lads thanks for the advice. Picking up OEM pump this evening and will give it a go. I think it's the diaphragm that is perishedon old one.

I replaced both fuel filters over a month ago, topped them with fresh diesel, screwed them on and she fired straight up with no hand priming which l was surprised about. So she not bad that way.

Is diesel going to come keep coming out inlet hose when l open it? Tank is under step so below pump, so shouldn't right?

Bass Reeves

Muckit wrote: »

Ok lads thanks for the advice. Picking up OEM pump this evening and will give it a go. I think it's the diaphragm that is perishedon old one.

I replaced both fuel filters over a month ago, topped them with fresh diesel, screwed them on and she fired straight up with no hand priming which l was surprised about. So she not bad that way.

Is diesel going to come keep coming out inlet hose when l open it? Tank is under step so below pump, so shouldn't right?

No diesel will not flow out

Never wrestle with pigs

Where is the primer on your pump? Mine is on the lift pump. After you fit it prime it up if it doesn't start worst case scenario is just crack a nut on the injector and turn over until you see diesel. Tighten the nut and she should start.

patsy_mccabe

If the Fuel Lift Pump is above the diesel tank, how does it stay primed? Is there another pump at the tank?

SuperTortoise

Took off one several times last year tracing a loss of power, simple job, as others have already said be carefull not to cross thread nuts, you will have a little bit of diesel come out when you take it off just whatever is left in the line.

_Brian

Muckit wrote: »

Ok lads thanks for the advice. Picking up OEM pump this evening and will give it a go. I think it's the diaphragm that is perishedon old one.

I replaced both fuel filters over a month ago, topped them with fresh diesel, screwed them on and she fired straight up with no hand priming which l was surprised about. So she not bad that way.

Is diesel going to come keep coming out inlet hose when l open it? Tank is under step so below pump, so shouldn't right?

Definitely a diy job.
I learned that for changing filters etc if like the David Brown your tractor is difficult to bleed afterwards.
Give her a spin before working on it. It warms up the engine making starting easier afterwards and ensures the battery is well charged.

queueeye

patsy_mccabe wrote: »

If the Fuel Lift Pump is above the diesel tank, how does it stay primed? Is there another pump at the tank?

Vacuum, hence any air entering the system will allow fuel to travel back to the tank.

Muckit

Success!! Fair play lads for all yer tips.

Very straightforward like ye said, and most definitely a diy job any lad could put their hand to. Most small fiats and new hollands will have the same setup so l said I'd stick up a few photos to help the next lad.

15 spanner on the banjo bolts and 13 socket and spanner for mounting bolts. But l have to say, my head torch still my most prized item. Great comfort doing any job at any hour.


I would have surely forgotten to get new brass washers for the banjo bolts had it not been mentioned here. Warming up the tractor also good idea. But would you believe she started first tip of the key! Was full sure would be bleeding to be done.

Gave her a good spin and not a falter! And she as dry as a cork now. Im calling this a win!

patsy_mccabe

Well done. Those washers are called Dowty Seals, by the way.

_Brian

Our David brown is a nightmare to bleed, like yours Muckit ours is dripping diesel, but have been dodging the job because of the bleeding.

patsy_mccabe

We've a David Brown here and it was a nightmare to bleed till I actually followed the shop manual, step by step. There are 2 screws on the filters, 2 on the injector pump. You just bleed these, working from tank to injector pump, while working the lift pump. Trick is not to turn the engine till the very last.
Helps too if the engine is hot, as said above, as less likely to run down battery.

Bass Reeves

patsy_mccabe wrote: »

We've a David Brown here and it was a nightmare to bleed till I actually followed the shop manual, step by step. There are 2 screws on the filters, 2 on the injector pump. You just bleed these, working from tank to injector pump, while working the lift pump. Trick is not to turn the engine till the very last.
Helps too if the engine is hot, as said above, as less likely to run down battery.

An electronic/electric diesel lift pump will solve that. When you turn on the ignition within 10 seconds there is diesel eveerywhere

patsy_mccabe

Bass Reeves wrote: »

An electronic/electric diesel lift pump will solve that. When you turn on the ignition within 10 seconds there is diesel eveerywhere

Ya, it should, but you have to mess around with wiring and new hosing, fittings to install it.

Bass Reeves

patsy_mccabe wrote: »

Ya, it should, but you have to mess around with wiring and new hosing, fittings to install it.

If you can find a suitable point to fit near existing lift pump it is only two pieces of flexi fuel hose and 4 jubliee clips. Just make sure to get right sized ends on the union connections for the fuel pump. An inline filter is necessary as well. The wiring is simple enough there is a continous life feed fuse point just find one same as fitting a radion from one. However you can also put the pump off a separate switch that you turn on and off as you turn on and off engine just remember to put a fuse on it