• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

580SE Lucas Injector Leak

bowen

Senior Member
Joined
Nov 13, 2011
Messages
540
Location
N. GA USA
Occupation
Electrical Panel Builder
Diesel_Leak_480_11-20-11 002.jpg
I bet several folks have this problem.
I finally found the fuel leak by cleaning the injector pump.
It leaking underneath the throttle lever right there on the top right of the photo.
But when I go to the case parts there is no seals etc available. Seems I have to buy a reman unit ($1100) just for a small leak.
I found a manual on the injector although it's not the exact one, and shows no seal/rebuild kits etc part numbers.
It looks like the cover has to come off as the stem seal is underneath the cover.
This means I need the gasket for the cover plus whatever seals.
Has anyone found these parts available?
Mine is a CAV (Lucas) U3042F152. S/N 25250417
Also A50L800-1-2400 on the unit which I believe settings used.
I think the current Case # is J908645 or JR915882
 

Bala

Well-Known Member
Joined
Mar 19, 2011
Messages
191
Location
Qld Australia
I got seals and gasket for mine from my local diesel shop, these pumps are extremely common so they should have gasket and shaft seals.

Hope some one will cone on and confirm this as its been a while since i did mine, the throttle lever shaft had a spring connection onside, so take the lever off the shaft and then as you lift the cover push on the shaft so it stays with the pump, that was the only little tricky bit. That is how I remember doing it.
 

alrman

Senior Member
Joined
Jun 20, 2009
Messages
3,303
Location
QLD Australia
Occupation
Diesel Fitter;Small Business Owner;Cleaner
Case do not supply any parts for these pumps except for the shut off solonoid. Like Bala said, speak to local fuel injection shop & they can supply parts. Pumpguysc is the local guru & has helped other members, come on thabull where are you now?
 

bowen

Senior Member
Joined
Nov 13, 2011
Messages
540
Location
N. GA USA
Occupation
Electrical Panel Builder
Case do not supply any parts for these pumps except for the shut off solonoid. Like Bala said, speak to local fuel injection shop & they can supply parts. Pumpguysc is the local guru & has helped other members, come on thabull where are you now?
I have looked online and finding replacement parts is not easy to find. I found enough to see that they do offer rebuild kits although mine is working great, just leaking.
Seems the places I have found wants to "rebuild them" and reset/recalibrate or whatever they do.
That "A50L-1-2400" stamped on the side related to how they set them up, and I don't understand all this.
I just want diesel fuel to stop leaking down onto the engine.
I actually tightened the little nut today on the throttle linkage and helped this leak I think. However now one of the bleeder screws is also leaking.
I would like to have all new seals for the unit.
 

Goose

Senior Member
Joined
Feb 11, 2007
Messages
362
Location
Kansas
You can reseal the shaft with seals from your local pump shop, but the housing and shaft are worn and will probably leak after awhile. Our pump shop rebuilds the covers and installs a new sleeve in the housing and a new shaft. We stock 2 rebuilt covers so check your pump shop to see if they can rebuild your cover or have a rebuilt cover on the shelf. We get about $175.00 for the rebuilt cover and needed gaskets.
 

bowen

Senior Member
Joined
Nov 13, 2011
Messages
540
Location
N. GA USA
Occupation
Electrical Panel Builder
You can reseal the shaft with seals from your local pump shop, but the housing and shaft are worn and will probably leak after awhile. Our pump shop rebuilds the covers and installs a new sleeve in the housing and a new shaft. We stock 2 rebuilt covers so check your pump shop to see if they can rebuild your cover or have a rebuilt cover on the shelf. We get about $175.00 for the rebuilt cover and needed gaskets.
I don't really have an injector shop close, but I am looking. Do you have one rebuilt that I can buy for $175, and is this fairly easy to remove and replace?
And if so are there any adjustments that will need to made later that are critical?
 

Goose

Senior Member
Joined
Feb 11, 2007
Messages
362
Location
Kansas
I have a couple on the shelf or I can get you in contact with my pump shop and have them ship you one. There is a core charge on the cover also as they want the old cover back. As far as installing it is a little tricky as you have to lift the cover up about 1/2 inch and unhook the spring between the lever and the governer. As far adjustments the only thing to adjust after the cover is replaced is the idle and full throttle settings.
 

willie59

Administrator
Joined
Dec 21, 2008
Messages
13,361
Location
Knoxville TN
Occupation
Service Manager
Same thing happens on Bosch pumps on Deutz engines. Throttle shaft wears housing so new seal is not effective in making a seal, have to fit bushing in worn housing so seal can do it's job.
 

bowen

Senior Member
Joined
Nov 13, 2011
Messages
540
Location
N. GA USA
Occupation
Electrical Panel Builder
Same thing happens on Bosch pumps on Deutz engines. Throttle shaft wears housing so new seal is not effective in making a seal, have to fit bushing in worn housing so seal can do it's job.
Do I understand correctly that I should not buy a $45 seal/gasket set and do this myself?
What does replacing the bushing involve? Drilling? Pressing in?
I suppose the $175 price includes $15 of gaskets/seals for the top and the labor to replace the bushing and insert the o-rings.
That $34 complete rebuild kit I found on e-bay has some form of stem showing in the picture.
 

bowen

Senior Member
Joined
Nov 13, 2011
Messages
540
Location
N. GA USA
Occupation
Electrical Panel Builder
View attachment Pump_Plus.pdf
I'm not sure this is exactly what mine looks like inside, but it has to be similar.
I suppose the spring mentioned is the governor spring that connects to the throttle lever that is leaking.
 

cfw3

Member
Joined
Feb 11, 2008
Messages
20
Location
New England
I have the same exact problem with my machine, it is leaking really badly, but the pump works fine. Goose, I would like to buy the parts to replace it from you since you helped me identify my ghost controls problem in another thread. Please pm me or post how I can get in touch with you to get the parts ordered. Thanks, Chuck
 

alrman

Senior Member
Joined
Jun 20, 2009
Messages
3,303
Location
QLD Australia
Occupation
Diesel Fitter;Small Business Owner;Cleaner
Do I understand correctly that I should not buy a $45 seal/gasket set and do this myself?

We don't really know what you're cabable of bowen. You need to decide if you are going to do this. It may need a bushing fitted to the throttle shaft to make it 100%, but I have resealed many of these without the need. The injection shop I use to get parts won't sleeve them any more, as the brass bush is not as durable as the original alloy, so new covers (cav # 7180-872N) are fitted when they are needed. A new shaft may also be req (cav 7123-770L ) - these are a little different to the original as they are no longer available. The supplier will hopefully advise you.

Some pump shops like to play their cards close to their chest, they won't give any advise as they want the pump in their shop........

If you decide to do this, you need to be VERY CAREFUL lifting the top cover off the pump as the spring can go on in a number of different configerations & if you get it wrong, the pump won't run the same. Also there is a small clevis pin & a tiny spring involved that can go missing.

Here is a pic supplied by another member, THE SPRING & PIN LOCATIONS ARE DIFFERENT TO YOURS. But it shows in inside fairly well.
As you lift the cover - note the correct mounting points for your application & don't drop any of the small parts. Long nose pliers are a must have.

Goes without saying - you want NO DIRT in your injector pump - so clean the work area thoroughly.
 

Attachments

  • cav top cover.jpg
    cav top cover.jpg
    99.7 KB · Views: 5,946

bowen

Senior Member
Joined
Nov 13, 2011
Messages
540
Location
N. GA USA
Occupation
Electrical Panel Builder
We don't really know what you're cabable of bowen. You need to decide if you are going to do this. It may need a bushing fitted to the throttle shaft to make it 100%, but I have resealed many of these without the need. ...
If I can find the correct kit for mine I am going to order a kit and try this myself. I have fixed lots of stuff I never worked on before. I actually almost have my stem leak fixed just by tightening the shaft nut a bit.
But at least one of the the bleeder plugs are leaking after the engine get real warm.
If I decide to take the head off, I have a guy to help me. I likely would NOT try drilling and pressing in a new brass bushing, unless a new cap was really expensive. I already got one response from a shop in MI wanting $350 to $550 to repair my unit and I would need to ship it there. Unit down for at least 10-14 days.
I think you are right about the shops. They DO NOT want to sell the parts, which are relatively cheap. They want to get the units into the shop so they can use $25 worth of parts and charge $400 as "rebuilt". I just have some small leaks.
I will check the stem closer later to see if I can feel any loose axial motion.
Many thanks for your advice.
 

bowen

Senior Member
Joined
Nov 13, 2011
Messages
540
Location
N. GA USA
Occupation
Electrical Panel Builder

alrman

Senior Member
Joined
Jun 20, 2009
Messages
3,303
Location
QLD Australia
Occupation
Diesel Fitter;Small Business Owner;Cleaner

cfw3

Member
Joined
Feb 11, 2008
Messages
20
Location
New England
I am going to try calling these guys in the morning. Maybe they can get the cover and shaft.

I just ordered a new top cover, shaft and seals from Lance at Mylex Intl (they have the seal kits listed on ebay) for $111 plus shipping. The top cover on ebay from the uk is super cheap but I wasn't sure how long it would take to get here!
 

bowen

Senior Member
Joined
Nov 13, 2011
Messages
540
Location
N. GA USA
Occupation
Electrical Panel Builder
I just ordered a new top cover, shaft and seals from Lance at Mylex Intl (they have the seal kits listed on ebay) for $111 plus shipping. The top cover on ebay from the uk is super cheap but I wasn't sure how long it would take to get here!
I have actually found a cheaper place that this, but unsure about all these parts just yet.
Did they give you the part numbers on the top cover and new shaft?
These parts are crazy and some treat all of the numbers like a great secret. I think it's because some sell them with 300% markup.
 
Top