Bleeding fuel lines on Case 1840 Uniloader

gabsgrammy · Dec 22, 2016

I recently replaced the head and head gasket on my Case 1840 uniloader with the 4BT Cummins engine. Now I need to put diesel lines back on injectors and bleed the system. The manual fuel pump on this model seems to have a metal tang instead of a button to pressurize fuel system. My questions are: do I bleed the two bleed screws on the injection pump; the the two fittings (one with "banjo" fitting ) by the fuel filter, then finally bleed the four injectors, one at a time? Moving the metal tang up and down on what I believe is the manual fuel pump doesn't seem to be building up ant pressure...please, any nd all advice is needed and appreciated.

Dieseltech · Dec 22, 2016

Start at the filter, with the bleed screw or outlet line loose operate the hand primer lever. If no fuel shows crank the engine one turn, the cam lobe may be holding up the lever inside keeping the hand lever from working. Then move to the injection pump, with the lower side bleed screw loose and key ON you should get fuel at the bleeder. When air free move to the top screw, when it's clear crank engine with injector line nuts loose to allow injection pump to deliver air free fuel to the injectors. Tighten line nuts and start engine.

gabsgrammy · Dec 22, 2016

Do you suggest turning engine over with hand engine turnover tool or using the key? It seems like it would be less stress to use the hand tool. It doesn't seem like pressure is building up with the manual lever so turning over the engine is probably necessary. Thanks in advance for any help.

AJ. · Dec 25, 2016

If you have the turning over tool and get to the flywheel housing use it,if not just jab the starter one jab at a time till you feel pressure on the priming lever.
AJ

Bleeding fuel lines on Case 1840 Uniloader

gabsgrammy

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Dieseltech

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gabsgrammy

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AJ.

Well-known Member

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