DPA Injector pump destruction!

[alb40]

Hi

When bleeding the fuel system on my BMC1500 diesel engine this weekend, i managed to break the top bleed screw on the injection pump - D'OH!!

Anyone have any ideas on the best way to go about getting it out without making a distinct noise of springs and bits flying inside the pump!

It has snapped flush with the screw below so i can get pliers onto the top of it.

Thanks in advance for any ideas

Cheers

Alex

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[stephenmartin]

Hi Alex....

Have you tried drilling a hole in the remains and using an easy out....its a left handed threaded tap....as you tighten the left handed screw it should unscrew the broken bolt....be careful not to break the brittle tap.....

I did this once with an air wrench on a fly wheel bolt....it snapped the bolt in about 3 seconds flat....I had to take the whole engine out and take it to an engineering firm/garage.....what a nightmare.....now I only use hand ratchets.....

I think you can buy the easy outs from good motor factors...I think easy out is a trade name so just describe what you want and there may be an equivilent trade product....good luck

Steve

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[nickjaxe]

I have an old landrover with a DPA pump, the bleed screw screws into a nut type thingy, can you not just screw this out with the broken stud, then work on it in the vise, by the way are you sure its a DPA pump, seem to remember they were inline pumps on this engine but I maybe wrong.

Nick in cheshire.

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[alb40]

According to the manual the nut type thingy is an idling damper. Will any damage be caused if i unscrew it?

Its definitely the DPA pump BTW - it says it on the plate on the side

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[nickjaxe]

your pump sound different to mine, I have 2 bleed screws about mid way down the pump one on the pump body, one on the square alloy casting, is yours not like that, and have you bleed it before from were you did it, just been out to look at mine, the screw that you undid was it screwed into a big hex nut on a steel casting on the side of the pump.

Nick.

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[alb40]

Mine also has two bleeds screws - one on the side of the pump body and one on the top of the governor housing at the top of the pump. this link below shows a workshop manual for the engine.

http://www.semidiesel.com/olm/pdfs/bmc1500.pdf

Page 7 of it shows the position of the screws if that helps

I have bleed it from these point previously as shown in the manual. It is the one on the top of the pump that has broken and my workshop manual shows it as the idling damper. the online manual on the link above doesnt show that part as that manual must be for a slightly different model. My engine code is 15ZD i think that one is for a 15V engine. I dont know how the engines differ though