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| Case Tractors Discussion Forum |
1989 Case 580L backhoe
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James Paxton
01-06-2008 16:24:06
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i have a 1989 580L case backhoe with a 3.9 ltr cummins engine. the problem that i am having is when i accelerate the engine misses and has heavy black smoke from the exhaust. As a result there's a lack of power. I am not sure how to set the pump timing.
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Rich in Garrett
01-06-2008 17:22:02
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Re: 1989 Case 580L backhoe in reply to James Paxton, 01-06-2008 16:24:06
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have you replaced the air filter? I know it sounds to simple, but a dirty or wet frozen filter will starve the engine air and make it roll black smoke under load. Pull the filter, fire it up, run the throttle out and see if it still smokes. Good luck
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mEl
01-06-2008 17:04:45
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Re: 1989 Case 580L backhoe in reply to James Paxton, 01-06-2008 16:24:06
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James the 3.9 of that vintage uses a timing gear lock pin to locate TDC then a dial indicator adapter is screwed into the injection pump. A dial indicator is then used to set a specified amount of plunger lift, accomplished by turning the pump in its slots at the mounting base. Authorised Case dealers are required to have these special tools but they are not generally offered to the public. Pump timing generally doesn't change unless someone physically loosened the pump, maybe the pump is failing, have you checked the air filters and the intake tract for restriction?
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