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catmastertech
catmastertech, Technician
Category: Construction and Road Equipment
Satisfied Customers: 2243
Experience:  Field service technician for CAT 19 years.
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I have 939c I have replaced fuel filter and sediment bowl.

Customer Question

I have 939c I have replaced fuel filter and sediment bowl. If I prime it the machine will start and run real rough for a couple of minutes then die. I have to prime just to get it started I've had issues with fuel filters needing to be replaced after a couple of hours now it won't run
Submitted: 1 year ago.
Category: Construction and Road Equipment
Expert:  catmastertech replied 1 year ago.
Hello,Go to the transfer/lift pump on the side of the injection pump and remove the supply fitting bolt.Inside this bolt you will find a screen, remove the screen and clean it. This screen is not shown on PM service information and is often missed.If your machine is different, please post the full machine serial number with your reply.
Customer: replied 1 year ago.
Serial # ***** is that the bolt under the primer pump?

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