SENDER AS-FUEL LEVEL 3940437 - Caterpillar

Clean the outer surface of the fuel injection pump housing and governor before the fuel check valve and bypass valve are removed.
1. Remove the fuel from the fuel injection pump housing. Install the fuel injection pump housing and governor on tool (A). 2. Remove five bolts (1) and cover (2) from fuel injection pump housing. 3. Remove fuel channel (3) from the cover (2). 4. Remove check valve (5).5. Remove spring (4) and bypass valve.Install Fuel Check Valve And Bypass Valve
1. Install check valve (3) in the fuel injection pump housing. Make sure the check valve is installed evenly in the fuel injection pump housing. Do not install a check valve that is bent.2. Install bypass valve (1) and spring (2) in the fuel injection pump housing. 3. Inspect the fuel channel gasket and make a replacement if necessary. Install the fuel channel (4) on cover. 4. Inspect the cover gasket (6) for damage and install the cover (5) on the fuel pump housing.