HOSE AS 3419496 - Caterpillar

1. Remove the fuel lines from the fuel injection pump housing and the cylinder head. Put protection caps on all fuel line connections to keep dirt and foreign material out of the fuel system.
If fuel line clamps are not installed in their exact location, vibration can cause the fuel lines to break and cause possible personal injury, or damage to the machine.
2. If a separation of the fuel lines has to be made, make sure the exact location of the clamps are marked for assembly purposes. Remove the clamps and make a separation of the fuel lines. The following steps are for installing the fuel lines.3. Connect the fuel lines with the clamps. Make sure the clamps are installed back in their correct location. Use tool (A) to tighten the clamp bolts to a torque of 2.3 N m (20 lb in). See 3406B Specifications, or Testing & Adjusting modules.4. Install the fuel lines on the fuel injection pump housing and the cylinder head. Tighten the fuel lines to a torque of 40 7 N m (30 5 lb ft).