PUMP AS 3791544 - Caterpillar

1. Disconnect front fuel injection lines (1) and rear fuel injection lines (2) from the fuel injection pump and the cylinder head assembly.2. Remove fuel injection lines (1) and (2). Put caps and plugs on all fuel line connections to keep foreign material out of the fuel system. The following steps are for installation of the fuel injection lines.3. Remove the caps and plugs from the fuel injection line connections.4. Install front fuel injection lines (1) on the fuel injection pump and cylinder head assembly.6. Tighten the fuel injection line nuts to a torque of 40 7 N m (30 5 lb.ft.) with tool (A).