Tube(S), Fuel: Installation
Cleanliness cannot be overemphasized when handling or replacing diesel fuel system components. This especially includes the fuel injectors, high-pressure fuel lines and fuel injection pump. Very tight tolerances are used with these parts. Dirt contamination could cause rapid part wear and possible plugging of fuel injector nozzle tip holes. This in turn could lead to possible engine misfire. Always wash/clean any fuel system component thoroughly before disassembly and then air dry. Cap or cover any open part after disassembly. Before assembly, examine each part for dirt, grease or other contaminants and clean if necessary. When installing new parts, lubricate them with clean engine oil or clean diesel fuel only. DO NOT use any lubricating or sliding agents that contain water.
WHEN LOOSENING OR TIGHTENING HIGH-PRESSURE LINE FITTINGS ATTACHED TO A SEPARATE FITTING, USE A BACK-UP WRENCH ON FITTING. DO NOT ALLOW FITTING TO ROTATE. DAMAGE TO BOTH FUEL LINE AND FITTING WILL RESULT.
- Remove protective caps from the fuel rail and fuel injection pump.NOTE:
The fuel tubes are a one time only use and must be replaced anytime they have been removed.
- Install the NEW
rail-to-injection pump fuel tube and tighten union nut (2) finger tight.
- Tighten the fuel tube union nut (1) at the fuel rail to 19 N.m (168 in. lbs.).
- Tighten the fuel tube union nut (2) at the fuel injection pump to 25 N.m (18 ft. lbs.).
- Install fuel tube clamp bolt (1) and tighten to 10 N.m (89 in. lbs.).
- Remove the protective caps from the fuel injectors and fuel rail.
- Install the new fuel tubes (2). Tighten fuel tubes to:
- Fuel tube union nut (1) at the fuel injector to 25 N.m (18 ft. lbs.).
- Fuel tube union nut (3) at the fuel rail to 19 N.m (168 in. lbs.).
- Connect negative battery cable.
- Start the engine and check for leaks.
- Install the engine cover.