MBE 900 – Section 2.2 Fuel Injection Line

Section 2.2
Fuel Injection Line

Each fuel injection pump has a short injection line to the injection nozzle.‪

Section 2.2.1
Fuel Injection Line Removal

Remove the fuel injection line as follows:‪

1. Remove the engine trim panel. See Figure "Injection Line Removal" .
   

   1. Engine Trim Panel‪

   2. Injection Lines‪

   Figure 1. Injection Line Removal

   FIRE ‪

   To avoid injury from fire caused by heated diesel-fuel vapors:‪ Keep those people who are not directly involved in servicing away from the engine. Stop the engine immediately if a fuel leak is detected. Do not smoke or allow open flames when working on an operating engine. Wear adequate protective clothing (face shield, insulated gloves and apron, etc.). To prevent a buildup of potentially volatile vapors, keep the engine area well ventilated during operation.

2. Using the injection line socket J 46371 , loosen the injection line nuts at the pressure pipe and at the injector unit pump.

   Note: When removing the injection lines, the pressure pipe thrust bolt must be held in place.

   NOTICE:
   Do not crimp or nick the injection line tubing. Overbending the tubing can close the passage or restrict the flow of fuel. Nicks can cause weak spots that could lead to injection line failure.‪

3. Carefully remove the injection line from the engine.

Section 2.2.2
Fuel Injection Line Installation

Install fuel injection lines as follows:‪

1. Position the flared cone ends over the pressure pipe end and at the injection pump fittings; then install the injector line nuts finger-tight.
2. Using the injection line socket J 46371 , tighten the injection line nuts 25 N·m (18 lb·ft) at the pressure pipe and at the unit injector pump.
3. Bleed the fuel system.

   PERSONAL INJURY ‪
   To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked.‪

   PERSONAL INJURY ‪
   Diesel engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other reproductive harm.‪ Always start and operate an engine in a well ventilated area. If operating an engine in an enclosed area, vent the exhaust to the outside. Do not modify or tamper with the exhaust system or emission control system.

4. Run the engine and check for leaks. Tighten the connections as needed.
5. Install the engine trim panel. Tighten the hex bolts firmly.