1G
Fuel Flow Actuator Removal and Installation
Removal
1) Check that engine is cold and fuel pressure is not under pressure referring to Fuel Pressure Relief Confirmation Procedure:K9K .
2) Disconnect negative (–) cable at battery.
3) Remove injector cover.
4) Disconnect fuel injector connectors (1) and glow plug connectors (2) of No.3 and No.4 cylinders.
5) Remove high pressure pipe (3) of No.4 cylinder referring to High Pressure Pipes Removal and Installation:K9K .
6) Disconnect return hose (1) from venturi (2) on injection pump.
7) Plug disconnected hose and venturi of injection pump with cap available as a spare part to prevent them from entering dust. (Refer to “Precaution” under Fuel Delivery System Description:K9K for parts number and handling.)
8) Disconnect connectors from fuel temperature sensor (1) and fuel flow actuator (2).
9) Remove fuel flow actuator screws (3).
10) Pull out fuel flow actuator by hand using small successive turns.
CAUTION:
Do not use fuel flow actuator connector as a lever arm when turning fuel flow actuator.
Installation
Reference: Fuel Flow Actuator Inspection:K9K
For installation, reverse removal procedure noting the following.
• Do not apply to O-rings of fuel flow actuator with grease or used diesel oil. Apply oil (spare parts) to O-ring of fuel flow actuator.
• Tighten fuel flow actuator bolts to specified torque.
Tightening torque
Fuel flow actuator bolt ( a ): 5.5 N·m ( 0.55 kg-m, 4.0 lb-ft)
• Use new high pressure pipe of No.4 cylinder referring to High Pressure Pipes Removal and Installation:K9K .
• Check fuel leakage referring to Fuel Leakage Check:K9K .