Installation Of Fuel Return Line; Fuel Injection Pump; Removal Of Fuel Injection Pump - Yanmar 2TNV70 Service Manual

FUEL SYSTEM

Installation of Fuel Return Line

1. Install a new copper gasket on each fuel
injector.
The fuel return line is a one-piece assembly. Use
care not to bend or twist the fuel return line.
2. Carefully reinstall the fuel return line assembly.
3. Reinstall and hand-tighten the fuel return line
nuts.
4. Tighten the fuel return line nuts to the specified
torque. See Special Torque Chart on page 7-6.
5. Reinstall the fuel return hose.
6. Reinstall the high-pressure fuel injection line
assembly. See Installation of High-Pressure
Fuel Injection Lines on page 7-11.

FUEL INJECTION PUMP

Removal of Fuel Injection Pump

1. Loosen the cooling fan V-belt.
2. Remove the engine cooling fan guard (if
equipped), engine cooling fan (Figure 7-7, (2)),
spacer (Figure 7-7, (3)) if equipped, V-pulley
(Figure 7-7, (4)) and cooling fan V-belt
(Figure 7-7, (1)).
7-12
NOTICE
(1)
Figure 7-7
3. Close any fuel valves in the fuel supply line.
4. Place a drain pan under the fuel injection pump
to catch any spillage.
5. Clean the area to keep contaminants from
entering the fuel system.
6. Remove the high-pressure fuel injection lines
as an assembly. See Removal of High-Pressure
Fuel Injection Lines on page 7-10.
7. Disconnect the fuel return lines from the fitting
on the fuel injection pump (Figure 7-8, (1)).
Plug the open ends of the lines to minimize
leakage and prevent contamination.
TNV IDI Service Manual
Fuel Injection Pump
(3)
(4)
0000163A
(2)