Test And Adjustment Specifications - Yanmar 3TNV82A-B Service Manual

FUEL SYSTEM

Test and Adjustment Specifications

Model
3TNV82A - 4TNV88
3TNV82A - 4TNV88
3TNV84T - 4TNV84T
4TNV94L - 4TNV106
4TNV98T - 4TNV106T
Note: Fuel injection pressure of a new fuel injector is reduced approximately 72.5 psi (0.5 MPa; 5.0
kgf/cm 2 ) after about 5 hours of operation due to the initial break in of the engine. When adjusting a
new fuel injector or after it has been disassembled for service, adjust the fuel injector 72.5 psi (0.5
MPa; 5.0 kgf/cm
Note: All fuel injectors have a three character identification mark (Figure 7-3, (1)). The first character
starts with "V" or "W".
Figure 7-3
** Fuel injector identification is critical as each engine has a unique fuel injection pressure. The fuel
nozzle is specifically matched to the fuel injector by engine model and / or engine speed.
7-12
Engine Injector ID
Class mark*
CL W
W**
VM or
V**
CL
V
VM
2
) higher than the above standard.
(1)
0004105
Fuel Injector Pressure
2843 - 2988 psi
(19.6 - 20.6 MPa;
2
200 - 210 kgf/cm )
2843 - 2988 psi
(19.6 - 20.6 MPa;
200 - 210 kgf/cm 2 )
or
3133 - 3278 psi
(21.6 - 22.6 MPa;
2
220 - 230 kgf/cm )
3133 - 3278 psi
(21.6 - 22.6 MPa;
2
220 - 230 kgf/cm )
TNV DI Service Manual
Fuel System Specifications
Fuel Injection Timing
See Checking and Adjusting Fuel
Injection Timing on page 7-30