Yanmar 2TNV70 - Fuel System Specifications; Special Torque Chart; Test and Adjustment Specifications

FUEL SYSTEM
7-6
TNV IDI Service Manual
Fuel System Specifications
FUEL SYSTEM SPECIFICATIONS
Special Torque Chart
Test and Adjustment Specifications
Note: Fuel injector pressures given are for used parts. New injectors (5 hours operation or less) will read
approximately 72.5 psi (0.5 MPa; 5 kgf/cm
2
) higher.
Component Tightening Torque
Lubricating Oil Application
(Thread Portion and Seat Surface)
Fuel Injector
36.1 - 43.5 ft·lb
(49 - 59 N·m,
5.0 - 60 kgf·m)
Not Applied
Fuel Pump Drive Gear Nut
44 - 51 ft·lb
(59 - 69 N·m;
6 - 7 kgf·m)
Not Applied
High -Pressure Fuel Injection Line Nuts
22 - 25 ft·lb
(29 - 34 N·m;
3.0 - 3.5 kgf·m)
Not Applied
Fuel Return Line Nuts
18 - 24 ft·lb
(24 - 33 N·m;
2.5 - 3.3 kgf·m)
Not Applied
Fuel Injection Pump Mounting Nuts
17 - 21 ft·lb
(23 - 28 N·m;
2.3 - 2.9 kgf·m)
Not Applied
Fuel Injector Nozzle Case Nut
21.4 - 36.1 ft·lb
(29 - 49 N·m;
3.0 - 5.0 kgf·m)
Not Applied
Fuel Injector Pressure Fuel Injection Timing
1784 - 1929 psi
(12.3 - 13.3 MPa;
125 - 136 kgf/cm
2
)
See Checking and Adjusting Fuel Injection Timing on
page 7-18
TNV_IDI_ServiceManual_A4.book 6 ページ ２０１２年２月２４日 金曜日 午前１０時２４分