Fuel System Specifications; Special Torque Chart; Test And Adjustment Specifications - Yanmar 3TNV82A Service Manual

FUEL SYSTEM

FUEL SYSTEM SPECIFICATIONS

Special Torque Chart

Component
Fuel Injector Retainer Bolt
Fuel Pump Drive
Gear Nut
High-Pressure Fuel Injection Line Nuts
Fuel Return Line Bolts
Fuel Injection Pump Mounting Nuts
Fuel Injector Nozzle Case Nut
Fuel Injection Pump Plunger
Plug

Test and Adjustment Specifications

Model
3TNV82A - 4TNV88
3TNV82A - 4TNV88
4TNV106, 4TNV106T
Note: Fuel injector pressures given are for used parts. New injectors (5 hours operation or less) will read
approximately 725 psi (5 MPa; 51 kgf/cm
* All DI injectors have 3 letters with the first letter starting with a V or W.
7-8
3TNV82A
to
(78 - 88 N·m; 8 - 9 kgf·m)
4TNV88
4TNV94 to
4TNV106T
3TNV82A
to
4TNV88
4TNV94 to
4TNV106T
Engine Injector ID
Class mark*
CL V
VM
W
ALL
2
Tightening Torque
29 ft·lb
(39.2 N·m;
4 kgf·m)
58 - 65 ft·lb
83 - 91 ft·lb
(113 - 123 N·m;
11.5 - 12.5 kgf·m)
22 - 25 ft·lb
(29 - 34 N·m;
3.0 - 3.5 kgf·m)
69 - 87 in·lb
(7.8 - 9.8 N·m;
0.8 - 1.0 kgf·m)
17 - 21 ft·lb
(23 - 28 N·m;
2.3 - 2.9 kgf·m)
30 - 33 ft·lb
(39.2 - 44.1 N·m;
4 - 4.5 kgf·m)
22 - 26 ft·lb
(30 - 35 N·m;
3.1 - 3.6 kgf·m)
30 - 33 ft·lb
(40 - 45 N·m;
4.1 - 4.6 kgf·m)
Fuel Injector Pressure
3133 - 3278 psi
(21.6 - 22.6 MPa;
2
220 - 230 kgf/cm
2843 - 2988 psi
(19.6 - 20.6 MPa;
2
200 - 210 kgf/cm
) higher.
TNV DI Service Manual
Fuel System Specifications
Lubricating Oil Application
(Thread Portion and Seat Surface)
Not Applied
Not Applied
Not Applied
Not Applied
Not Applied
Not Applied
Not Applied
Not Applied
Not Applied
Fuel Injection Timing
See Checking and Adjusting Fuel
Injection Timing on page 7-26