Doosan 50001, Shop Manual

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SP001693 Engine
Page 174
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 725 psi (5 MPa; 51 kgf/cm
2
) higher.
* All DI injectors have 3 letters with the first letter starting with a
V or W.
Special Service Tools
Component Tightening Torque
Lubricating Oil Application
(Thread Portion and Seat Surface)
Fuel Injector Retainer Bolt
29 ft•lb
(39.2 N•m; 4 kgf•m)
Not Applied
Fuel Pump Drive Gear Nut
83 - 91 ft•lb
(113 - 123 N•m; 11.5 - 12.5 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 Bolts
69 - 87 in•lb
(7.8 - 9.8 N•m; 0.8 - 1.0 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
30 - 33 ft•lb
(39.2 - 44.1 N•m; 4 - 4.5 kgf•m)
Not Applied
Fuel Injection Pump Plunger
Plug
30 - 33 ft•lb
(40 - 45 N•m; 4.1 - 4.6 kgf•m)
Not Applied
Engine
Class
Injector ID
mark*
Fuel Injector Pressure Fuel Injection Timing
CL
VM
V
3133 - 3278 psi
(21.6 - 22.6 MPa; 220 - 230 kgf/cm
2
See “Checking and Adjusting Fuel
Injection Timing” on page -189
No. Illustration Tool name Application
1
Torque
Wrench
Locally
Available
For tightening nuts and bolts to the
specified torque