62--11161
5--4
5.2 INJECTION NOZZLE (Continued)
5.2.3 Valve Seat Tightness
1. Set the injection nozzle in a nozzle tester.
2. Raise the fuel pressure, and maintain 12.7MPa (130
kgf/cm
2
, 1850 psi) for 10 seconds.
3. If any fuel leak is found or if there is any loss of pres-
sure through the injection nozzle, replace the injec-
tion nozzle assembly.
Valve Seat
Tightness
Factory
Specification
No fuel leak at
12.7MPa
130 kgf/cm
2
1850 psi
5.2.4 Nozzle Holder
1. Secure the nozzle retaining nut (7) with a vise.
2. Remove the nozzle holder (1), and remove the parts.
3. If any fuel leak is found, replace the injection nozzle
assembly.
(When Reassembling)
Assemble the nozzle in clean fuel oil.
Install the push rod (4), noting its direction.
After assembling the nozzle, be sure to adjust the fuel
injection pressure.
Tightening Torque
Nozzle Holder
34.3 to 39.2 N--m
3.5 to 4.0 kgf--m
25.3 to 28.9 ft--lbs
Tightening Torque
Overflow Pipe
Nut
19.6 to 24.5 N--m
2.0 to 2.5 kgf--m
14.5 to 18.1 ft--lbs
Tightening Torque
Nozzle Holder
Assembly
49.0 to 68.6 N--m
5.0 to 7.0 kgf--m
36.2 to 50.6 ft--lbs
1. Nozzle Holder
2. Adjusting Washer
3. Nozzle Spring
4. Push Rod
5. Distance Piece
6. Nozzle Piece
7. Nozzle Retaining Nut
