3408 & 3408B DIESEL TRUCK ENGINE Caterpillar


Fuel Ratio Control

Usage:



(1) On Precombustion Chamber Engines, the valve has "P.C." on this surface.

On Direct Injection Engines, the valve has "D.I." on this surface.

(2) *6N515 Spring:

Length under test force ... 46.0 mm (1.81 in.)

Test force ... 30 ± 2 N (6.8 ± .4 lb.)

Free length after test ... 74.9 mm (2.95 in.)

Outside diameter ... 20.57 mm (.810 in.)

Color Code (stripes) ... one yellow

(3) **9N2797 Spring:

Length under test force ... 30.7 mm (1.21 in.)

Test force ... 140 ± 13 N (32.0 ± 2.9 lb.)

Free length after test ... 37.8 mm (1.49 in.)

Outside diameter ... 45.21 mm (1.780 in.)

Color Code (stripes) ... two silver

(3) *6N514 Spring:

Length under test force ... 32.3 mm (1.27 in.)

Test force ... 90 ± 9 N (19.8 ± 2.0 lb.)

Free length after test ... 37.8 mm (1.49 in.)

Outside diameter ... 45.42 mm (1.788 in.)

Color Code (stripes) ... one yellow

(3) *7N209 Spring:

Length under test force ... 32.3 mm (1.27 in.)

Test force ... 90 ± 9 N (19.8 ± 2.0 lb.)

Free length after test ... 37.8 mm (1.49 in.)

Outside diameter ... 45.42 mm (1.788 in.)

Color Code (stripes) ... two yellow

(4) **9N2141 Spring:

Length under test force ... 15.2 mm (.60 in.)

Test force ... 140 ± 13 N (32.0 ± 2.9 lb.)

Free length after test ... 31.0 mm (1.22 in.)

Outside diameter ... 32.5 mm (1.28 in.)

Color Code (stripes) ... one silver

(4) *6N513 Spring:

Length under test force ... 14.0 mm (.55 in.)

Test force ... 120 ± 9 N (26.9 ± 2.0 lb.)

Free length after test ... 31.0 mm (1.22 in.)

Outside diameter ... 32.54 mm (1.281 in.)

Color Code (stripes) ... one yellow


*For use with PC and DI engines.


**For use with PC and Later DI engines.


*For use with DI engines.
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