3304B & 3306B MARINE ENGINES Caterpillar


Fuel Injection Pump

Usage:

Injection timing before TC (top center):

3304B

Injection Pump Group 2W0263 ... 21 ± 1 degree

Injection Pump Group 2W6178 ... 27 ± 1 degree

3306B

Injection Pump Group 6I2834 ... 21 ± 1 degree

Injection Pump Group 108-4830 ... 25 ± 1 degree

NOTE: For the correct timing specifications for the adjustment of the fuel injection pump groups not listed refer to the Engine Information Plate, TMI (Technical Marketing Information), or Fuel Setting And Related Information Fiche.

Torque for the nuts that hold the fuel lines (use 5P0144 Fuel Line Socket) ... 40 ± 7 N·m (30 ± 5 lb ft)

(1) Torque for bushing ... 165 ± 14 N·m (120 ± 10 lb ft)

(2) 8N1415 Spring (reverse flow check):

Length under test force ... 8.69 mm (.342 in)

Test force ... 111.21 ± 6.45 N (25 ± 1 lb)

Free length after test ... 12.12 mm (.477 in)

Outside diameter ... 9.78 mm (.385 in)

(3) Thickness of 4W6869 Spacer ... 5.049 ± 0.005 mm (.1988 ± .0002 in)

(4) Lifter spring (fuel pump).

4P9831 Spring

Length under test force ... 44.5 mm (1.75 in)

Test force ... 74.5 ± 3.73 N (17 ± .8 lb)

Free length after test ... 47.85 mm (1.884 in)

Outside diameter ... 25.98 ± 0.15 mm (1.023 ± .006 in)

(5) Length of pump plunger (new) ... 73.89 ± 0.013 mm (2.909 ± .0005 in)

Minimum permissible length (worn) ... 73.873 mm (2.9084 in)

(6) Distance from housing to end of rack when rack and gears are engaged at center of fourth tooth position ... 7.24 ± 0.08 mm (.285 ± .003 in)

(7) Torque for plugs ... 5 ± 1 N·m (44 ± 9 lb in)

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