3304B & 3306B GENERATOR SET ENGINES Caterpillar


Fuel Injection Pump Housing

Usage:

(1) Diameter of the rack bearing in the governor end after assembly ... 12.746 ± 0.045 mm (.5018 ± .0018 in.)

Diameter of fuel rack ... 12.662 ± 0.005 mm (.4985 ± .0002 in.)

(2) Distance from the governor end of the pump housing to the end of the rack bearing ... 7.16 ± 0.13 mm (.282 ± .005 in.)

(3) Distance from the drive end of the pump housing to the end of the rack bearing ... 0.25 ± 0.25 mm (.010 ± .010 in.)

(4) Diameter of the rack bearing in the drive end after assembly ... 12.767 ± 0.058 mm (.5026 ± .0023 in.)

(5) Inside diameter of the camshaft bearing in the governor end of the pump housing after assembly ... 68.339 ± 0.039 mm (2.6905 ± .0015 in.)

Diameter of the camshaft bearing journal ... 68.250 ± 0.013 mm (2.6870 ± .0005 in.)

Install the camshaft bearing in the pump housing with the bearing joint at the top of the vertical centerline.

(6) Distance from the governor end of the pump housing to the end of the camshaft bearing ... 0.25 ± 0.20 mm (.010 ± .008 in.)

(7) Distance from the drive end of the pump housing to the end of the camshaft bearing ... 1.00 ± 0.25 mm (.039 ± .010 in.)

(8) Inside diameter of the camshaft bearing in the drive end of the pump housing ... 55.090 ± 0.039 mm (2.1689 ± .0015 in.)

Diameter of the camshaft bearing journal ... 55.000 ± 0.013 mm (2.1654 ± .0005 in.)

Install the camshaft bearing in the pump housing with the bearing joint at the top of the vertical centerline.

(9) Distance from the centerline of the pump bore to the end of the dowel ... 15.03 ± 0.25 mm (.592 ± .010 in.)

(10) Distance from flat surface of the rack bearing to the opposite wall of the bore after assembly ... 11.178 ± 0.050 mm (.4401 ± .0020 in.)

(11) Install the rack bearing with the flat surface (as shown) to an angle of ... 15°

(12) Distance from the end of the dowel to the opposite wall of the bore ... 26.442 + 0.150 - 0.050 mm (1.0410 + .006 - .002 in.)

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