3408C & 3412C INDUSTRIAL ENGINES Caterpillar


Fuel Injection Pump

Usage:

(1) Bore for the rack and diameter of the rack:

Bore in bearing (after installation) in housing ... 12.767 ± 0.058 mm (.5026 ± .0023 in)

Diameter of rack (new) ... 12.662 ± 0.005 mm (.4985 ± .0005 in)

(2) Thickness of 7E9907 Spacer ... 6.761 ± 0.005 mm (.2662 ± .0002 in)

(3) Bore in bearings for camshaft (after assembly) ... 68.339 ± 0.038 mm (2.6905 ± .0015 in)

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

(4) Tighten bolts to a torque of ... 14 ± 4 N·m (10 ± 3 lb ft)

(5) 8N5993 Reverse Flow Check Valve Spring:

Length under test force ... 11.50 mm (.453 in)

Test force ... 151 ± 8 N (33.9 ± 1.8 lb)

Free length after test ... 15.81 mm (.622 in)

Outside diameter ... 10.36 mm (.408 in)

(6) 4P7124 Orificed Reverse Flow Check Valve Spring:

Length under test force ... 5.07 mm (.200 in)

Test force ... 8.2 ± 0.8 N (1.85 ± .18 lb)

Free length after test ... 5.60 mm (.220 in)

Outside diameter ... 4.80 mm (.189 in)

(7) 118-0540 Lifter Spring:

Length under test force ... 48.87 mm (1.924 in)

Test force ... 210 ± 10 N (47.2 ± 2.3 lb)

Free length after test ... 53.87 mm (2.121 in)

Outside diameter ... 34.21 mm (1.347 in)

(8) Length of injection pump plunger ... 77.423 ± 0.013 mm (3.0481 ± .0005 in)

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