3412 Generator Set Engines Caterpillar

Illustration 1	g00374407
Typical section

(1) Camshaft bearings

After assembly into the housing, the camshaft bearing bore is the following value. ... 53.988 ± 0.038 mm (2.1255 ± .0015 inch)

Diameter of bearing surface of the camshaft ... 53.889 ± 0.050 mm (2.1216 ± .0020 inch)

Illustration 2	g00374069

(2) 1W-6985 Flow Check Spring

Length under test force ... 7.63 mm (.300 inch)

Test force ... 8.3 ± 0.8 N (1.87 ± .20 lb)

Free length after test ... 8.54 mm (.336 inch)

Outside diameter ... 3.2 mm (.13 inch)

(3) 8N-1415 Spring

Length under test force ... 8.69 mm (0.3421 inch)

Test force ... 111.21 ± 6.45 N (25.001 ± 1.450 lb)

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

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

(4) 7N-1208 Spring

Length under test force ... 29.26 mm (1.152 inch)

Test force ... 325 ± 16 N (73 ± 4 lb)

Free length after test ... 48.03 mm (1.891 inch)

Outside diameter ... 25.27 mm (.995 inch)

(5) Length of fuel injection pump plunger ... 69.118 ± 0.013 mm (2.7212 ± .0005 inch)