3034 Engine for Caterpillar Built Machines Caterpillar

Illustration 1	g00692241

(1) Diameter of main journals ... 64.951 to 64.970 mm (2.5571 to 2.5578 inch)

(2) Diameter of connecting rod journals ... 52.95 to 52.97 mm (2.084 to 2.085 inch)

(3) Width of number one journal ... 32.80 to 34.20 mm (1.290 to 1.350 inch)

(4) Width of number four journal ... 33.000 to 33.040 mm (1.2992 to 1.3008 inch)

(5) Width of number two, three, and five journals ... 32.95 to 33.05 mm (1.297 to 1.301 inch)

(6) Width of connecting rod journals ... 30.05 to 32.95 mm (1.183 to 1.297 inch)

(7) Radius of main journals and connecting rod journals ... 3.3 to 3.7 mm (0.13 to 0.14 inch)

Illustration 2	g00783159

(8) Recess for pilot bearing

Depth of recess for pilot bearing ... 11.6 to 12.6 mm (0.46 to 0.50 inch)

Diameter of recess for pilot bearing ... 40.000 to 40.025 mm (1.5748 to 1.5757 inch)

(9) Crankshaft end play

Minimum permissible end play ... 0.040 to 0.275 mm (0.0015 to 0.0108 inch)

Maximum permissible end play ... 0.405 mm (0.0159 inch)

Thrust washers

Standard thickness ... 2.380 to 2.440 mm (0.0937 to 0.0961 inch)

Oversize thickness ... 2.58 to 2.64 mm (0.1016 to 0.1039 inch)

Crankshaft gear

Diameter of bore ... 31.936 to 31.961 mm (1.2573 to 1.2583 inch)

Maximum permissible temperature of the gear for installation on the crankshaft ... 300 °C (572 °F)