VALVE GP- 1105609 - Caterpillar

Illustration 7 g00692899
(1) Allen head screws Tighten the allen head screw to the following torque. ... 27 N m (20 lb ft) (2) Hex head bolts Tighten the hex head bolts to the following torque. ... 51 N m (38 lb ft)Specifications
Illustration 8 g00465053
Crankshaft and main bearings for 4 cylinder engines (1) ChamferThe chamfer faces the front of the engine. (2) Upper half of the main bearing with the oil groove (3) Upper half of main bearing cap (4) Notch on the upper half of the main bearingThe notch in this position on the bearing cap faces the rear of the engine. This bearing cap is for the No. 2 bearing on three cylinder engines. (5) Connecting rod journal Diameter of the connecting rod journal ... 51.964 to 51.975 mm (2.0458 to 2.0463 inch) Service limit ... 51.90 mm (2.0433 inch)Note: If the service limit is exceeded, then the crankshaft must be replaced. (6) Main bearing journal Diameter of main bearing journal ... 67.957 to 67.970 mm (2.6755 to 2.6760 inch) Service limit ... 67.90 mm (2.6732 inch)Note: If the service limit is exceeded, then the crankshaft must be replaced. (7) Thrust washers Standard thickness ... 2.95 to 3.00 mm (0.1161 to 0.1181 inch) Service limit ... 2.80 mm (0.1102 inch) (8) Lower half of the main bearingThe lower half of the main bearing does not have an oil groove.Measure Wear on the Crankshaft
Illustration 9 g00464232
Measure the crankshaft journals for wear.Measure the diameters of the crankshaft journals that is shown in Illustration 3. This procedure measures wear and eccentricity. Measure the diameters of the connecting rod journals (5) and main journals (6) in positions (1) and (2). Measure the diameter (A) and (B) in each position. (1) (2) Taper The difference between positions (1) and (2) must not be more than the following value. ... 0.05 mm (0.0020 inch) (A) (B) Eccentricity The eccentricity must be the following value or the eccentricity must be less than the following value. ... 0.03 mm (0.0012 inch) Service limit ... 0.06 mm (0.0024 inch)Measure the Main Bearing Clearance
Illustration 10 g00464228
Illustration of the front main bearingMeasure the bore of the main bearings in positions (1) and (2). Measure the bore in the directions (A) and (B) in each position.Refer to the dimensions in this Module "Measure Wear on the Crankshaft". Subtract the smallest diameter of the crankshaft journal from the largest main bearing bore. The remainder is the clearance between the main bearing and the crankshaft journal.Clearance Standard