AIR COMPRESSOR GP 1029551 - Caterpillar

Illustration 1 g01381231
(1) Left hand camshaft assembly
(2) Right hand camshaft assembly (A) Thickness of the groove in a new camshaft assembly ... 8.75 0.05 mm (0.344 0.002 inch) (C) Extension of the dowel from the camshaft assembly ... 12.0 0.5 mm (0.47 0.02 inch) (D) Thickness of a new thrust washer ... 8.50 0.05 mm (0.335 0.002 inch) (E) Dimensions for the journal surface Diameter of bearing journal ... 91.88 0.02 mm (3.617 0.001 inch)Bore in camshaft bearing after installation ... 92.00 0.06 mm (3.622 0.002 inch)Note: End play for a new camshaft assembly is 0.15 to 0.35 mm (0.006 to 0.014 inch). (3) Torque for 16 bolts ... 55 7 N m (41 5 lb ft) (F) Extension of the dowel from the end of the rear right hand camshaft and the front left hand camshaft ... 22.0 0.5 mm (0.87 0.02 inch)
Illustration 2 g01447245Use the following procedure in order to determine the actual camshaft lobe lift:
Measure camshaft lobe height (H).
Measure base circle (J).
Subtract the base circle (J) from the camshaft lobe height (H). The difference is the actual camshaft lobe lift. (G) Specified camshaft lobe lift Inlet lobe ... 13.250 mm (0.5217 inch)Injector lobe ... 13.731 mm (0.5406 inch)Exhaust lobe ... 13.250 mm (0.5217 inch)