SPRING 9N4053 - Caterpillar

Illustration 1 g01426956
(1) Torque for the 16 bolts ... 55 7 N m (41 5 lb ft) (A) Protrusion of the dowel from the rear of the left camshaft assembly ... 12.0 0.5 mm (0.47 0.02 inch) (C) Dimensions for the bearing journal Diameter of the bearing journal ... 91.880 0.020 mm (3.6173 0.0008 inch) Bore in bearings for camshafts after assembly ... 92.00 0.06 mm (3.622 0.002 inch) (D) Dimensions for the thrust washer Thickness of new thrust washer ... 8.50 0.05 mm (0.335 0.002 inch) Thickness of groove in new camshaft ... 8.75 0.05 mm (0.344 0.002 inch) End play for new camshafts ... 0.15 to 0.35 mm (0.006 to 0.014 inch) (E) Dimensions for the dowel Protrusion of the dowel from the rear of the left camshaft's front half ... 22.0 0.5 mm (0.87 0.02 inch) Protrusion of the dowel from the front of the right camshaft's rear half ... 22.0 0.5 mm (0.87 0.02 inch)
Illustration 2 g01347116
(F) Specified camshaft lobe lift Exhaust lobe ... 9.9014 mm (0.38982 inch) Inlet lobe ... 10.0024 mm (0.39379 inch)In order to determine the actual camshaft lobe lift, use the following procedure:
Measure camshaft lobe height (G) .
Measure base circle (H) .
Subtract the base circle (H) from the camshaft lobe height (G) . The difference is the actual camshaft lobe lift.