CYLINDER BLOCK AS 4205231 - Caterpillar

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Illustration 1 g00295230
Typical example
(A) Direction toward the front of the engine.
Illustration 2 g00295231 (1) Washer Thickness of a new washer ... 8.50 0.05 mm (0.335 0.002 inch)Thickness of the groove in a 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) (2) Journal surface Diameter of surface (journals) for new camshaft bearings ... 85.88 0.02 mm (3.381 0.001 inch)Bore in bearings for camshafts after assembly ... 86.00 0.06 mm (3.386 0.002 inch) (3) Dowel The dowel extends from the end of the rear right hand camshaft and the front left hand camshaft by the following value. ... 22.0 0.5 mm (0.87 0.02 inch) (4) Bolt Clean the threads of the bolts and the contact surfaces of the parts thoroughly. Hand tighten the bolts to the following torque. ... 55 7 N m (40 5 lb ft) (6) Camshaft lobe height In order to determine the height, use the procedure that follows:
Measure camshaft lobe height (5).
Measure base circle (7).
Subtract the base circle (Step 2) from the lobe height (Step 1). The difference is the actual lobe lift.
Specified camshaft lobe lift (6) Inlet lobe (8) ... 9.314 mm (0.3667 inch)Injector lobe (9) ... 13.731 mm (0.5406 inch)Exhaust lobe (10) ... 9.078 mm (0.3574 inch)