HOOD AS-ENGINE 4207495 - Caterpillar

(1) Width of groove in camshaft for thrust washer (new) ... 4.83 0.05 mm (.190 .002 in) Thickness of thrust washer (new) ... 4.65 0.03 mm (.183 .001 in)End play of the camshaft (new) ... 0.18 0.08 mm (.007 .003 in)Maximum permissible end play (worn) ... 0.64 mm (.025 in)(2) Diameter of camshaft bearing surface (journal) (new) ... 58.699 0.013 mm (2.3110 .0005 in)(3) Bore in bearing for camshaft (new) ... 58.80 0.06 mm (2.315 .002 in) Clearance between bearing and bearing surface (journal) (new) ... 0.03 to 0.17 mm (.001 to .007 in)Maximum permissible clearance between bearing and bearing surface (journal) (worn) ... 0.20 mm (.008 in) (5) Height of camshaft lobes. To find lobe lift, use the following procedure: A. Measure camshaft lobe height (5).B. Measure base circle (6).C. Subtract base circle (STEP B) from lobe height (STEP A). The difference is actual lobe lift (4).D. Specified camshaft lobe lift (4) is: a. Exhaust lobe ... 8.382 mm (.3300 in)b. Intake lobe ... 8.382 mm (.3300 in)Maximum permissible difference between actual lobe lift (STEP C) and specified lobe lift (STEP D) is ... 0.25 mm (.010 in)