ADAPTER 2457456 - Caterpillar

(1) Thickness of washer (new) ... 8.50 0.05 mm (.335 .002 in.) Thickness of groove in camshaft (new) ... 8.75 0.05 mm (.344 .002 in.)End play for the camshafts (new) ... 0.15 to 0.35 mm (.006 to .014 in.)(2) Diameter of the surfaces (journals) for the camshaft bearings (new) ... 85.88 0.02 mm (3.381 .001 in.) Bore in the bearings for the camshafts (after assembly) ... 86.00 0.06 mm (3.386 .002 in.)(3) Distance dowel is extended from end of R.H. rear and L.H. front camshafts ... 22.0 0.5 mm (.87 .02 in.)(4) Clean the threads of the bolts and the contact surfaces of the parts thoroughly. Put 9S3263 Thread Lock on the bolt threads and hand tighten only to a torque of ... 55 7 N m (41 5 lb.ft.) (5) Height of camshaft lobes. To find lobe height, use the procedure that follows:A. Measure camshaft lobe height (5).B. Measure base circle (7).C. Subtract base circle (STEP B) from lobe height (STEP A). The difference is actual lobe lift.D. Specified camshaft lobe lift (6) is: a. Exhaust lobe ... 9.078 mm (.3574 in.)b. Intake lobe ... 9.314 mm (.3667 in.)c. Injector lobe: Two bolt camshaft gear ... 13.678 mm (.5385 in.)One bolt camshaft gear ... 13.731 mm (.5406 n.)