KRYOTEC ENGINE 45 22.Thoroughly clean crank shaft with standard cleaning solution. Use wire brush for cleaning oil holes. NOTE It is essential to recheck crankshaft for cracks and balance after grinding. 23.Apply grease to all machined surfaces, if crank shaft is to be stored. Crank shaft must always be stored in vertical position. 24.Thoroughly clean main bearing caps and corresponding machined surfaces of crankcase. NOTE Ensure that the serial numbers on crank case and main bearing caps are matching. Also caps are in order and notches for bearing shells are on same side. When using a crankshaft which has been refinished to the maximum value of 0.127 mm by the operation of grinding and lapping, the class must be chosen by means of dimensional measurement of the pin diameter as previously described. Do not attempt to refinish a crankshaft main bearing journal diameter more than 0.127 mm. Diameter adjustments greater than this endanger the structural strength of the crankshaft. If the adjustment required is greater than 0.127 mm, it is necessary to replace the crankshaft. The bearing shells used for adjustments greater than 0.127 mm are no longer available as a spare (although the relative number is still shown). The clearance between journal and bearing shell, obtained by the selection method indicated above, must be within the following values: Minimum: 0.011 mm - Maximum: 0.071mm. This value may be measured, as a final check. BEARING CLASS • Crankshaft journal class A (normal), 52.99453.000 mm, RED, code 1 (94 00). • Crankshaft journal class B (normal), 52.98852.994 mm, BLUE, code 2 (88 94). • Crankshaft journal class C (normal), 52.98252.988 mm, YELLOW, code 3 (82 88). • Crankshaft journal class D (refinished 0.127 mm), 52.867-52.873 mm, BROWN, code 6 (67 73). • Crankshaft journal class E (refinished 0.127 mm), 52.861-52.867 mm, GREEN, code 7 (61 67). • Crankshaft journal class F (refinished 0.127 mm), 52.855-52.861 mm, BLACK, code 8 (55 61) (*): Last two numbers (part thousandth) is the size of the main journals. NOTE Select the appropriate bearing shell class based on the following measurement procedure.
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