HARRIER SERVICE MANUAL PART -1

KRYOTEC ENGINE 43 K. CRANK SHAFT Clean and carry out visual inspection of crank shaft for the following: 1. Overheating of journals, this is indicated by bluish brown color. 2. Scoring marks on journals 3. Cracks, which should be checked on magnetic crack detector 4. Check crank shaft run out by supporting it on V- block at 1 st and 5 th main bearing journals. 5. If run out exceeds permissible limits, straighten crank shaft in cold condition on press carefully. 6. Similarly check lateral and radial run outs of flywheel mounting flange. 7. Check crank shaft main bearing and crank pin journal dimension. 8. The following is an example of a class identification of the main journals. • Crank pin identification (1): The number on the left refers to the first pin on the timing side. The “N” at the end is a code not significant for 4-cylinder engines. • Crank journal identification (2): the first number on the left refers to the first journal on the timing side. The “N” at the end is a code not significant for 4-cylinder engines. • Number blocks (if any), in groups of two digits (3), indicate the size (thousandth part) of the main journals: the first two numbers on the left refer to the first journal on the timing side. • For the identification of the class of journals you should refer to the numerical code of reference (2). • In the case of the example, numbers 11111N indicate that all five pins are Class A (red).