TM 9-2815-225-34&P 3-37.  CRANKSHAFT REPAIR (Contd) LOCATION/ITEM ACTION REMARKS b.  Inspection (Contd) 24.     New crankshaft gear (7) Install as follows: removed only if damaged a.  Install new gear-to-crankshaft key (6) on crankshaft keyway (9). WARNING Wear heat-resistant gloves when handling heated crankshaft gear.  Failure to comply may result in injury to personnel. CAUTION Use caution when heating crankshaft gear.  Make sure there is equal distribution of heat in oven.  Do not let crankshaft gear become overheated.  Overheating will change hardness of crankshaft. b.  Heat new crankshaft gear (7) in oven at 400°F (204°C) for at least one hour.  Then remove using heat- resistant gloves. NOTE The crankshaft gear must be installed with timing mark facing out. c.  Liberally lubricate crankshaft gear step (8) of crankshaft (2) with OE/HDO 30 lubricating oil. d.  Align keyway on crankshaft Wear heat-resistant gloves similar gear (7) with new gear-to-crank- to welding gloves when handling shaft key (6) on crankshaft (2). hot crankshaft gear (7). e.  Drive crankshaft gear (7) Tubing should have an inside on crankshaft gear step (8) with diameter corresponding to a piece of tubing. outside diameter of crankshaft gear step (8). FOLLOW-ON TASK: Install engine crankshaft and main bearings (para. 3-68). 3-168