Engine Assembly (0-02) Section 0 - Engine Disassembly and Assembly - Group 00 M11 Page 0-100 Rotate the accessory drive shaft back and forth (before and after) the (zero) indicator reading for approxi- mately 3 degrees to be sure the piston is at TDC. Rotate the accessory drive shaft in the direction of engine rotation clockwise to 90 degrees after top dead center (ATDC). The piston plunger will be at the 90 degree’’ mark on the timing fixture. Position the push rod dial indicator contact tip in the center of the plunger rod and lower the gauge to within 0.63 mm [0.025 inch] of the fully compressed position. Set the push rod dial indicator to (zero).
Rotate the accessory drive shaft in the opposite direction of crankshaft rotation counterclockwise to TDC. Continue to rotate the accessory drive shaft counter- clockwise until the crankshaft is at 45 degrees before top dead center (BTDC). NOTE: This step is necessary to remove gear backlash in the engine.