TM-9-2320-366-34-4 MTV Direct Maintenance Manual M1083 Series - Volume 4 Download
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TM 9-2320-366-34-4 20-3. CYLINDER HEAD REPAIR (CONT) c. Inspection (General). NOTE Replace any part that fails visual inspection or size measurement requirements. (1) Inspect 12 intake and exhaust valves (1) for signs of cracking, wear, and overheating. (2) Measure 12 intake and exhaust valves (1) for reuse. Refer to Table 20-1 Valve Specifications. Table 20-1. Valve Specifications Description Intake 7W8064 Exhaust 7W2699 Overall length (C) 6.958-6.994 in. (17.67-17.76 cm) 6.943-6.979 in. (17.63-17.72 cm) Valve head diameter (D) 1.845-1.856 in. (4.68-4.71 cm) 1.570-1.580 in. (3.98-4.01 cm) Valve face angle (E) 29.5°-30° 44.75°-45.25° New stem diameter (F) 0.3147-0.3153 in. (0.799-0.800 cm) 0.3147-0.3153 in. (0.799-0.800 cm) Minimum stem diameter within area (F) 0.3136 in. (0.796 cm) 0.3136 in. (0.796 cm) New lip thickness (H) 0.118-0.134 in. (0.30-0.34 cm) 0.103-0.119 in. (0.26-0.30 cm) Minimum lip thickness (H) 0.071 in. (0.18 cm) 0.060 in. (0.15 cm) 20-12