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TM-9-2320-366-34-4 MTV Direct Maintenance Manual M1083 Series - Volume 4 Download

Page 196 of 796

TM 9-2320-366-34-4 20-3. CYLINDER HEAD REPAIR (CONT) (9) Inspect 12 valve seat inserts (7) for damage and wear. Refer to Table 20-3 Valve Seat Insert Specifications. Table 20-3. Valve Seat Insert Specifications Intake valve seat insert bore diameter (J) 1.9608-1.9708 in. (4.998-5.005 cm) Exhaust valve seat insert bore diameter (J) 1.6853-1.6953 in. (4.280-4.306 cm) Intake valve seat insert face angle (K) 29.75-30.75 degrees 0.52-0.536 (rad) Exhaust valve seat insert face angle (K) 45-46 degrees 0.785-0.803 (rad) Seating face outside diameter, intake (L) 1.89 in. (4.8 cm) Seating face outside diameter, exhaust (L) 1.59 in. (4.03 cm) Valve seat bore depth, intake (M) 0.389-0.399 in. (0.98- 1.01 cm) Valve seat bore depth, exhaust (M) 0.389-0.399 in. (0.98- 1.01 cm) 20-14