5-101.bk Page 31 Friday, March 17, 2006 11:05 AM INSPECTION Refer to Figure 5-36. 3. Use a depth gauge to check valve guide extension. Worn valve guides may result in poor valve-to- seat contact, valve damage or oil consumption. 1. Inspect valve guides for wear, damage, cracks and looseness. Refer to Figure 5-35. 2. Use a small bore gauge (1) to obtain an accurate valve guide bore (2) measurement. 1 Figure 5-36 — Checking Valve Guide Extension When reconditioning the cylinder head, it is recommended that all valve guides be replaced. VALVE GUIDE REMOVAL Clean exhaust valve guide OD (shoulder) before removal. Use a rotary brush to prevent scoring of exhaust valve guide bore.
Refer to Figure 5-37. 2 1. Insert valve guide remover J 37482 (1) into valve guide from deck side of the cylinder head (2). 200294a Figure 5-35 — Measuring Valve Guide Bore Page 5-31 200 BENCH PROCEDURES 1. Bore gauge 2. Valve guide bore