CYLINDER HEAD Inspection (Cont'd) Replacement Replace valve or valve guide. 1. Heat cylinder head to 150 to 160C (302 to 320F) and drive out valve guide with a press [under a 20 kN (2t, 2.2 US ton, 2.0 Imp ton) pressure] or hammer, and suitable tool. semen SEMsn Amuaa , 2. Ream cylinder head valve guide hole. ssmsu 3. Heat cylinder head to 150 to 160C (302 to 320F) and press service valve guide into cylinder head. //:_\ 12. 7- I33 mm (0500- 051 in) e? 4. Ream valve guide. Finished size: 7.005 - 7.020 mm (0.2758 - 0.2764 in) SEM542 SEMOO7