Checking, exchanging valve guides 01.8 352/352 A Checking Disassemble cylinder head, referring to 5.1/1. 2 Clean valve guide, removing carbon deposits with special tool No. 11 or No. 12, 3 Check bore using special tool No. 16 or No. 18. Exchanging Drive out valve guide using special tool No. 7 or No. 8. 2 Clean and check basic bore in cyl inder head. See 1.2/4 for table. 3 If "repair stage" valve guides are to be fitted, ream basic bore to next higher repair stage, using spe· cial tool No.13. See 1.2/4 for repair stages. UKD 30 402 21 42-01 6.1/1