01.8 Disassembly and assembly of cylinder head 352/352 A' 8 Remove nozzle holder with special tool No. 5. 9 Remove valves, see 05.8·2.2/1. 10 Remove protective sleeve with special tool No. 3. 11 Clean all parts, check and change if necessary. 12 Check valve guides and change if necessary, see 6.1/1. 13 Check valve seats and reface or renew if nec· essary. See 6.2/1 or 6.3/1. 14 Check injector nozzles, see 07.8·4.2/1. Assembly Insert new sealing ring for the protective sleeve into cylinder head. 2 Insert protective sleeve and tighten with special tool No. 3. Tightening torque, see 1.4/1.
3 Insert new sealing ring into the protective sleeve 4 Fit nozzle holder with nozzle into cylinder head observing lock on the nozzle holder (1) and groove (2) in the cylinder head. Important! Do not knock nozzle. 5.1/2