4. DISASSEMBLY, INSPECTION AND REASSEMBLY OF ENGINES 4.2.7 Valve guide replacement 1) Use a valve guide extraction tool (12.1-1 in Chapter 12) and extract the valve guide from the cylinder head. 2) Put liquid nitrogen or ether (or alcohol) with dry ice added in a container and put the valve guide for replace- ment in it for cooling. Then insert it in with a valve guide inserting tool (Refer to No.2 of 4.1.2 in Chapter 4). Do not touch the cooled valve guide with bare hands to avoid skin damage. 3) Check the inside diameter and finish to the stan- dard inside diameter as required with a reamer. 4) Check the projection from the cylinder head.
mm 4-24 82E-5 – 98E-5 SERIES Model Number of valves Projection 3D82AE 2 valves 11.7 – 12.0 4D84E (S)3D84E 4D88E 14.7 – 15.0 S4D84E 4 valves 8.2 – 8.5 4D94LE (S)4D98E 9.7 – 10.0