Cylinder Head Valve Guide - Replacement (2-03) Section 2 - Cylinder Head - Group 02 M11 Page 2-20 Use vacuum tester, Part No. ST-1257, with vacuum cup, Part No. 3376100, to vacuum test the valve seating. Refer to Cylinder Head - Vacuum Test Valve Seating (2-10). Cylinder Head Valve Guide - Replace- ment (2-03) Disassembly Use valve guide driver, Part No. 3376398, to remove the old valve guides. Use a flexible brush and solvent to clean the valve guide bores in the cylinder head. Dry with compressed air. Inspection Measure the inside diameter of the valve guide bore in the cylinder head. Valve Guide Bore I.D.
mm in 16.480 MIN 0.6488 16.500 MAX 0.6496 If the valve guide bore is worn larger than the maximum specified, the valve guide bore can be machined, and a 0.51mm [0.020 inch] oversize valve guide installed. Refer to the Alternative Repair Manual, Bulletin No. 3810310.