Removal and Installation
REMOVAL1. Remove valve spring.
2. Before removing valve, remove any burrs from valve stem lock grooves to prevent damage to the valve guides. Identify valves to insure installation in original location.
3. Remove valve(s) from cylinder head.
CLEANING
1. Clean all valves thoroughly and discard burned, warped and cracked valves.
INSPECTION
INSPECTION - VALVES
1. Measure valve stems for wear (Fig. 32) approximately 60 mm (2.36 in.) below the valve lock grooves.
2. Compare measurement to specifications.
NOTE: Valve stems are chrome plated and should not be polished (Fig. 32).
INSPECTION - VALVE GUIDES
1. Measure valve stem-to-guide clearance as follows:
2. Install valve into cylinder head so it is 15 mm (0.590 in.) off the valve seat. A small piece of hose may be used to hold valve in place.
3. Attach dial indicator Tool C-3339 to cylinder head and set it at right angle of valve stem being measured (Fig. 33).
4. Move valve to and from the indicator.
5. Note dial indicator reading and compare to engine specifications.
NOTE: Replace cylinder head if stem-to-guide clearance exceeds specifications, or if guide is loose in cylinder head.
INSTALLATION
1. Coat valve stems with clean engine oil and insert them in cylinder head.
2. If valves or seats have been reground, check valve tip height (A) (Fig. 34). If valve tip height is greater than 43.65 mm (1.7185 in.) intake or 45.98 mm (1.8102 in.) exhaust, grind valve tip until within specifications. Make sure measurement is taken from cylinder head surface to the top of valve stem.
3. Install valve stem seals and valve springs.