his article mainly introduces Check John Deere engine valve rotor inspection and valve installation Steps
05.2022 John Deere Service Advisor 5.3.182 CF Diagnostic Software
Insure that valve rotators turn freely in both directions.
Replace if defective.
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07.2022 John Deere & Hitachi Parts ADVISOR Parts Catalog EPC(CF＆AG＆CCE)
INSTALL VALVES
1. Apply engine oil to valve stems and guides.
2. Insert valves in head (in same location as found
during removal).
NOTE: Valves must move freely and seat properly.
3. Using JDG678 Valve Stem Seal Installer (A), slide
seal (B) over valve stem and onto valve guide tower (C).
4. Install valve springs and rotators.
5. Compress valve springs using JDE138 Valve Spring
Compressor and install new keepers on valves.
NOTE: After having installed the valves, strike end of
each valve three times with a soft mallet to
ensure proper positioning of the keepers.