Tension

Inspect the valve spring, valve spring retainers and valve spring retainer keys for wear or damage. Discard any damaged parts.

NOTE: Make sure the valve springs are reassembled to their OWN ORIGINAL DAMPERS by pushing damper on the valve spring. DO NOT OPEN damper with any kind of tool when reassembling.





Check the valve springs for proper pressure at the specified valve spring lengths using Valve Clutch Spring Tester 303-006 (TOOL-6513-DD) or equivalent. Weak valve springs cause poor engine performance. Replace any valve spring not within specification. Manually rotating the valve spring while installed in the engine will not determine condition of valve springs.