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Valve Spring Strength

SPECIAL TOOL(S) CHART

Tool No. Illustration Description
ST1278-A
G03862303Courtesy of FORD MOTOR CO.
 Valve/Clutch Spring Tester 303-006 (TOOL-6513-DD) or equivalent
  1. Use a spring tester to check the valve spring for correct strength at the specified valve spring length.
    • For additional information, refer to SPECIFICATIONS  in the appropriate article in ENGINE.
    • If out of specification, install new components as necessary. Refer to the appropriate article in ENGINE for the procedure.
    Fig 1: Checking Valve Spring For Correct Strength At Specified Valve Spring Length
    G03862304Courtesy of FORD MOTOR CO.
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