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VALVE SPRINGS

VALVE SPRINGS. SPRING TYPES. Uniform Pitch Variable Pitch Basket Coil Page 158 a, b, and c. MECHANICAL VIBRATION DAMPENERS. Full Length Half Length Page 158 d and e. VALVE SPRING INSPECTION. Spring Squareness and Free Length Spring Tension Closed Pressure Open Pressure Page 159.

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VALVE SPRINGS

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  1. VALVE SPRINGS

  2. SPRING TYPES • Uniform Pitch • Variable Pitch • Basket Coil • Page 158 a, b, and c

  3. MECHANICAL VIBRATION DAMPENERS • Full Length • Half Length • Page 158 d and e

  4. VALVE SPRING INSPECTION • Spring Squareness and Free Length • Spring Tension • Closed Pressure • Open Pressure • Page 159

  5. CHECKING INSTALLED HEIGHT • Measure between spring seat (Head) and retainer • Page 162 Figure (a) • Subtract spec from measurement • Difference is shim needed • Serrated side is installed toward head • Silver .030 inch • Copper .060 inch • Page 160

  6. PUSH RODS • Solid or Hollow • Solid Push Rods lube Rocker Arms through a passage in head • Hollow Push Rods lube Rocker Arms through internal passage • Check for straightness • Check for wear on ends • Check for wear at Push Rod guide plates • Page 252 Class 261 Lab

  7. ROCKER ARMS • Shaft mounted • Stud mounted • Check lock nut on stud mounted • Check for wear at fulcrum Page 252 Class 262 Lab

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