PRE-RELEASE
Valve Spring Inspection and Measurement
| Valve Spring Inspection and Measurement |
Special Tools
EN 22738-B Valve Spring TesterFor equivalent regional tools, refer to Special Tools .
| Inspection Procedure |
| 1. |
Clean the valve springs in solvent.
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| 2. |
Refer to
Safety Glasses Warning
.
Dry the valve springs with compressed air. |
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| 3. |
Inspect the valve springs for broken coils or coil ends.
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| Measurement Procedure |
| 1. |
Measure valve spring tension with tester
EN 22738-B
. See
Mechanical specifications, engine (LF1)
Mechanical specifications, engine (LAU or LBW)
.
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|
| 2. |
If low valve spring load is found, replace the valve springs. DO NOT use shims to increase spring load. The use of shims can cause the valve spring to bottom out before the camshaft lobe is at peak lift.
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