Valve Guide - Inspect
Perform this test in order to determine if a valve guide should be replaced.
- Place a new valve in the valve guide.
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Illustration 1 | g00314806 |
Measure the radial movement of the valve in the valve guide. (1) Valve guide (2) Radial movement of the valve in the valve guide (3) Valve stem (4) Dial indicator (5) Lift the edge of the valve head 15.0 mm (0.60 inch) above the cylinder head. |
- Place a dial indicator with a magnetic base on the face of the cylinder head.
- Lift the edge of the valve head to a distance of 15.0 mm (0.60 inch).
- Move the valve in a radial direction away from the dial indicator. Make sure that the valve moves away from the dial indicator as far as possible. Position the contact point of the dial indicator on the edge of the valve head. Set the position of the needle of the dial indicator to zero.
- Move the valve in a radial direction toward the dial indicator as far as possible. Note the distance of movement which is indicated on the dial indicator.
Maximum permissible clearance of the valve which is lifted 15 mm (0.6 inch) in the valve guide
- Inlet valve guide ... 0.24 mm (0.009 inch)
- Exhaust valve guide. ... 0.28 mm (0.011 inch)
If the measurement is equal to or greater than the specifications that are given above, a new valve guide must be installed.
- Inlet valve guide ... 0.24 mm (0.009 inch)
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