BOBCAT S130 – CYLINDER HEAD – Valve Guide-Checking

Remove the valve and spring from the cylinder head.
(See Cylinder Head Disassembly and Assembly on Page 70-80-7.)

Remove the carbon from the valve guide.

Measure the valve stem O.D. [Figure 70-80-25].

Measure the valve guide I.D. [Figure 70-80-25].

Calculate the clearance. If the clearance exceeds the allowable limit, replace the valve and/or valve guide.

To remove and replace the valve guide, make the driver tool as shown in figure [Figure 70-80-26].

Press the used valve guide out of the cylinder head using the special driver tool [Figure 70-80-27].

Put oil on the outside diameter of the new valve guide.

Press the new valve guide into the cylinder head from the top side. Use the special driver tools (Items 1 & 2) [Figure 70-80-27], press the new guide until the tool contacts the cylinder head.

Ream the valve guide to the correct specifications.

 

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