Replacement

Specifications:

Renewing:
1 Remove old valve seat ring by means of a ring seat turning tool.





2 Check valve guides, renew if necessary. Service and Repair
3 Measure basic bore D 1.
A new valve seat ring standard dimension may be used if the specified overlap is available.
4 Machine basic bore repair stage D 1 with the valve seat ring turning tool until the bore is just clean.
5 Measure machined basic bore.
6 Machine valve seat ring repair stage until the specified overlap is attained.





7 Heat cylinder head in water bath.
8 Cool valve seat ring in liquid nitrogen.





9 Install valve seat ring with a suitable mandrel.
10 Machine valve seats. Refinish