Refinish

Specifications:

NOTE:




Clamp cylinder head into clamping device for disassembling and machining.
Machine valve seats with valve seat turning tool, with valve seat grinder or with valve seat cutter.


Machining Valve Seat Rings:





1 Check valve guides and replace if required. Service and Repair





2 Machine valve seats (see operating instructions of machine tool manufacturer).

CAUTION: Loosen pilot only after the runout of the valve seat has been checked (step 3).





CAUTION: Do not turn down the bead at the lower end of the valve seat.





5 Pilot
18 Dial gauge
19 Test sleeve
20 Dial gauge holder

3 Check runout of valve seat
For this purpose, slide test sleeve (19) with dial gauge holder (20) and dial gauge onto the pilot (5).





4 Measure valve seat "b" and correct at top with 15 ° and at bottom with 60 ° if required.

When machining with the Hunger turning tool, use the 60 ° correction steel No. 13 fir the lower valve seat correction.

5 Observe valve springs and valve spring preload. Testing and Inspection