Special tools and workshop equipment required |
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| Valve seat refacing tool |
Note! t
| When repairing engines with leaking valves, it is not sufficient to rework or renew valve seats and valves. It is also necessary to check the valve guides for wear, This is especially important on high mileage engines → Chapter. |
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| The valve seats should only be reworked just sufficiently to produce a perfect seating pattern. The maximum permissible reworking dimension must be calculated before reworking commences. If the reworking dimension is exceeded, the function of the hydraulic bucket tappets can no longer be guaranteed and the cylinder head should be renewed. |
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| Insert valve and press firmly against seat. |
Note! If the valve is to be replaced as part of a repair, use a new valve for the calculation. |
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