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SGF SEAT GRINDER
DRESSING OR TRUING THE VALVE SEAT WHEEL
It is necessary to true or dress seat wheels that have become dull or loaded, or have lost their
form (angle). To obtain the best possible dress, observe the following.
1. Feed the diamond into the wheel very slowly until the diamond just touches the wheel.
2. Move the diamond across the face of the wheel beginning from the bottom and sweep up.
A slow sweep will provide a smoother finish while a rapid sweep will provide a coarse finish.
NOTE: How the wheel is dressed will directly influence the finish of the valve seat. Take care
when dressing the seat wheels, this will improve valve seat finish and increase diamond life.
Check the dress of the wheel frequently during the seat grinding operation. It is better to dress
frequently and remove a slight amount of wheel than to wait too long and have a necessity to
remove an excessive amount to correct the wheel
Changing a valve seat stone angle is only advised if it is to increase the stone angle, i.e., taking
a 15-degree angle wheel and making it a 30-degree.
It is not cost effective to attempt to reduce an angle, too much abrasive and diamond is required
to perform this operation.
KW Products Inc. 800-553-5953
7.
500 57
th
Street, Marion, IA 52302 USA
Copyright 2004 All Rights Reserved
Equipment specifications, options and accessories subject to change without