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b. A ve minute run in which there is a moderate amount of torque
meter deection and the wear surface is moderate, and may either be
polished or dull, depending upon the abrasiveness of the test uid.
13. After removing and cleaning the test block, examine the test block for
wear. With the aid of a magnifying glass (#111-11), observe the scar left
on the block by the test ring.
If the scar is rectangular, the test block is properly aligned in the holder.
Your test is complete. If the scar is triangular or trapezoidal, the alignment
is off and must be corrected. Refer to the “Block Positioning” section on
page 22 for instructions.
Improperly Positioned Test Block
(Note: Two tests may be performed
on each face)
Properly Positioned Test Block
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