Let the machine run with the same speed as under (1), the
material should not move backward with the same very slow,
almost imperceptible motion as under test 1.
If the conditions put forward under the first and second part of
the above test, are not met, correct them in the following way:
Loosen the nut "A" (see Fig. 86), using wrench No. 20-6.
Turn the counter-nut " B ", either clockwise or counter-clockwise,
until the desired adjustment is obtained. Usually, very little move
ment of the nut is required.
Fig. 88
The two adjustments of nut " A " and counter-nut " B " are made
at the same time, using two wrenches No. 20-6 (Fig.
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