Operations and Maintenance Manual Mechanical Maintenance Procedures
Version 1.2 - June 2004 11 - 131
c. Using an adjustable torque wrench with a 5/16-in. hex key fitting, tighten
the ¼-20 UNC bolts in a star-shaped torque pattern to 40 inch-pounds.
(This is approximately one-half of the final torque value.)
d. Repeat the previous step, this time sequentially tightening the ¼-20 UNC
bolts in a star torque pattern to their full torque value of 75 inch-pounds.
9. Replace the probe and horizontal bracket:
a. Replace the probe cord and vacuum line and their cover on the probe
stand.
b. Replace the bracket and probe, rotating the three 3/8-16 n-c bolts
clockwise to firm.
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