
BOLT TIGHTENING SEQUENCE (Fig. 13)
The following is a recommended bolt tightening
sequence:
Step 1 — Tighten moderately (without torquing) all
the flange bolts in the sequence shown.
Step 2 — Tighten moderately (without torquing) the
hex nuts on the center studs (no specified sequence).
Step 3 — Repeat Step 1, tightening the bolts to the
specified torque.
Step 4 — Repeat Step 2, tightening the nuts to
the specified torque.
Step 5 — Not less than one hour later, retighten the
center stud nuts to the specified torque.
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Fig. 13 — Bolt Tightening Sequence
13
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