Westerbeke 6.5 SBCG-60HZ Service Manual page 78

ANGULAR NUT AND BOLT TIGHTENING METHOD
1.
Carefully wash the nuts and bolts to remove all oil and
grease.
2. Apply a coat of molybdenum disulfide grease to the
threads and setting faces of the nuts and bolts.
3. Tighten the nuts and bolts to the specified torque (snug
torque) with a torque wrench.
CENTER liNE
4.
Draw a line (A-B) across tl1e center of each bolt.
5. Draw another line (C-D) on tlle face of each of tlle parts
to be clamped. This line should be an extension of tl1e
line (A-B).
G
66
6. Draw another line (F-G) on the face of each of tl1e parts
to be clamped. This line will be in the direction of the
specified angle
(Q)
across the center.
(E)
of the nut or
bolt.
7. Use a socket wrench to tighten each nut or bolt to tl1e
point where the line (A-B) is aligned with the line (F-G).
Example: Specified Angle and Tightening Rotation
A 30° 1/12 of a tum
B
60°
1/6 of a tum
c
90°
1/4
of a turn
D
180°
1/2 of a tum
E 360° One full tum