Detroit Diesel 4000 Series, Service Manual, Page: 45 / 2706

SERIES 4000 12/16V SERVICE MANUAL
Angle of rotation tightening—
The additional angles of rotation specified in the tightening specifications must be achieved and
may be exceeded within the specified tolerance.
If no tightening tolerance is specified, the following tolerances must be observed:
+ 5 degrees for angle of further rotation less than or equal to 90 degrees.
+ 10 degrees for angle of further rotation greater than 90 degrees.
Before angle-of-rotation tightening, each bolt head must be color-marked so that after tightening
it is possible to check that the angle of rotation is correct. (Exception: color-marking is not
necessary in the case of a self-monitoring, numerically controlled, NC screwdriver.)
3
Elongation tightening— Tightening must be carried out in accordance with tightening
specifications taking the tightening tolerance into consideration.
3
Always mark each fastener upon completion of the torquing process to ensure torque is
applied to all and none of the fasteners were missed.
All information subject to change without notice.
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