Piper Comanche PA-24 Service Manual page 67

C. Gap Conditions Between Parts Attached with Threaded Fasteners.
If a gap condition exists between mating parts where a threaded fastener is to be installed, install
fasteners and associated hardware per subject chapter/section or to buildup noted during removal.
Then, torque to a value 10% of the final torque required plus the friction drag torque.
For example, if Table II-IIA, Sheet 2, torque is 190 in.-lbs. and the friction drag torque of the nut is
80 in.-lbs. (i.e. - Table II-IIA, Sheet 2, torque minus Table II-IIA, Sheet 1, torque), torque to a value
of:
Maximum Permissible
Gap Closing Torque
Example:
NOTE: If the Table II-IIA, Sheet 1, torque requirement exceeds the final torque specified in the
subject chapter or section (if any), use the torque specified in the subject chapter or section
to calculate the maximum permissible gap closing torque.
Accomplish this for all fasteners common to the gapped interface. If no gap exists after
accomplishing the above, finish torquing to final torque. If a gap remains consult your Piper
Dealer's Service Advisor (DSA) for further assistance.
D. After the final torque, apply a slippage mark to the nut or bolt or screw head as applicable.
NOTE: For more details on torquing, refer to FAA AC 43.13-1, latest revision.
04/01/09
PIPER COMANCHE SERVICE MANUAL
= (Table II-IIA, Sheet 1, torque x .10) + (Sheet 2 - Sheet 1) torque
3/8-24 (190 x .10) + (270-190) = 19 + 80 = 99 in.-lbs.
II - HANDLING AND SERVICING
1B21