Jacking Arrangement - Piper Navajo Chieftain PA-31-350 Service Manual

1130
REFER TO NOTE
NOTE
ENSURE SUFFICIENT BALLAST ON TAIL SUPPORT
TO OFFSET WEIGHT OF AIRCRAFT
Figure 2-5. Jacking Arrangement
NOTE
If normal operation requires movement between any of the
components being clamped together, tighten the nut (or bolt)
without regard to the nut torque chart, to insure intended operation
of the assembly.
b.
Bolt and nut threads should be clean and dry unless otherwise specified. If the threads are to be
lubricated and no torque is specified, reduce the recommended nut torque (plus the friction drag torque) by
50%.
c. For thread sizes 10 through 7/16, add the friction drag torque for all self-locking fasteners specified in
the friction drag torque table. For non self-locking fasteners, assume the friction drag torque to be zero.
d.
For other bolt sizes, determine the friction drag torque by turning the nut to near contact with the
bearing surface. Attach a scale type torque wrench to the nut and determine the torque required to turn the nut
on the bolt (before the nut makes contact with the bearing surface). Add this friction drag torque to the
specified torque to get the final torque.
NOTE
If the bolt is stationary and the nut is torqued, use the lower side of
the torque range. If the nut is stationary and the bolt is torqued, use
the higher side of the torque range.
Revised: 10/15/82
HANDLING AND SERVICING
NAVAJO CHIEFTAIN SERVICE MANUAL
1B13