Weighing Arrangement; Ground Handling; Jacking - Piper Navajo Chieftain PA-31-350 Service Manual

NAVAJO CHIEFTAIN SERVICE MANUAL
1131
TO NOTE
NOTE
BLOCK WHEELS TO ENSURE AIRCRAFT DOES
NOT ROLL OFF SCALES
Figure 2-6. Weighing Arrangement
e. When torquing castellated nuts, begin with minimum torque plus friction drag torque. but do not
exceed maximum torque plus friction drag torque when trying to align slot on nut with the hole in the bolt
shank. If they do not align, change washers and try again. When using castellated nuts on movable joints. do
not torque as described above. Tighten nuts only to remove looseness in the joint and then install the cotter pin.
f. Unless otherwise specified, when parts are used on Lycoming engines, using Piper furnished or
existing Lycoming threaded fasteners, use the torques specified in the latest applicable Lycoming
specifications.
g. After the final torque has been applied, the nut (or bolts or screw if no nut is used) should be
permanently marked red and should not be further tightened or disturbed.
2-10. GROUND HANDLING.
2-11. INTRODUCTION
TO GROUND HANDLING.
Ground handling covers all essential information
governing the handling of the airplane while on the ground. This includesjacking, weighing, leveling, mooring.
parking. towing and taxiing. When the airplane is handled in the manner described in the following
paragraphs. damage to the airplane and its equipment will be prevented.
2-12. JACKING. The airplane is provided with a jacking pad on each main spar just outboard of the engine
nacelle and a support position by making use of the tail skid. (Refer to Figure 2-5.) To jack the airplane.
proceed as follows:
a. Place the jacks under the jack pads.
b.
Attach the tail support to the tail skid. Place approximately 500 pounds of ballast on the support
to hold the tail down.
Revised: 10/15/82
HANDLING AND SERVICING
1B14