Revision: 2
Date: 11-15-19
VASHON AIRCRAFT RANGER R7 MAINTENANCE MANUAL
5.2-9
When nuts are to be secured to fasteners by means of cotter pins or lock wire, the low
side of the specified torque range shall be approached for tightening. If necessary,
tightening shall be continued until the next slot aligns with the hole.
Nuts shall not be loosened to obtain the required alignment.
Maximum torque shall not be exceeded.
Threaded fasteners which have been torqued above the maximum value specified shall
not be backed off and re-torqued but shall be removed, rejected and rendered
unserviceable.
If there is any doubt a fastener has been under-torqued, the nut shall be backed off one
complete rotation (360°) maximum and retightened to the specified value; the bolt,
screw or stud must not be allowed to rotate.
8.3
Use of Torque Wrenches and Adaptors
All final torquing shall be carried out with certified torque wrenches or torque
screwdrivers.
When adaptors or extensions are used on manually operated torque wrenches, they shall
be used as shown in Figure 5.2.2 and the dial reading required shall be calculated from
the following formula:
𝐷𝑖𝑎𝑙 𝑅𝑒𝑎𝑑𝑖𝑛𝑔 =
𝑆𝑝𝑒𝑐𝑖𝑓𝑖𝑒𝑑 𝑇𝑜𝑟𝑞𝑢𝑒 × 𝐿
𝐿 + 𝐴
Figure 5.2.1.1.1.1 Torque wrench with extension.
