MAINTENANCE
87
CAUTION
Check all wheel nuts after 2 to 5 hours of operation
when new trucks are put into operation or when
wheels have been removed and installed. Tighten the
nuts in a cross pattern to the correct torque value
shown in the MAINTENANCE SCHEDULE table. When
the nuts stay tight for eight hours, the interval for
checking the torque can be extended to 150 hours.
NOTE:
Whenever a wheel is removed, it will be neces-
sary to lubricate the wheel nuts and studs. (See
FIGURE 30.) Put two drops of engine oil (or other lubri-
cant) between the flange and body of the wheel nut. Also
put two drops of oil on the threads of the studs.
Operator Restraint System (See FIGURE 20.)
The seat belt, hip restraint brackets, seat and mounting
are all part of the operator restraint system. Each item
must be checked to make sure it is attached securely,
functions correctly and is in good condition.
The seat belt must latch securely. Make sure the seat belt
extends and retracts smoothly and is not damaged or
torn.
FIGURE 20. CHECK THE SEAT
1. SEAT BELT
2. HIP RESTRAINT
3. SEAT RAIL
4. SEAT BELT RETRACTOR
12478
1
2
3
4
Make sure the seat rails are not loose. The seat rails must
lock securely in position, but move freely when unlocked.
Property of American Airlines
Summary of Contents for CHALLENGER H165XL
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