TM 55-1520-240-23-9
11-133
ADJUST THRUST BALANCE SPRING (Continued)
11-133
4.
Mount scale (2) downward on tube (5) of control
(1). Use strap (E376).
5.
Repeat step 1.
6.
Position scale (2) at 0 pounds. Align scale with
shaft (4) of control (1). Pull scale down and
measure force to move shaft. Record force.
Remove scale.
INSPECT
7.
Check measured force from steps 3 and 6.
Forces must not differ by more than 1.5 pounds.
If forces differ by more the 1.5 pounds perform
steps 8 and 9. If forces do not differ more than
1.5 pounds, go to Follow-On Maintenance.
8.
Remove cotter pin (6), washer (7), and pin (8)
from bracket (9). Move strap (10) up one hole to
increase force of step 1. Move strap (10) down
one hole to decrease force of step 3.
9.
Repeat steps 1 thru 7.
INSPECT
FOLLOW-ON MAINTENANCE:
Close thrust brake circuit breaker (TM
55-1520-240-T).
Perform operational check of flight control system
(TM 55-1520-240-T).
Install closet backup panel (Task 2-2).
Install closet acoustic blanket (Task 2-108).
END OF TASK
11-592
Change 1
