TM 55-1520-240-23-9
11-280
AFCS INTERFACE TEST
(Continued)
11-280
TEST 7
DASH ACTUATOR OUTPUT MOTION TEST (BOTH)
NOTE
Upper DASH actuator is part of No. 1
AFCS. Lower actuator is part of No.
2 AFCS.
31.
Set AFCS SYSTEM SEL switch (1) to 1 or 2.
(System under test.)
32.
Set AFCS line test set switches as follows:
a.
METER SOURCE switch (3) to ACTUATOR
DRIVE.
b.
ACTUATOR DRIVE DASH switch (14) to OFF.
c.
FEEDBACK MONITOR switch (15) to DASH.
33.
Set ACTUATOR DRIVE DASH switch (14) to EXT.
Read digital display (6). Reading shall be +3.64
to +5.40 VDC. Observe actuator (16) extends.
34.
Set ACTUATOR DRIVE DASH switch (14) to
RETR. Read digital display (6). Reading shall
be -6.86 to -7.00 VDC. Observe actuator (16)
retracts.
34.1.
Set ACTUATOR DRIVE DASH switch (14) to
EXT. Measure the time required for actuator (16)
to fully extend. Time shall be 3.5 to 7.0 seconds.
34.2.
Set ACTUATOR DRIVE DASH switch (14) to
RETR. Measure the time required for actuator
(16) to fully retract. Time shall be 3.5 to 7.0
seconds.
34.3.
Set ACTUATOR DRIVE DASH switch (14) to
EXT. Extend actuator (16) about halfway.
35.
Aft actuator operates with No. 2 AFCS. To test
No. 2 AFCS, perform steps 37 thru 39 and steps
42 thru 43.
END DASH ACTUATOR OUTPUT MOTION TEST
(BOTH)
11-1179
