TM 55-1520-240-23-7
9-140.5
TEST THRUST CONTROL GRIP
(Continued)
9-140.5
1.
Test five switches (1, 2, 3, 4, and 5) of thrust
control grip (6). Set meter (7) to RX1 and
connect meter to pins of connector (8) listed
below. Check meter indication.
2.
Connect meter (7) between pin A and shaft
(9). Check meter indication. There shall be no
indication.
3.
Repeat step 2 for pins B, C, D, E, F, G, H, J, K,
X, W, L, M, V, and N.
SWITCH
SWITCH
POSITION
CONNECTOR PINS
METER INDICATION
ENGINE BEEP TRIM NO. 1 (1)
RPM INCREASE
A and C
0 ohm
RPM DECREASE
B and C
0 ohm
Center
A and C then B and C
Inf
ENGINE BEEP TRIM NO. 2 (2)
RPM INCREASE
F and D
0 ohm
RPM DECREASE
F and E
0 ohm
SEARCH LIGHT (3)
EXTEND
X and H
0 ohm
RETRACT
X and K
0 ohm
L
X and J
0 ohm
R
X and G
0 ohm
Center
X and G, then X and H, then X
and J, then X and K
Inf
SLT-FIL (4)
ON
L and W
0 ohm
OFF
L and W
Inf
THRUST CONT BRAKE
TRIGGER (5)
Released
M and N
0 ohm
Released
N and V
Inf
Pressed
N and V
0 ohm
Pressed
N and M
Inf
INSPECT
9-562
