TM 55-4920-328-13
Table 5-2. Alarm System Verification by Shorting Pins
Data Acquisition Box
Alarm Card
(fig. FO-25)
Alarm Display on Unit 4A1
in Unit 4A2
Plug No.
Pins No.
Engine Chip Detector
J16
J7
S & Gnd
Engine Low Fuel Pressure
J19
J4
P & N
Engine Low Oil Pressure
J19
J4
L & M
Engine Low Oil Level
J18
J7
N & Gnd
Water Brake Low Oil Flow
J12
J7
AU & AV
Water Brake Low Oil Pressure
J12
J7
AU & AV
Water Brake Bearing H20 Flow
J11
J7
BH Common
BJ to BH
BK to BH
Test Trailer Power
Power Interconnect Box
Plug No.
Pins No.
Cooling Tower Low H20 Level
J11
J4
L & M
NOTE: The EGT overtemp alarms and the N1 and N2 overspeed alarms, must be setup by using signal simulation in
accordance with the calibration procedure, TB 55-4920-328-50.
NOTE
Tables 5-2 and 5-3 provide the
nomenclature of the alarm and pins
to be shorted for system verification.
c. Simultaneously depress the TIMER START
switchlight unit (35, figure 1-24) and start a stop watch.
d. After approximately one minute, simultaneously
depress the TIMER START switchlight unit (35) and
stop the stop watch. Verify that the elapsed time
indicator (37) and stop watch agree.
e. Depress and hold the TIMER RESET switchlight
unit (36) until the elapsed time indicator (37) resets to
000.0.
f. After checkout of the warning and timing circuits,
deenergize the electrical system as outlined in chapter
2.
5-17. Checkout and Adjustment of Oil Quantity
Electron Unit 2A10.
When the oil quantity system is suspected to be out of
tolerance, check and adjust the oil quantity electronic
unit (32, figure 1-23) as follows:
NOTE
The
following
procedures
are
applicable only when Specification
MIL-L-23699
lubricating
oil
is
contained in the test trailer oil
system.
5-8
