ARMY TM 9-6115-641-24
AIR FORCE TO 35C2-3-456-12
Table 2-10. Diagnostic Connector Connection Points
NOTE
The Diagnostic Connector can be a useful troubleshooting tool. Refer to Figure 2-13 for
pin positions.
PIN
DESCRIPTION
EXPECTED OUTPUT*
B
AC chassis ground (GND)
Continuity 0 Volts (*)
D
DC ground
Continuity 0 Volts (‘)
F
DC exciter field voltage (positive)
0-45 VDC (4)
J
DC exciter field voltage (negative)
0-45 VDC (5)
K
DC voltage across engine fuel solenoid coil
24 VDC (1)
N
DC starter motor solenoid coil
24 VDC (2) or (6)
0
DC voltage across auxiliary fuel pump
24 VDC (3)
P
DC voltage S1 Terminal 7
24 VDC (6)
R
DC voltage S1 Terminal 3
24 VDC (1), (3), (6)
T
DC voltage across starter crank relay coil
24 VDC (2)
U
DC voltage (output to DC circuit breaker)
24 VDC
V
DC voltage across output circuit interrupter coil
24 VDC
X
DC starter motor (motor side of solenoid contacts)
24 VDC (2)
Z
DC voltage across fuel level contacts
24 VDC (1)
a
DC voltage across low oil pressure switch
O VDC
b
DC voltage across low oil pressure switch
O VDC
d
DC battery charging voltage (input to DC circuit breaker)
0-27.6 VDC
* With Generator Set Operating (Refers to all not numbered)
(1)
Place MASTER SWlTCH in PRIME/RUN position.
(2)
Place DEAD CRANK switch in CRANK position.
(3)
Place MASTER SWITCH in PRIME/RUN AUX. FUEL position.
(4)
Read between Pin F and J.
(5)
Read between Pin J and F.
(6) During engine starting.
(7) Auxiliary fuel pump in operation (note fuel level must be low), master switch in
PRIME&RUN position.
2-37. CONTROL PANEL LIGHTS.
2-37-1. Inspection.
a.
Shut down generator set.
b.
Release control panel by turning two fasteners and lower control panel slowly.
c.
Inspect control panel lights for cracks, stripped threads, corrosion, and other damage
d.
Raise and secure control panel.
2-66 Change 2
