ARMY TM 5-6115-633-14&P
(2) Dual generator set operation. Use the switch box to alternately operate both generator sets 
as follows:
(a) Make sure power and ground cables are connected to switch box and both generator
sets.
(b) Select first generator set to be 
used and bring it 
into operation in 
accordance with 
(c) Turn second generator set on 
and bring it up to 
rated speed, voltage and frequency. 
(Refer to  TM 5-6115-585-12.) Close circuit breaker (move to ON position).
(d) Move switch box rotary switch to 
GEN position corresponding to 
second generator set. 
(e) Open circuit breaker on 
first generator set (move to 
OFF position) and turn generator set 
off. (Refer to  TM 5-6115-585-12.)
(f) To stop operation, move rotary switch to OFF position and open circuit breaker on
generator set still running. Turn generator set off. (Refer to  TM 5-6115-585-12.)
c. Trailer Operating Procedures. Refer to TM 9-2330-213-14&P for specific operating
procedures for the M103A3 trailer.
Section Il. OPERATION OF AUXILIARY EQUIPMENT
2-2. Operation of Auxiliary Equipment. There is no auxiliary equipment supplied with the power plant.
Section Ill. OPERATION UNDER UNUSUAL CONDITIONS
2-3. Operation Under Unusual Conditions. When operating the power plant under unusual conditions
such as extremes in temperature or difficult terrain, there are steps that must be taken to protect the
equipment.
a. Refer to  TM 5-6115-585-12 for special procedures when operating the generator sets under
unusual conditions.
b. Refer to TM 9-2330-213-14&P for special procedures when operating the trailer under unusual
conditions.
2-2