TM 9-3431-254-14&P
5. Make certain that all air passages and cooling fins
INDOOR INSTALLATION (Continued)
are free from foreign matter. Use dean, dry compressed
air to blow dirt and dust out of cooling passages and
Place unit so that exhaust fumes are carried out of the
control cabinet, 25 psi (172 kPa) maximum pressure.
building using the shortest exhaust pipe extensions pos-
sible and one with the fewest possible number of bends.
6. The storage battery is shipped dry charge from the
Exhaust back pressure can seriously affect engine
factory. Proper steps to install electrolyte must be taken
efficiency. Minimum inside diameter of exhaust exten-
before use.
sion should be 2-1/8 inches (54 mm).
All exhaust connections must be gastight
7. Attach battery cables to poles of battery as indi-
cated on wiring diagram. The negative (-) pole should be
Provide at least 2 feet (610 mm) of space on all sides of
grounded to the frame of the unit in a secure manner.
unit for ventilation and servicing.
PORTABLE INSTALLATION
All exhaust connections must be gastight.
Provide at least 2 feet (610 mm) of space on all sides of
unit for ventilation and servicing.
CAUTION: A short circuit to rectifier
is created if a battery is installed with
The engine of the welding machine must be placed at the
tongue end of the portable mounting for proper balance.
polarity reversed. Current can flow
If leads, etc., are to be stored on the unit. they must be
from positive terminal of battery
forward of the axle to maintain proper balance of load-
through negative and positive rectifiers
ing on the tongue end of the unit.
and into heat sink. From heat sink a
completed circuit exists back to neg-
NOTE: The unit should be operated
ative battery terminal. Full battery
voltage will be impressed on rectifiers,
in as near a normal horizontal posi-
tion as possible and never at a tilt
current will damage rectifiers and/or
greater than 15 from horizontal.
wiring harness. See Engine Diagram for
INITIAL PREPARATION FOR USE
correct battery connection.
1. Open canopy doors on sides of the generator com-
8. Pump gasoline into fuel tank using care not to spill
fuel on canopy or engine. Be sure air vent on fuel tank
partment. Latch the doors in the open position by use
of the safety latches provided.
is open. Observe SAFETY WARNINGS when filling
fuel tank.
2. Inspect unit thoroughly to be sure it is in proper
working order. Check all fuel and wire connections to
9. Check to be certain that there are no obstructions
be certain they are secure. Tighten any loose screws.
in any rotating parts.
nuts, or bolts. Check closely for any damage which may
have occurred in transit.
10. Check to be certain that none of the oil connections
on the engine show leaks.
3. Remove all special tags from the machine, read care-
fully and follow any special directions they may carry.
NOTE: There is only one point of
Keeps tags with manual for future reference.
lubrication on this generator. DO
4. Check that oil pan drain plug is closed. Fill engine
at this time. See MAINTENANCE
with the correct type of oil as specified in the engine
manual.
generator bearing.