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TM 9-2320-356-BD
Section IV.
WELDING EXPEDIENTS
B-4.
CONTROLLED AMPERAGE
General Information:
Battlefield repairs requiring welding can be performed by using the auxiliary
generator (Little Joe) from the M88 or generator recovery vehicle if a regular
welder is not available.
Limitations:
o Possible degraded armor protection
Personnel/Time Required:
o 2-soldier
o 1-2 hours
Materials/Tools:
o Auxiliary generator (24 V dc)
o Control unit from a welder or
similar control
o Welders helmet and gloves
o Welding rod, coat hangers, or
barbed wire
o Heavy-gage cable (2.0 gage
or larger)
o Vise grips or clamps
o Fuel line
Other Options:
o Use uncontrolled amperage.
o Weld using vehicle battery power.
Procedural Steps:
1.
Remove auxiliary generator from M88 recovery vehicle and place close to area to
be welded.
Connect heavy-gage cables to (+) and (-) output posts. Also connect
control unit to (+) and (-) output posts.
Tighten terminal securely.
2.
Connect negative (-) cable to tank hull with clamp close to area to be welded.
Connect welding rod to positive (+) cable with vise grips. Insulate vise grips
with gloves, rags, or several layers of dry paper.
WARNING
Use welder’s helmet to protect eyes and face
from arc.
Do not touch exposed cable or vise
grips with bare hands; metal gets very hot. Do
not perform this task in rain or on wet ground
because of electrical shock hazard.
3.
Start auxiliary generator, strike arc, and weld.
Set control unit for amperage
level required by the thickness of
4.
Record the BDAR action taken.
practicable, repair using standard
B-8
the metal.
When the mission is completed, as soon as
maintenance procedures.
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