TM 5-3431-200-15
31. Quarterly Preventive Maintenance
Procedure
Services
Cleanliness. Inpect the entire welding
set for dirt. Clean dirty surfaces
with an approved solvent, dry
GENERAL
thoroughly. Inspect the gas ports
in the gun barrel and remove all
obstructions (par. 62).
Publications. Make sure that a copy
SERVICES.
BEFORE-OPERATION
of this manual and DA Form 285
Inspect the welding set and perform
are on, or with the welding set and
the services listed in daily before-
are in serviceable condition.
operation services (par. 29).
TOOLS AND EQUIPMENT. Inspect
Unusual operation and noises. Investi-
the condition of the tools assigned to
gate abnormal operation; erratic
the welding set. Inspect the condition
wire feed, unusual motor noise,
of the canvas case.
smoking, and failure to respond to
Be sure tools assigned to the welding
controls. Shut off the welding set
set are clean, serviceable, and prop-
if irregularities are noticed and
erly stowed. Be sure the canvas case
correct the condition. If the condi-
closes and fastens properly.
tion is beyond the scope of the
PUBLICATIONS. Be sure a copy of
operator, report the condition to
this manual, TM 5-3431-200-15, TM
organizational maintenance.
5-3431-200-25P, and DA Form 285
Tools. Inspect the tools and equipment
are on or with the welding set and
assigned to the welding set; be sure
are in serviceable condition.
they are in good condition, clean and
Inspect the general
APPEARANCE.
properly stowed.
appearance of the welding set (figs.
Protection.
Protect the welding set
identification
dirt,
illegibility of
from
tampering,
damage,
and
markings, and the condition of the
misuse. Do not use the control as-
paint.
sembly for a step or a seat, Keep
Correct deficiencies or report them
cables and hose free from kinks
to field maintenance.
and sharp bends. Cover the welding
MODIFICATION.
Be sure that all
set when it is not in use. If not
available modification work orders
used for a prolonged period of time,
applying to the welding set have been
coat unpainted metal parts with an
completed and recorded on DA Form
approved rust inhibitor.
478, DA Form 5-73, and DA 5-73a
as applicable.
CONTROL ASSEMBLY
30. Organizational Maintenance
GAS HOSE ASSEMBLIES. Inspect the
gas hose assemblies for loose or dam-
a. Preventive maintenance is performed by
aged mounting hardware, damaged
organizational maintenance personnel at quar-
ferrules, cracked or broken hose and
terly intervals. A quarterly interval is equiv-
stripped nipples.
alent to 3 calendar months, or 250 hours of
Tighten loose mounting hardware.
operation, whichever occurs first.
Replace hose assemblies having de-
fective parts (par. 49).
b. The preventive maintenance services to be
SOLENOID VALVE AND GAS PIPE.
performed at quarterly intervals are listed con-
Inspect the solenoid valve and gas
pipe for loose or missing mounting
secutively (starting with No. 1) and are de-
hardware, loose electrical connections,
scribed in paragraph 34. The service refers to
and defects.
a preventive maintenance services "Title" on
Tighten loose hardware and connec-
DA Form 464 and indicates the services to be
tions; replace missing hardware;
performed. The number listed under "Inspec-
straighten a bent pipe; test the sole-
noid valve (par. 49), and replace a
tion" indicates the minimum inspection require-
defective solenoid valve and pipe (par.
ments for the equipment.
49) .
16
