TM 5-3431-201-10
Section V. FIELD EXPEDIENT REPAIRS
44. Engine Lacks Power
42. General
Operational troubles may occur while the
Trouble
Expedient remedy
welding machine is operating in the field where supplies
Air cleaner clogged or
Remove air cleaner
and repair parts are not available and normal corrective
defective.
element (par. 28).
action cannot be performed. When this condition exists,
the following expedient remedies may be used during
45. Winterization Heater Not Getting Fuel
emergencies, upon the decision of the unit commander.
Equipment so repaired must be removed from operation
Trouble
Expedient remedy
as soon as possible, and properly repaired before being
placed in operation.
Fuel filter clogged .............. Remove filter elements
43. Engine Not Getting Fuel
46. V-Belts Make Excessive Noise
Trouble
Expedient remedy
Trouble
Expedient remedy
Fuel strainer clogged .......... Remove fuel strainer
Fan v-belt frayed
Remove broken V-belt
element (par. 50).
or broken.
and operate with one V-
Fuel filter clogged .............. Remove fuel filter
belt until replacement
element (par. 51).
can be obtained (par.
Section VI. ENGINE ACCESSORIES
Note.
47. Radiator
If an ambient temperature of 32 F is
a. General.
The radiator should be cleaned
anticipated, see that the cooling
externally at weekly intervals by directing compressed
system is serviced with the proper
air at it to remove dirt and foreign matter from the
radiator core. The cooling system should be drained
grade and quantity of antifreeze by
and flushed at least twice a year, or before adding and
organizational maintenance.
after draining antifreeze solution.
48. V-BELTS
b. Draining, Cleaning, and Flushing.
a. Refer to figure 16 and adjust the V-belts.
(1) Operate the engine until it reaches operating
b. Perform field expedient repairs on a broken V-
temperature.
belt by removing the broken V-belt.
(2) Refer to figure 15 and drain and fill the cooling
Operate the unit with the remaining belt of the
system.
pair until a replacement can be obtained.
(3) Fill the radiator with clean, fresh water and the
Caution:
proper amount of an approved cleaning
Performance of any field expedient
compound.
repair creates a condition possibly
dangerous to the equipment or
(4) Operate the engine until the rust and scale is
removed from the cooling system. Refer to
personnel.
A welding unit so
figure 15 and drain the cooling system.
repaired should be taken out of
service as soon as possible for
(5) Repeat (3) and (4) above, substituting an
replacement of the defective parts.
approved
neutralizer
for
the
cleaning
compound.
49. Batteries
a. General. The welding machine has two 12-volt
(6) Repeat (1) and (2) above with clean water until
batteries connected in series by a jumper electrical lead.
the water that is drained from the radiator runs
The batteries are grounded to the frame by the positive
clear.
lead and are connected to the starter solenoid by a
(7) Fill the cooling system with clean water and add
negative electrical lead.
The batteries are also
an approved rust inhibitor.
connected to the battery-charging receptacle for
charging from an outside source.
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