TM 3-4240-241-12
Section IV. ORGANIZATIONAL PREVENTIVE MAINTENANCE SERVICES
Check fabric for wearing, chafing, tears, and punctures..
57. General
Check connections for airtightness.
The instructions in this section apply to the
f.
Exhaust Hose Assembly and Gaskets.
organizational maintenance personnel responsible for
Inspect exhaust system for leaks, loose mounting bolts
maintaining the ABC-M6A1 filter unit. The purpose of
and nuts, and defective gaskets. Replace defective
preventive maintenance services is to detect the first
gaskets.
signs of failure of assemblies in the equipment and to
g. Mounting. See that engine or motor is securely
ensure that appropriate corrective action is taken before
mounted to canister.
expensive and time-consuming repairs or replacements
are required. Correct deficiencies or shortcomings as
h. Gas Can Adapter and Lines. Inspect gas can
described in paragraphs 58 and 59. Report and request
adapter. Check fuel lines and connections for leaks.
maintenance from direct support maintenance on all
See that gas can adapter is securely mounted, and the
services beyond the scope of organizational
air vent of gas can adapter is open, adapter clean and
maintenance.
Use DA Form 2407 for reporting
tight fitting. Check that gasket is undamaged. Replace
deficiencies.
damaged gasket (par. 87). Upon reassembly of gas
lines, use sealing compound at all line joints (MIL-S-
58. Weekly Services
45180).
a. Tools. The special tools required to perform the
i. Fuel. See that sufficient fuel is on hand and
repair operations on the Military Standard gasoline
properly stowed for immediate use.
engine are listed and described in TM 5-2805-206-14,
59. Monthly Services
paragraph 15. The tools consist of one cylinder head nut
torque wrench adapter, part no. B11479-1 and one
a. Publications. See that copies of TM 3-4240-
adapter FSN 5120-240-8702. The tools are components
241-12, TM 3-4240-241-20P, TM 5-2805-206-14, TM 5-
of TOE sets. One each tool is authorized per using units
2805-206-24P, and LO 5-2805-206-14 are with the
(TM 5-2805-206-24P). Check to see that these tools are
equipment and in serviceable condition. Report any
available and on hand to use with the maintenance of the
missing publications.
engine.
b. Modifications. See whether all modification
b. Appearance. Inspect general appearance of
work orders applying to the equipment have been
unit for cleanliness and paint. If filter unit is dirty, wash
completed and recorded on DA Form 2408-5.
exterior metal surfaces with dry-cleaning solvent and dry
c. Appearance. Inspect general appearance of
with compressed air if available. If painting is required,
the filter unit for cleanliness and condition of unit.
report condition to direct support maintenance personnel.
d. Fuel. Check that a sufficient amount of fuel is
c. Canister Assembly. Inspect all edges for tight
supplied and on hand for use, operation, and test.
closure. Check for holes, evidence of moisture leakage,
e. Engine. See TM 5-2805-206-14 for engine
and for chafing or obstruction in air inlet and outlet. If
maintenance instructions.
airflow in canister is improper, follow instructions in
f. Electric Motor. Check electric motor for
operation. Check cord for fraying. Check plug for
d. Blower Assembly. Check air delivery of
cracks, breaks and chipping.
blower. Be sure that there are no obstructions in blower
g. Tests. Operate the filter unit for 1 or 2 minutes
air inlet or outlet. Check vanes for chipped blades. Turn
each month, or after any change of location. Inspect both
vanes through full arc of motion. Be sure that there are
the CBR protective shelter and filter unit for general
no obstructions to free movement and that the fan is
condition.
securely attached to the engine or motor output shaft.
60. Preventive Maintenance Checks and Services
Be sure that screen is intact and is-securely fixed to
a. Purpose. The preventive maintenance checks
blower air outlet (inside operation). Replace any missing
and services provide organizational maintenance
bolts, nuts, or screws.
personnel with a list of maintenance services which must
e. Air Inlet and Outlet Hose Assemblies.
be performed at the intervals prescribed. Use the list to
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