TM 3-4240-241-12
opposite the number must be performed at the
make sure that all required maintenance is accomplish-
prescribed interval. Weekly services must be per-
ed. If corrective action is not authorized at organization-
formed weekly or after 60 hours of operation; monthly
al level, report equipment faults to direct support main-
services, monthly or after 240 hours of operation,
tenance personnel.
whichever occurs first. The number also indicates the
b. Explanation of Columns. A number under the
sequence in which the service must be performed and is
weekly or monthly heading in the "Interval and
the "TM Item No." referred to on DA Form 2404 (TM 38-
Sequence No." column indicates that the service
750).
Preventive Maintenance Checks and Services
Organizational Weekly and Monthly Schedule
Interval and
sequence No.
Paragraph
Wk. Mo.
Item to be inspected
Procedure
reference
1 .........
Air inlet and outlet
Check fabric for wearing, chafing, tears, and punctures
.........
groups.
Check connections for airtightness.
2 .........
Gas can adapter and
Check gas can and adapter and connections for leaks. Check
.........
gasket.
that the air vent of gas can adapter is open, adapter clean
.........
and tight fitting and gasket undamaged.
3 .........
Mountings................... See that engine or motor is securely mounted to canister
4 .........
Exhaust hose assembly Inspect cylinder exhaust hose assembly for leaks, loose
.........
and gaskets.
mounting bolts and nuts, and defective gaskets.
5 .........
Blower output
Check air delivery of blower assembly. Check vanes for
.........
chipped blades. Report defects to general support
.........
maintenance personnel.
6 .........
Canister ...................... If airflow from canister is improper, see paragraph on
.........
adjustment.
7
Engine ........................ Perform all organizational preventive maintenance services ......
TM 52805
20614,
8
Tests ..........................
Operate the unit for 1 or 2 minutes each month, or after any
change of location. Inspect both the CBR protective
shelter and filter unit for condition.
9
Notifications................
See whether all modification work orders applying to the
equipment have been completed and recorded on DA Form
24085.
10
Electric motor .............
Check electrical motor for operation. Check cord and plug
for fraying and chipping.
Section V. TROUBLESHOOTING
61. General
62. Gasoline Engine Fails to Start
Probable cause
Possible Remedy
This section contains information useful for locating
Lack of fuel .......................... Fill
five gallon engine
and correcting malfunctions which may develop in the
supply can with fuel.
ABC-M6A1 filter unit. Each malfunction is followed by a
Carburetor flooded ............... Adjust choke and crank
description of probable causes and possible remedies.
engine.
Remedies which must be applied by higher level
Water or dirt in fuel ............ Clean fuel line. Gasoline
maintenance personnel include a note to this effect.
system. .............................
can adapter and fuel
See engine manual TM 5-2805-206-14 for detailed
filter. Drain fuel from
engine troubleshooting.
supply can and refill
31