30 minutes x 1 unit = 15 units
13.
Protective Life of Gas Filters
3
The unit commander will insure that the filter unit
operator records the duration of each chemical attack
14.
Starting
and the type of agent used. With this record, the
a. Before-Operating Service. Perform the before-
protective life of M10 gas filters can be computed using
the information contained in table I. The operator will
operation services (par. 27) before starting the gasoline
notify organizational maintenance personnel that the gas
engine.
b. Starting the Engine.
filters shall be replaced when 100 replacement units
have been used.
(1) Check that the gasoline can adapter is
Table I. Gas Filter Replacement Units
connected to a 5-gallon gasoline can filled
with fuel.
Type of attack
Duration
Ground
All blister
CX and all other
(2) Completely close carburetor air choke
agents
control lever (2, fig. 12) by turning the lever
of attack
delivered
except CX and
CK
agents including
counterclockwise.
(minutes)
nerve
air-delivered
(units
unidentified
(3) With the knot in the starting rope assembly,
agents
(units used)
wind starter rope clockwise around starter
2
1
10
6
4
1
2
20
12
rope flange (5, fig. 7). Pull rope with a quick,
6
1 1/2
3
30
18
full stroke to spin the flywheel, which primes
8
2
4
40
24
the engine.
If necessary, repeat with
10
2 1/2
5
50
30
carburetor air choke control lever opened
12
3
6
60
36
slightly.
14
3 1/2
7
70
42
(4) After engine has been primed, open
16
4
8
80
48
carburetor air choke about halfway and start
18
4 1/2
9
90
54
engine by using the starter rope. As the
**20
5
10
100
60
engine warms up, gradually open choke until
it is wide open.
*An attack lasting less than two minutes is
(5) Adjust the control choke lever to a position
considered to have a duration of 2 minutes. An Attack
between wide open and closed depending
lasting longer than 2 minutes but less than 4 minutes is
upon the temperature.
considered to have a duration of 4 minutes. Similar
Note. Choke requirements increase as
consideration is given to attacks of up to 20 minutes.
**To calculate the number of units used in an attack
the temperature decreases. Adjust as
longer than 20 minutes, the following formula may be
necessary.
used: Multiply the duration (number of minutes) by the
number of units shown on line 1 of the appropriate attack
15.
Stopping
column and divide by 2. For example, a filter exposed to
Press engine stop switch (1, fig. 11) mounted on
a 30 minute air delivered nerve agent attack would use
engine accessory case. Hold in until engine stops firing.
15 replacement units as follows:
Section III. OPERATION OF MATERIAL USED IN CONJUNCTION WTH MAJOR ITEMS
b. Description. The gasoline can is a standard
16.
Gasoline Can
military 5-gallon gasoline can. The gasoline can (FSN
7240-222-3088) must hi requisitioned for use with the
a. Purpose. The standard military 5-gallon gasoline
filter unit.
can (7, fig. 7) is used in conjunction with the gasoline can
adapter (8, fig. 7). Gasoline from the gasoline can is
supplied to the engine carburetor through the gasoline
can adapter.
14
