TM 5-4310-335-14
NOTE
Do not pull on cable or twist braided shielding. Gently work cable from side to side
and free the rubber seal. Do not use sharp metal tools to install rubber seals.
4-11.
Interference Suppression Components
a. Spark Plugs. The integrally shielded plugs are located in the cylinder heads.
b. Spark Plug Cables. The high-tension spark plug cables are encased in a braided wire shield.
They are connected at one end to the spark plugs and at the other end to the crankshaft bearing
cover.
assembly.
4-12.
Replacement of Suppression Components
a. Spark Plugs. In order to replace spark plugs disconnect the connector nuts and using a spark
plug socket, remove the spark plugs. When installing the spark plugs torque to 25 to 27 ft. lbs.
b. Spark Plug Cables. Remove the spark plugs. Remove the screws and clamps securing the
flywheel housing cover and remove the flywheel housing cover. Remove the cover on the
flywheel housing by removing the two screws that attach the cover to the flywheel. Loosen the
connector nut and remove the spark plug cable
4-13.
Testing of Radio Interference Suppression Components
Test the capacitors for leaks and shorts on a capacitor tester; replace defective capacitors. If test
equipment is not available and interference is indicated, isolate cause by trial-and-error method of replacing
each capacitor in turn until the cause of interference is located and eliminated.
Section VI. MAINTENANCE OF FUEL TANK
4-14.
Fuel Tank
a. General. The fuel tank is located in the roof assembly and is used to store the fuel required to
operate the engine.
b. Removal. Unscrew and remove fuel cap, disconnect the fuel line at the filter and drain the fuel
into a suitable container. Remove the gasoline filter.
c. Cleaning. Clean the fuel tank with approximately one pint of gasoline, removing any loose
sediment or dirt. Rinse the fuel filter thoroughly with gasoline until clean. Air blow the filter if
necessary to eliminate foreign matter.
d. Inspection.
(1) Check the fuel tank for evidence of dirt.
(2) Check the filter to fuel tank hose for damage and secureness of fit.
e. Replacement. Replace the fuel tank.
f.
Installation.
(1) Reinstall the filter and reconnect the fuel line to the filter.
(2) Pour fuel into fuel tank until full.
(3) Replace the fuel tank cap onto the fuel tank fill port.
Section VII. MAINTENANCE OF PNEUMATIC SYSTEM ACCESSORIES
4-15.
Dehydrator Cartridge
a. General.
(1) Remove and replace the dehydrator cartridge (9, fig. 6-5) in accordance with the following
schedule:
Ambient Temperator Range ( )
F
Change Interval (Hours)
-65 (--54 ) to 0 (--18 )
C
C
4500
0 (-18 ) to 70 (21 )
C
C
200
70 (21 ) to 100 (38 )
C
C
65
100 (38 ) to 125 (52 )
C
C
25
(2) The dehydrator cartridge is located within the dehydrator housing (11, fig. 6-5). It is used to
reduce the moisture content of the compressed air to a dew point of -65 (-54 ) at 100
F
C
F
(38 ) ambient saturated inlet air conditions. Perform maintenance by proceeding as follows:
C
NOTE
The dehydrator cylinder need not be disassembled from the frame assembly for
cartridge replacement. A hole is provided in the roof assembly for access and
withdrawal of the cartridge.
b. Removal.
(1) Unscrew and remove the dehydrator cylinder cap (5) from the cylinder body.
(2) Withdraw and discard the expended
4-8
