TM 5-4310-276-14
Table 4-2. Troubleshooting (cont)
Malfunction
Test or Inspection
Corrective Action
b. Cleaning and inspection.
WARNING
Drycleaning solvent, P-D-680, used to clean parts is potentially dangerous to per-
sonnel and property. Avoid repeated and prolonged skin contact. Do not use near
open flame or excessive heat. Flash point of solvent is 100F (38C).
Wash the intercooler safety valve with cleaning solvent, item 5, App. D. Inspect for cracks in
the body of the valve. Inspect the threads for wear or damage. Replace a defective intercooler
safety valve.
NOTE
This valve is preset at 60 psi (4.2 kg/sq cm). A defective valve should be replaced rather than repaired.
c. Installation.
(1) Install the intercooler safety valve in the compressor cylinder head by turning the valve
clockwise.
(2) Recharge air system.
Step 2. Check if air receiver tank drain valve is loose.
The air tank drain valve is underneath the tank and if found to be loose, tighten it. If it is found to be de-
fective in any way, replace it.
Step 3. Check if air hoise or fittings are leaking.
Tighten any loose fittings and replace a leaking air hose.
Section
VII.
RADIO
SUPPRESSION
Replacement of Suppression
4-13. General
Components.
Radio interference suppression is attained by
a. Spark Plug. Loosen the nut on the spark
providing a low-resistance path to ground for stray
plug cable and remove the cable. Remove the spark
currents. The methods used on the military engine
plug. Before installing the spark plug, check the
include shielding the high-frequency and ignition
gap between the electrodes with a wire or leaf thick-
wires, grounding the frame with bonding straps,
ness gage. A slight drag should be felt. The desired
and using radio frequency filters composed of capac-
clearance is 0.028 (0.7112 cm) to 0.033 inch (.08382
itors and resistors.
cm). Adjust the gap by bending the outside elec-
trode until the gap is properly set. Install the plug.
4-14. Interference Suppression Com-
Use a torque wrench and tighten the spark plug to
ponents.
275-300 inch-pounds.
a. Spark Plug. The spark plugs are integrally
b. Spark Plug Cables. Loosen the connector
shielded and suppressed and are located in the cyl-
nut on each end of the cable and remove the cable.
inder head.
b. Spark Plug Cable. The high tension spark
on each end of the spark plug cable is seated before
plug cable is encased in braided metal shields. It is
tightening the connector nuts.
connected to the spark plug and engine coil cover.
c. Bonding Strap. Remove the nut attaching
c. Bonding Strap. The bonding strap is con-
the bonding strap to the contact assembly cover. Re-
nected to the governor and accessory case cover.
move the screw attaching the bonding strap to the
