Table 3-1. Operator Troubleshooting Procedures (Con't).
TEST OR INSPECTION
Look under semitrailer and
check air lines for kinks,
breaks, or loose connec-
tions. Listen for leaks along
air lines, at connections, and
If kinks, breaks, leaks,
or loose connections
are found, notify unit
Check air reservoir drain-
cocks (1) for obstructions
which may prevent them
draincocks. If damage
is found, notify unit
BRAKES WILL NOT RELEASE
Check that parking/emergency brakes in tractor are not set (see TM 9-2320-273-10
or TM 9-2320-283-10).
Release parking/emergency brakes in tractor (see TM 9-2320-273-10 or
Check that tractor has developed sufficient air pressure to release semitrailer park-
ing/emergency brakes. Air pressure should read at least 65 psi (448 kPa) (see
TM 9-2320-273-10 or TM 9-2320-283-10).
If air pressure gage in tractor shows insufficient air pressure, notify unit mainte-
EMERGENCY air coupling is red.
Check that intervehicular EMERGENCY air coupling is properly connected (see para-
Connect air coupling properly. Connect tractor's EMERGENCY air coupling to