TM 9-2330-203-14&P
2-13.
UNCOUPLING SEMITRAILER FROM DOLLY
WARNING
All personnel must stand clear of towing vehicle, dolly, and trailer during uncoupling
operation. Failure to follow this warning may result in serious injury or death to
personnel.
a. Set parking brake on towing vehicle and lower semitrailer landing leg.
b. Position chock blocks in front of and behind semitrailer wheels.
CAUTION
Do not permit dirt to enter air hoses or airbrake system. Stow dolly hoses In stowage
compartment and cover semitrailer connections with dummy couplings.
c. Close shut-off valves on towing vehicle. Disconnect dolly air couplings from semitrailer. Semitrailer brakes will
set automatically when emergency air hose is uncoupled.
d. Disconnect 12- or 24-volt intervehicular cable and stow in dolly stowage compartment.
NOTE
Step e is for M197A1 and M198A1 only.
e. If dolly is to be towed, connect 12- or 24-volt intervehicular cable to rear chassis wiring harness.
f. Cover semitrailer and towing vehicle plugs with covers provided.
g. Pull control lever (2) as far forward as possible
to release semitrailer kingpin from jaws (3) of fifth wheel
(1). Slowly drive towing vehicle forward until semitrailer
is disengaged from dolly.
TA510666
2-11
