Section III. OPERATION UNDER USUAL CONDITIONS
2-33 Preparing M129 Series Van Semitrailer for
Preparation for Use
Operating Towing Vehicle and Semitrailer
2-37 Operating Spare Tire Carrier
Uncoupling Semitrailer from Towing Vehicle
Service and Data Plates
This section contains the following:
. Preparing the semitrailer for use
. Coupling semitrailer to towing vehicle
. Operating towing vehicle and semitrailer
. Uncoupling semitrailer from towing vehicle
. Preparing M129 series van semitrailer for stationary use
. Operating spare tire carrier
. Service and data plates
Perform the preventive maintenance checks and services (B-Before Operation Column) listed in Table 2-1
before doing the following procedures. These checks and services will determine that the semitrailer is ready
a. Positioning the Chock Blocks.
(1) Remove the chock block (1) from the
stowage bracket (2).
(2) Depending upon the terrain, place
chock blocks (1) firmly behind or
forward of wheels on each side of
b. Coupling the Semitrailer to Towing Vehicle.
Be sure all personnel stand clear of the
tractor and semitrailer during coupling
(1) Aline the towing vehicle with the semitrailer.
(2) Slowly back the towing vehicle into position.
Be sure the kingpin (1) is in line with the
fifth wheel coupler jaws (2).
(3) Just before the kingpin plate of the semi-
trailer starts to ride upon the fifth wheel (5)
of the towing vehicle, stop the towing vehicle!