TM 9-2330-238-14
2-11. UNCOUPLING
SEMITRAILER
FROM TOWING VEHICLE
(Con’t).
c.
Install
dummy
couplings
(2) on semitrailer
service
air coupling
(1) and
semitrailer
emergency
air coupling
(3).
d.
Disconnect
intervehicular
cable (5) from semitrailer
receptacle
(4).
e.
Release kingpin
lock on towing vehicle fifth wheel plate and drive towing vehicle
away from semitrailer
(refer to towing vehicle technical
manual).
f.
Perform all After (A) PMCS in Table 2-1.
2-12. OPERATING
LANDING GEAR.
a.
Early Model.
(1)
Position lever (4) on semitrailer
side of
ratchet head (2) for direction
of rotation desired.
(2)
Landing
gear
contains
a two-speed
gearbox
(1). Push in on crankhandle
(3) to provide
a
slow-speed
action, to be used when there is a load on
the chassis.
Pull out crankhandle
to provide
a high-
speed action, to be used when there is no load on the
chassis.
(3)
Rotate crankhandle
(3) on curbside
of
semitrailer
counterclockwise
to raise
or clockwise
to
lower landing gear legs (5).
(4)
Continue turning crankhandle
(3) until
landing gear legs (5) support front of semitrailer.
TA701915
2-11
