hicular cable from receptacle assembly or socket assem`-
landing gear operating handcrank from its holder, en-
gage the handcrank on its shaft, and rotate the hand-
crank to cause the shoes of the landing gear legs to
make contact with the ground.
in its holder.
fifth wheel coupler jaw by pulling out jaw lock handle,
then driving the towing vehicle forward until the semi-
trailer becomes disengaged from the towing vehicle,
allowing the semitrailer to rest on its landing gear.
(1) R e m o v i n g s p a r e w h e e l a n d t i r e . W i t h w h e e l n u t w r e n c h ,
loosen two safety nuts which secure the studs of the
pickup member in the main member. Rotate the tire
slightly to free the studs and nuts from the slots. F i t
the wheel nut wrench on the operating shaft, lift the
pawl, and permit the tire to lower itself on its cable
to the ground.
Caution: Maintain firm grip on wrench in lowering
wheel and tire to prevent injury.
Remove the safety nuts and release the pickup mem-
ber from the hub opening in the wheel.
(2) Installiing spare wheel and tire. Insert the pickup mem-
ber in the hub opening, fit the securing studs in two
stud holes in the wheel, and screw the safety nuts
loosely on the studs. With the wheel nut wrench, ro-
the slots and anchor in place by tightening the safety
Section Ill. OPERATION UNDER UNUSUAL CONDITIONS
a. General Conditions.
usual conditions, special instructions of a technical na-
ture for operating and servicing these semitrailers under
unusual conditions are contained or referred to herein.