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18
4.5 PRE-OPERATION VEHICLE
INSPECTION PROCEDURE
The safe and trouble-free use of a Midland Trailer
requires the operator to maintain the unit in good
operating condition. To assist the operator, a pre-
operation checklist is provided that should be
followed each time before the trailer is used.
NOTE
The tractor items, part of the Department of
Transport (D.O.T.) walk around sequence, have
been omitted.
WALK AROUND SEQUENCE
Step 1 - Trailer Frontal Area
1.
Air and Electrical Connections
a. Glad hands properly mounted, free of
damage, not leaking and not worn.
b. Electrical line receptacle properly mounted,
free of damage, plug adequately seated and
safety catch engaged to prevent accidental
disconnection.
c. Hydraulic couplers properly seated and
tightened, no leaks and properly secured
against tangling, snagging and chafing, with
sufficient slack for turning.
d. Air, electrical and hydraulic lines properly
secured to avoid tangling, snagging and
chafing with sufficient slack for turns.
2.
Lights and Reflectors
a. Front trailer clearance and identification lights
- should be clean, operating and proper color.
b. Reflectors and conspicuousy tape clean and
proper color.
3.
Hydraulic Cylinder
a. Free to move on pivot.
b. No oil leaks.
Step 2 - Coupling System Area
1.
Fifth Wheel (Lower)
a. Securely mounted to frame.
b. No missing or damaged parts.
c. No visible space between upper and lower
fifth wheel.
d. Locking jaws around the shank and not the
head of Kingpin.
e. Release lever properly seated and safety
latch lock engaged.
Fig. 7 WALKAROUND SEQUENCE