pre-trip- COUPLING Flashcards
Air lines
no abrasions, bulges, or cuts
lines and couplings not leaking
secure at both ends
Electrical lines
sealed
good condition
Glad hands
locked in place
no damage
no leaks
Electrical plug
firmly seated
locked on both ends
Catwalk
solid
clear of objects
securely bolted to tractor frame
Apron
not bent, broken, or cracked
Skid plate
trailer is lying flat
no visible gap
properly lubricated
securely mounted
Platform
securely mounted
no missing bolts
pins secure
no cracks
no breaks
Release arm
engaged when coupled
Mounting bolts
not loose
not missing
Brackets, clamps, nuts
not loose
not missing
Locking pins
not loose
not missing
fully engaged
Air hose
no abrasion, bulges, or cuts
no leaks
Skid plate
trailer is lying flat
no visible gap
properly lubricated
securely mounted
positioned properly so tractor frame will clear the landing gear during turns
Locking jaws
closed around kingpin
holding kingpin in place
