Unhooking - Midland SIDE DUMP GRAVEL TRAILER Operator's Manual

4.6.2

UNHOOKING

1. Position towing unit and trailer in a straight line on
a clear, level and firm surface.
2. Apply the trailer brakes and the parking brakes on
the tractor before dismounting.
3. Place blocks or chocks in front of and behind
trailer wheels if not on a level surface.
4. Place large blocks or planks under landing gear if
the ground is soft.
5. Lower landing gear:
a. Remove pins from legs of drop leg style
landing gear. Raise leg slightly if required to
install anchor pin.
b. Use crank to lower leg on crank style landing
gear. Lower leg until pads solidly contact the
ground but do not lift trailer off fifth wheel.
Stow crank.
6. Unhook fifth wheel coupler.
7. Charge trailer air system and apply brakes.
8. Release tractor unit parking brake and pull slowly
forward until the trailer frame just slides down the
fifth wheel ramp. Stop.
9. Set the parking brake on the tow unit before
dismounting.
10. Check that the surface under the landing pads
can support the trailer. Support with blocks or
planks if required. This is particularly important if
the trailer will be loaded while unhooked.
IMPORTANT
Only crank type landing gear can support a
loaded trailer.
11. Disconnect air and hydraulic line and electrical
connector.
12. Install glad hands on dead end connectors if so
equipped.
13. Drive tow vehicle away from trailer.
14. Inspect the equipment. Document problems
found so they can be corrected before the unit
will be used the next time. Record problems and
repairs for your files.
Manual
Fig. 11 LANDING GEAR
Drop
23