TO PRIME MOVER AND RAISING TRAILER.
To prevent damage to the trailer and the prime mover, do not connect the
hydraulic lines to a prime mover that does not use the approved military
Coupling operations will be conducted with the gooseneck attached to the trailer.
Hearing protection is required for personnel when performing any function
on the M870A3 when the prime mover is in use. Failure to do so could
result in injury to personnel.
The M870A3 Semitrailer should always have the wheels chocked, with or
without a load, during coupling or uncoupling to prime mover and when
parked. Failure to not chock the wheels may result in injury or death to
Never stand between the prime mover and trailer when the prime mover
is being backed up to the trailer. Serious injury or death may result.
All persons not involved in coupling/uncoupling operation must stand clear
of prime mover and trailer to prevent serious injury.
To prevent damage to the equipment, coupling should be done by two people,
the first person in the prime mover cab and the second acting as a ground guide.
Line up prime mover with trailer and note whether the height of the gooseneck kingpin is
sufficient to couple with the prime mover bed plate.