U-Line H-1545 User manual

PAGE 1 OF 2 0515 IH-1544
TRAILER JACK
1-800-295-5510
uline.com
πH-1544, H-1545
H-2117, H-2732
SAFETY
OPERATION
WARNING: Improper or careless use of this
product might result in death or serious
personal injuries sustained by the operator and
bystanders.
Failure to read and understand this manual before
using or servicing a trailer-stabilizing jack is misuse. Any
person who will use or maintain this product must be
familiar with all instructions and warnings in this manual.
• DO NOT perform maintenance on or repair a
loaded (in use) jack.
• DO NOT use this product unless all labels are in
place and legible.
• DO NOT use a stabilizing jack if it is damaged.
• ONLY use the stabilizing jack on compacted,
improved surfaces (i.e. concrete) that are even and
level. This product will not stabilize trailers parked on
uneven or sloped ground.
• DO NOT use a stabilizing jack to support trailers. This
jack designed to stabilize trailers that are supported
by landing gear (trailer dolly jack). NEVER use a
stabilizing jack without deployed landing gear in
normal condition.
• ONLY qualified maintenance personnel should maintain
and repair this product. Improperly maintained
stabilizing jacks might become unsafe to use.
• DO NOT modify a trailer-stabilizing jack in any way.
The trailer-stabilizing jack is intended to be used to
support the ends of a semitrailer that is parked against
a loading dock and not connected to a truck’s fifth
wheel. The semitrailer must be situated on a flat, stable,
improved (preferably concrete) surface.
The load rating in pounds is shown on the information
label located on the side of the jack. Two ratings appear
on the label: a static rating – how much weight the jack
will stabilize; and a lifting rating – how much weight the
screw mechanism of the jack can lift.
NOTE: The need to use trailer-stabilizing jacks, the
number necessary and the exact placement of
jacks under the semitrailer must be determined
by a qualified person responsible for the
loading or unloading of the trailer.
WARNING: Improper or careless use of this
product might result in death or serious
personal injuries sustained by the operator
and bystanders.

PAGE 2 OF 2 0515 IH-1544
OPERATION CONTINUED
Before installing stabilizing jacks beneath a semitrailer:
1. It must be entirely and stably supported by its
landing gear.
2. The trailer wheels must be properly immobilized to
resist creep or roll.
3. The surface on which the jack(s) will be used must be
even, level, compacted and improved (concrete) to
prevent the jack from sinking into the ground.
4. Confirm that the underside of the trailer is sound where
the stabilizing jack(s) will contact it. If the point of contact
is unsound, the jack might break through the trailer.
5. DO NOT exceed the load ratings.
To raise and lower the top cap: models H-1545, H-2117
and H-2732 utilize a ratcheting mechanism (the same
handle used for moving the jack around is used for the
ratchet), model H-1544 utilizes handles that are affixed
to the screw hub.
Tip the stabilizing jack onto its wheels and roll it under the
hitch-end (front) of the semitrailer. If using a single jack,
place it on the centerline of the trailer’s width. When
using two jacks, place one under each front corner.
NOTE: Additional stabilizing jacks might
be required under the rear corners of the
semitrailer if the distance from the rear axle to
the back end of the semitrailer is more than 1⁄4
of the overall length of the trailer.
Adjust the height of the jack so that the top cap of
the jack presses firmly against the underside of the
semitrailer frame. However, the trailer landing gear must
at all times remain in solid contact with the ground in
order to provide support for the front end of the trailer
Jacks must be removed before backing a tractor
underneath the semitrailer. To remove a trailer jack,
lower the top cap so that it no longer contacts the
bottom of the trailer; then, tip the jack backwards and
roll it out from under the trailer.
πCHICAGO • ATLANTA • DALLAS • LOS ANGELES • MINNEAPOLIS • NYC/PHILA • SEATTLE • MEXICO • CANADA
1-800-295-5510
uline.com