Harbor Freight Tools 37792 Automobile Parts User Manual


 
Assembly (continued)
Screw on the Locking Nut (#11) and tighten the nut securely.
4. Plan the location of the Trailer Jack. Examine both sides of the trailer tongue and choose the appro-
priate location for the jack, keeping in mind the mounting method, and the need to turn the Crank
Handle. The Trailer Jack is designed to be mounted on either side of the trailer tongue, and pivot in
either direction (caster wheel forward or to the rear).
5. Before installing the Trailer Jack, properly support the tongue of the trailer so that it is high enough
off the ground to provide clearance for the jack. Take precautions to insure the trailer is blocked and
will not roll.
6. Position the Trailer Tongue Assembly portion of the Trailer Jack on top of the tongue. Position the
loose plate of the Trailer Tongue Assembly underneath the tongue. Insert bolts through the top plate
and through to the bottom plate. Note the hole selections on the loose plate. Use the hole positions
which will best support your trailer tongue design. Install lock washers and nuts. At this time tighten
nuts only enough to hold the Trailer Jack in position for adjustment.
7. Inspect the position of the Trailer Jack. Check the squrareness of the mount position, and tap lightly
into alignment with a hammer and a wood block if necessary. Bolts should be at right angles to the
mounting plates. There should be proper clearance of the trailer tongue from the Jack Shaft. Once
determined that the Trailer Jack is properly positioned, tighten the nuts evenly, increasing pressure by
small increments on alternate bolts so that the mounting plates remain parallel. Nuts should be more
than tight enough to fully compress the washers, but not tight enough to damage the threads. Turn the
Crank Handle both ways to make sure the Trailer Jack is functioning properly.
8. Before operating the Trailer Jack, lubricate the grease fitting on the side of the Trailer Tongue As-
sembly. Use a good quality gear grease. Lubricate periodically while the Trailer Jack is in use.
Read and understand carefully the warnings and cautions described below as they pertain to
the operation of the Trailer Jack:
1. Be aware that the user/installer of this prod-
uct is solely responsible for the way the Trailer
Jack is installed, operated and maintained, and is
responsible for any and all consequences that
occur, whether or not anticipated in these
warning statements.
2. Never exceed the rated load capacity of 550
lbs. for the jack.
3. Never loosen, adjust, or take apart the top
and bottom plates of the Trailer Tongue Assem-
bly while the Trailer Jack is supporting any
weight.
4. Before each use, verify that the plates of the
Trailer Tongue Assembly and the trailer tongue
are securely attached, and that all bolts and nuts
are tight and in good condition.
5. Always keep feet, arms, and legs out from
under the trailer tongue while hitching, unhitch-
ing, or moving the trailer. Children should be
kept at a safe distance, and should never be
allowed to operate the Trailer Jack.
6. Always take precautions to prevent uncon-
trolled movement of the trailer when the Trailer
Jack is being used. Be cautious of the slope of
the road and be aware of the pull of gravity
when using this product.
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