3.12 Trailer Jack; Installation; Operation; Maintenance - JLG T500J Service And Maintenance Manual

SECTION 3 - CHASSIS & TURNTABLE

3.12 TRAILER JACK

Installation

1. Place the jack against the trailer tongue and position the
mounting straps on the opposite side of the tongue.
Place the straps so the flat side is against the tongue.
2. Install the bolts through the bracket and straps. Position
the jack so the top bolts rest directly on the top of the
tongue and the bottom bolts are as close to the tongue
as possible. The gap between the mounting bolts and
the trailer tongue is not to exceed 1/16" (1.6 mm).
3. Secure the bolts in place with the locknuts. Torque the
nuts to 25 ft.lbs. (34 Nm).
4. Check for clearance of handle swing, trailer light cables,
and coupler clearance.

Operation

NOTE: To avoid damaging the handle while trailering in the hori-
zontal position, secure the handle to the jack with a bun-
gee cord or rope.
The jack is designed to be swiveled into a horizontal or storage
position. In both the vertical and horizontal positions, the
plunger must be securely positioned in the mating hole in the
mounting bracket. To place the jack into the horizontal posi-
tion, allow about 2" (5 cm) of ground clearance beneath the
wheels. Pull the plunger pin out of the opening and swivel the
jack. Rotate either left or right until the plunger pin snaps into
the proper mounting bracket hole.
3-36

Maintenance

The internal gearing and bearings of the jack must be kept
lubricated. Using a needle nose applicator, pump a small
amount of automotive grease through the lubrication open-
ing. The lubrication opening can be found on the side of the
jack tube, right above the support plate. Rotate the jack han-
dle to distribute the grease evenly. Lightly grease the inner
tube of the jack using the same type of grease. A light weight
oil must be applied to the handle unit at both sides of the
tube. The axle bolt and nut assembly of the caster wheel must
also be lubricated with the same light weight oil.
GREASE
PLUNGER
PIN
OIL
3121200