JLG 1230ES Service And Maintenance Manual Download

Page: 29 / 204

SECTION 2 - GENERAL SERVICE INFORMATION

3121222

– JLG Lift –

2-5

2.3

SERVICING AND MAINTENANCE GUIDELINES

General

The following information is provided to assist you in
the use and application of servicing and maintenance
procedures contained in this chapter.

Safety and Workmanship

Your safety, and that of others, is the first consideration
when engaging in the maintenance of equipment.
Always be conscious of component weight. Never
attempt to move heavy parts without the aid of a
mechanical device. Do not allow heavy objects to rest in
an unstable position. When raising a portion of the
equipment, ensure that adequate support is provided.

NEVER WORK UNDER AN ELEVATED PLATFORM UNTIL PLATFORM HAS BEEN
SAFELY RESTRAINED FROM ANY MOVEMENT BY BLOCKING OR OVERHEAD
SLING.

Cleanliness

The most important single item in preserving the long
service life of a machine is to keep dirt and foreign
materials out of the vital components. Precautions have
been taken to safeguard against this. Shields, covers,
seals, and filters are provided to keep the wheel bear-
ings, mast sections and oil supply clean; however, these
items must be maintained on a scheduled basis in order
to function properly.

At any time when oil lines are disconnected, clear adja-
cent areas as well as the openings and fittings them-
selves. As soon as a line or component is disconnected,
cap or cover all openings to prevent entry of foreign
matter.

Clean and inspect all parts during servicing or mainte-
nance, and assure that all passages and openings are
unobstructed. Cover all parts to keep them clean. Be
sure all parts are clean before they are installed. New
parts should remain in their containers until they are
ready to be used.

Components Removal and Installation

Use adjustable lifting devices, whenever possible, if
mechanical assistance is required. All slings

(chains,

cables, etc.)

should be parallel to each other and as near

perpendicular as possible to top of part being lifted.

Should it be necessary to remove a component on an
angle, keep in mind that the capacity of an eyebolt or
similar bracket lessens, as the angle between the sup-
porting structure and the component becomes less
than 90 degrees.

If a part resists removal, check to see whether all nuts,
bolts, cables, brackets, wiring, etc., have been removed
and that no adjacent parts are interfering.

Component Disassembly and Reassembly

When disassembling or reassembling a component,
complete the procedural steps in sequence. Do not par-
tially disassemble or assemble one part, then start on
another. Always recheck your work to assure that noth-
ing has been overlooked. Do not make any adjustments,
other than those recommended, without obtaining
proper approval.

Pressure-Fit Parts

When assembling pressure-fit parts, use an “anti-seize”
or molybdenum disulfide base compound to lubricate
the mating surface.

Figure 2-1. Platform Mast Support Tool.

1. Elevate platform/outer mast (1) approximately 3 ft. (1m).

2. Place (JLG P/N-1001094004) mast support tool (2) between the

mast and the front frame by hooking the bracket (3) over the
front frame plate at bottom as shown above.

3. Lower the platform until the bottom edge of the platform/outer

mast section (1) is resting on the hook bracket (4) at the top of
the mast support tool.