User Manual

SECTION 2 - PROCEDURES
3120884 – JLG Lift – 2-1
SECTION 2. PROCEDURES
2.1 GENERAL
This section p rovides information necessary to per form
maintenance on the aerial platform. Descriptions, tech-
niques and specific procedures are designed to provide
the safest and most ef ficient maintenance for use by per-
sonnel responsible for ensuring the correct installation
and operation of machine components and systems.
WHEN AN ABNORMAL CONDITION IS NOTED AND PROCEDURES
CONTAINED HEREIN DO NOT SPECIFICALLY RELATE TO THE
NOTED IRREGULARITY, WORK SHOULD BE STOPPED AND
TECHNICALLY QUALIFIED GUIDANCE OBTAINED BEFORE WORK
IS RESUMED.
The maintenance procedures included consist of servic-
ing an d componen t rem o val and installa tio n, disassembly,
and assembly, inspection, lubrication and cleaning. Infor-
mation on any special tools or test equipment is also pro-
vided where applicable.
2.2 SERVICING AND MAINTENANCE
GUIDELINES
General
The fo llowing inform ation is pr ovided t o assis t you in the
use and application of servicing a nd maintenance proce-
dures 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 weight. Never attemp t to move heav y
parts without the aid of a mechanical device. Do not allow
heavy objects to rest in an unstable posi tion. When raising
a portion of the equipment, ensure that adequate support
is pr ov id e d.
Cleanliness
1. The most important single item in preserving the
long service life of a machine is to keep dirt and for-
eign materials out of the vital components. Precau-
tions have been taken to safeguard against this.
Shields, covers, seals and filters are provided to
keep oil supplies clean; however, these items must
be ma int aine d on a s che duled ba sis in o rder to fun c-
tion pr operly.
2. At any time when hydraulic oil lines are discon-
nected, clear adja cent areas as well as the openings
and fittings them selves. As soon as a line or compo-
nent is disconnected, cap or cover all openings to
prevent entry of foreign matter.
3. Clean and inspect all parts during servicing or main-
tenance, an d as s ure that all passages an d op enings
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 contain-
ers until they are ready to be used.
Component Removal and Installation
1. Use adjustable lifting devices, whenever possible, if
mechanical assi stance 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.
2. Should it be necessary to remove a component on
an angle, keep in mind that the capacity of an eye-
bolt or similar bracket lessens, as th e angle between
the supporting structure and the component
becomes less than 90 degrees.
3. 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 r e assembling a component, com-
plete the proced ural steps in sequence. Do not part ially
disassemble or assemble one part, then start on another.
Always recheck your work to assure that nothing ha s 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
molybde num disulf ide base co mpound to l ubricate the
mating surface.