Components Removal And Installation; Component Disassembly And Reassembly; Pressure-Fit Parts; Bearings - JLG EcoLift50 Service And Maintenance Manual

SECTION 2 - GENERAL SERVICE INFORMATION

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 perpen-
dicular 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 sim-
ilar bracket lessens, as the angle between the supporting
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, com-
plete the procedural steps in sequence. Do not partially
disassemble or assemble one part, then start on another.
Always recheck your work to assure that nothing 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.

Bearings

When a bearing is removed, cover it to keep out dirt and
abrasives. Clean bearings in nonflammable cleaning sol-
vent and allow to drip dry. Compressed air can be used
but do not spin the bearing.
Discard bearings if the races and balls (or rollers) are pit-
ted, scored, or burned.
If bearing is found to be serviceable, apply a light coat of
oil and wrap it in clean (waxed) paper. Do not unwrap
reusable or new bearings until they are ready to install.
Lubricate new or used serviceable bearings before instal-
lation. When pressing a bearing into a retainer or bore,
apply pressure to the outer race. If the bearing is to be
installed on a shaft, apply pressure to the inner race.
2-6

Gaskets

Check that holes in gaskets align with openings in the
mating parts. If it becomes necessary to hand-fabricate a
gasket, use gasket material or stock of equivalent material
and thickness. Be sure to cut holes in the right location, as
blank gaskets can cause serious system damage.

Bolt Usage and Torque Application

Use bolts of proper length. A bolt which is too long will
bottom before the head is tight against its related part. If a
bolt is too short, there will not be enough thread area to
engage and hold the part properly. When replacing bolts,
use only those having the same specifications of the origi-
nal, or one which is equivalent.
Unless specific torque requirements are given within the
text, standard torque values should be used on heat-
treated bolts, studs, and steel nuts, in accordance with rec-
ommended shop practices.
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