JLG 3246ES Service Manual - Manual (Page 31)

SECTION 2 - GENERAL
3121166 – JLG Lift – 2-3
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.
Bearings
1. When a bearing is removed, cover it to keep out
dirt and abrasives. Clean bearings in nonflamma-
ble cleaning solvent and allow to drip dry. Com-
pressed air can be used but do not spin the
bearing.
2. Discard bearings if the races and balls (or rollers)
are pitted, scored, or burned.
3. 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.
4. Lubricate new or used serviceable bearings before
installation. 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 pres-
sure to the inner race.
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
1. Self locking fasteners, such as nylon insert and
thread deforming locknuts, are not intended to be
reinstalled after removal. Always use new replace-
ment hardware when installing locking fasteners.
2. 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 original, or
one which is equivalent.
3. 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 recommended shop practices.
(See Torque Chart Section 1.)
Hydraulic Lines and Electrical Wiring
Clearly mark or tag hydraulic lines and electrical wiring,
as well as their receptacles, when disconnecting or
removing them from the unit. This will assure that they
are correctly reinstalled.
Hydraulic System
1. Keep the system clean. If evidence of metal or rub-
ber particles are found in the hydraulic system,
drain and flush the entire system.
2. Disassemble and reassemble parts on clean work
surface. Clean all metal parts with non-flammable
cleaning solvent. Lubricate components, as
required, to aid assembly.
Lubrication
Service applicable components with the amount, type,
and grade of lubricant recommended in this manual, at
the specified intervals. When recommended lubricants
are not available, consult your local supplier for an
equivalent that meets or exceeds the specifications
listed.
Battery
Clean battery, using a non-metallic brush and a solution
of baking soda and water. Rinse with clean water. After
cleaning, thoroughly dry battery and coat terminals
with an anti corrosion compound.
Lubrication and Servicing
Components and assemblies requiring lubrication and
servicing are shown in the Lubrication Chart in Section
1.