JLG 45e Service Manual - Manual (Page 28)

SECTION -
-2 – JLG Lift – 3120861
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 bear-
ing is to be installed on a shaft, apply pressure 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. 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.
2. Unless specific torque requirements are given within
the text, standard torque values should be used on
heat treated bolts, studs and steel nuts, in accor-
dance with recommended shop practices (See Fig-
ure 1-1).
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 interval. When recommended lubricants are
not available, consult your local supplier for an equivalent
that meets or exceeds the specifications listed.
Batteries.
Clean batteries using a non-metallic brush and a solution
of baking soda and water. Rinse with clean water. After
cleaning, thoroughly dry batteries and coat terminals with
an anti-corrosion compound.
Lubrication and Servicing.
Components and assemblies requiring lubrication and
servicing are shown in Lubrication Chart.
2.3 LUBRICATION INFORMATION.
Hydraulic System.
1. The primary enemy of a hydraulic system is contam-
ination. Contaminants enter the system by various
means, e.g.; inadequate hydraulic oil, allowing mois-
ture, grease, filings, sealing components, sand, etc.
to enter when performing maintenance, or by per-
mitting the pump to cavitate due to insufficient sys-
tem warm-up.
2. The design and manufacturing tolerances of the
component working parts are very close, therefore,
even the smallest amount of dirt or foreign matter
entering a system can cause wear or damage to the
components and generally results in faulty opera-
tion. Every precaution must be taken to keep
hydraulic oil clean, including reserve oil in storage.
Hydraulic system filters should be checked,
cleaned, and/or replaced at the specified intervals
required in Figure 1-2. Always examine filters for evi-
dence of metal particles.
3. Cloudy oils indicate a high moisture content which
permits organic growth, resulting in oxidation or cor-
rosion. If this condition occurs, the system must be
drained, flushed, and refilled with clean oil.
4. It is not advisable to mix oils of different brands or
types, as they may not contain the same required
additives or be of comparable viscosities. Good
grade mineral oils, with viscosities suited to the
ambient temperatures in which the machine is oper-
ating, are recommended for use.
NOTE: Metal particles may appear in the oil or filters of new
machines due to the wear-in of meshing compo-
nents.
Hydraulic Oil.
1. Refer to Table 1-1 for recommendations for viscosity
ranges.