JLG 1230ES, Service And Maintenance Manual

Page: 30 / 204

SECTION 2 - GENERAL SERVICE INFORMATION
2-6 – JLG Lift – 3121222
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
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 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
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 replac-
ing bolts, use only those having the same specifications
of the original, 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 recommended shop practices or the Torque Chart
Figures in Section 1 of this Service Manual.
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
Keep the system clean. If evidence of metal or rubber
particles is found in the hydraulic system, drain and
flush the entire system.
Disassemble and reassemble parts on clean work sur-
face. Clean all metal parts with non-flammable cleaning
solvent. Lubricate components, as required, to aid
assembly.
Lubrication and Servicing
Components and assemblies requiring lubrication and
servicing are shown in Section 1.2, LUBRICATION. Ser-
vice 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 equiva-
lent that meets or exceeds the specifications listed.
Batteries
Clean batteries, using a non-metallic brush and a solu-
tion of baking soda and water. Rinse with clean water.
After cleaning, thoroughly dry batteries and coat termi-
nals with an anti-corrosion compound.