JLG 1230ES Service Manual - Manual (Page 29)

SECTION 2 - GENERAL SERVICE INFORMATION
3121222 – JLG Lift – 2-7
Lubrication Specifications
Specified lubricants, as recommended by the component
manufacturers, are always the best choice, however,
multi-purpose greases usually have the qualities which
meet a variety of single purpose grease requirements.
Should any question arise regarding the use of greases in
maintenance stock, consult your local supplier for evalua-
tion. Refer to Section 1.2, LUBRICATION of this Service
Manual for an explanation of the lubricant key designa-
tions appearing in the Lubrication Chart.
Hydraulic Oil
For best performance, JLG recommends the use of ISO-
Vg grade 15 oil with a viscosity range between 15-250
SUS at 100 degrees F (32-54 cST at 40 degrees C). Refer
to Section 1.2, LUBRICATION of this Service Manual for
recommended hydraulic oils.
Changing Hydraulic Oil
Use of any of the recommended hydraulic oils eliminates
the need for changing the oil on a regular basis. If it is nec-
essary to change the oil, use only those oils meeting or
exceeding the specifications appearing in this manual. If
unable to obtain the same type of oil supplied with the
machine, consult local supplier for assistance in selecting
the proper equivalent. Avoid mixing petroleum and syn-
thetic base oils. JLG Industries recommends changing the
hydraulic oil annually.
Use every precaution to keep the hydraulic oil clean. If the
oil must be poured from the original container into
another, be sure to clean all possible contaminants from
the service container.
While the unit is shut down, a good preventive mainte-
nance measure is to make a thorough inspection of all
hydraulic components, lines, fittings, etc., as well as a
functional check of each system, before placing the
machine back in service.