Maintenance Section
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Lubricant Information
Lubricant Information
Certain abbreviations follow Society of Automotive
Engineers (SAE) J754 nomenclature and some
classifications follow SAE J183 abbreviations.
The MIL specifications are U.S.A. Military
Specifications.
The recommended oil viscosities can be found in the
Lubricant Viscosities chart in this publication.
Grease is classified by the National Lubricating
Grease Institute (NLGI) based on ASTM D217-68
Worked Penetration characteristics which are given
a defined consistency number.
Engine Oil (DEO and EO)
The following oil specifications provide guidelines for
the selection of commercial products:
Gasoline/LP Engine : API SJ or higher
NOTE: Engine Oil Service hours can be extended
to 500 hours by using Doosan supplied
specific oil. Please consult Doosan dealer
about it.
Diesel Engine : API CH4, ACEA E5
NOTICE
Failure to follow the oil recommendations can cause
shortened engine lift due to carbon deposits or
excessive wear.
Consult the EMA Lubricating Oils Data Book for a
listing of oil brands.
NOTE: The percentage of sulfur in the fuel will
affect the engine oil recommendations.
For fuel sulfur effects, the Infrared Analysis
or the ASTM D2896 procedure can be used
to evaluate the residual neutralization
properties of engine oil. The sulfur products
formation depends on the fuel sulfur content,
oil formulation, crankcase blow-by, engine
operating conditions and ambient
temperature.
Hydraulic Oil (HYDO)
The following commercial classifications can be
used in the hydraulic system.
ISO 6743/4 HM
AFNOR NFE 48-603 HM
DIN 51524 TEIL 2 H-LP
HAGGLUNDS DENISON HFO-HF2
CINCINNATI P68,69,70
Viscosity: ISO VG32
Industrial premium hydraulic oils that have passed
the Vickers vane pump test (35VQ25).
These oils should have antiwear, antifoam, antirust
and antioxidation additives for heavy duty use as
stated by the oil supplier. ISO viscosity grade of 32
would normally be selected.
NOTICE
Make-up oil added to the hydraulic tanks must mix
with the oil already in the systems. Use only
petroleum products unless the systems are
equipped for use with special products. If the
hydraulic oil becomes cloudy, water or air is entering
the system. Water or air in the system will cause
pump failure. Drain the fluid, retighten all hydraulic
suction line clamps, purge and refill the system.
Consult your DOOSAN Lift Truck dealer for purging
instructions.
Drive Axle Oil
NOTE: Do not use Gear Oil in the final drives or
differentials. Gear Oil can cause seal
material to fail and possibly leak oil.
NOTE: Failure to follow the recommendation will
cause shortened life due to excessive gear
wear.
The API CD/TO-2 specification or MIL-L-2104D, Eor
F oils could be used.
NOTE: Multi-grade oils are not blended by
DOOSAN for use in transmissions.
Multi-grade oils which use high molecular
weight polymers as viscosity index
improvers lose their viscosity effectiveness
by permanent and temporary shear of the
viscosity index improver and therefore, are
not recommended for transmission and
drive train compartments.
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