Maintenance Section
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Lubricant Specifications
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:
API CJ-4 for 500 hours service interval
API CK-4 for 1,000 hours service interval
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 an engine
oil. The sulfur products formation depends on
the fuel sulfur content, oil formulation,
crankcase blowby, 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 VG 32
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.
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