Changing Fluid; Changing Lubrication - Doosan DX140R Shop Manual

Changing Fluid

The standard interval for changing hydraulic fluid is every 1000
hours or one year.
Hydraulic fluid may be changed within the standard interval if
there is significant reduction in volume, subject to the following
standards.
Test item
Viscosity change (40°C)
Total oxidation (mg KOH/g)
Water content (%)
Impurities
Impurities (%)

Changing Lubrication

Reduction gear lubricating oil (gear oil) is added at time of
delivery.
1. Selecting Gear Oil - Recommended Grades
A. Use SAE 90 equivalent gear oil (API type GL-4 or
higher) with ultra-high pressure additives.
B. Recommended product names follow:
Supplier
Idemitsu
Esso
Showa Shell
Cosmo
Nippon Oil
Mobil
Japan Energy
2. Gear Oil Change Interval
A. First change (initial change after starting operation)
after 500 hours
B. Second and following changes: after 1000 hours or
one year
C. Change standard
Test item
Viscosity change (40°C)
(mm
Water content (%)
Travel Moter
Change standard
± 10%
Consult oil supplier.
Additive types vary according
to manufacturer.
0.1%
10 mg/100ml
0.05%
Product Name
Appoloil Gear HE 90
Esso Gear Oil GP 90
Shell Spirax EP 90
Cosmo Gear Oil GL-4 90
Hypoid Gear Oil SP 90
Mobilube HD 90
Gear 4
Change standard
10% or less of new oil.
2
/s)
0.2 % or less.
SP001346
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