Broderson RT-400-A, Operation And Maintenance Manual

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3-33
HYDRAULIC OILS FOR RT-400
AMBIENT TEMP RANGE:
-40° to 75°F -15° to 110°F 50° to 130°F
(40° to 24°C) (26° to 43°C) (10° to 54°C)
POUR POINT:
-40°F MAX -15°F MAX 0°F MAX
(-40°C) (-26°C) (-18°C)
VISCOSITY INDEX:
140 MIN 95 to 100 95 to 100
VISC. SSU @ 100°F:
200 MAX 230 MAX 340 MAX
SSU @ 210°F:
44 MIN 47 MIN 53 MIN
EXAMPLES:
MOBIL DTE-13 MOBIL AW-46 MOBIL AW-68
MOBIL UNIV.-ATF MOBIL DTE-25 MOBIL DTE-26
TEXAMATIC TYPE F CONOCO SUPER 46 CONOCO SUPER 68
TEXACO HD 46 TEXACO HD 68
OTHER REQUIREMENTS:
Must contain rust and oxidation inhibitor, and antifoam & antiwear
agents. Must pass Vickers Vane Pump Test.
The RT-400 is factory-filled with hydraulic oil for the -15° to 110°F (-26° TO 43°C) range. If sig-
nificant portions of run time are spent operating below 20°F (-7°c) or above 100°F (43°C), the oil
should be replaced with an extreme temperature oil.
CAUTION
Never add kerosene or other thinners to hydraulic oil. These fluids have low aniline
points and consequently will cause rapid deterioration of certain packings and seals in
the hydraulic system.
CAUTION
Serious damage to the pumps will result if it is run with insufficient oil level in the reser-
voir or the pumps are allowed to cavitate.
Observe the operation of the machine. If the oil is too cold (below 40
°
F (5
°
C)), the machine will
operate at slower speeds due to the increased viscosity of the fluid. It should be warmed up
further to prevent damage to hydraulic components before sustained hard work is attempted. If
the oil is too hot (above 210
°
F (99
°
C)), bleed-by leakage will increase, pump efficiency will go
down, and moving parts may not be properly lubricated. If operating temperature continues to
be excessive, rapid deterioration of the oil will result and moving parts and seals will wear more
quickly. The cause of the excess heat should be determined and corrected. The hydraulic
temperature in the tank can be monitored on the dash display.