Proper lubrication steps are the crucial to a good all-around maintenance program. If the oil is not doing its job, or if the oil level is ignored, every the maintenance steps in the world room not going to save the infection running or assure lengthy transmission life.Eaton Fuller transmissions space designed so that the internal parts operate in a bath of oil circulated by the motion of gears and shafts.Thus, all parts will it is in amply lubricated if these actions are closely followed:1. Keep oil level. Check regularly.2. Change oil regularly.3. Use the correct grade and type of oil.4. Buy from a reliable dealer.

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Eaton Roadranger CD5O transmission FluidHIGHWAY USE-Heavy Duty and Mid.RangeHeavy Duty Highway adjust IntervalMid.Range Highway adjust IntervalOFF-HIGHWAY USEHeavy Duty Engine Lubricant or Mineral gear LubricantHIGHWAY USEOFF-HIGHWAY USE
First 3,000 come 5,000 miles (4827 to 8045 Km)Factory fill, initial drain
Every 10,000 miles (16090 Km)Check liquid level Check for leaks
Every 250,000 miles (402336 km)Change transmission fluid
Every 100,000 miles (160,000 Km) or every 3 years whichever wake up firstChange infection fluid
First 30 hoursFactory to fill initial drain
Every 40 hoursInspect liquid level, inspect for leaks
Every 500 hoursChange infection fluid where significant dirt conditions exist
Every 1,000 hoursChange transmission fluid (Normal off-highway use)
First 3,000 to 5,000 miles (4827 come 8045 Km)Factory fill, initial drain
Every 10,000 miles (16090 Km)Inspect lubricant level, check for leaks
Every 50,000 miles (80450 Km)Change infection lubricant
First 30 hoursChange infection lubricant on brand-new units
Every 40 hoursInspect lubricant level, check for leaks
Every 500 hoursChange transmission lubricant where major dirt conditions exist
Every 1,000 hoursChange transmission lubricant (Normal off-highway use)

TypeGrade (SAE)Fahrenheit(Celcius)Ambient TemperatureEaton Roadranger CD50 infection Fluid50All
Heavy Duty Engine OilMIL-L-2104B, C, or D orAPI-SF or API-CD(Previous API designations acceptable)504030Above 10°F (-12°C)Above 10°F (-12°C)Below 10°F (-12°C)
Minral gear Oil withrust oxidationinhibitor API-GL-19080WAbove 10°F (-12°C)Below 10°F (-12°C)

The use of mild EP equipment oil or multipurpose gear oil is not recommended, yet if these gear oils space used, be sure to adhere come the adhering to limitations:Do not use mild EP gear oil or multipurpose equipment oil when operating temperatures are above 230ºF (110ºC). Many of these gear oils, particularly 85W140, failure above 230ºF and coat seals, bearings and also gears through deposits the may reason premature failures. If these deposits are observed(especially a coating ~ above seal locations causing oil leakage), change to Eaton Roadranger CD5O transmission fluid, heavy duty engine oil or mineral equipment oil to assure maximum component life and to preserve your warranty with Eaton.(Also see “Operating Temperatures”.)Additives and also friction modifiers room not encourage for use in Eaton Fuller transmissions.

Proper Oil Level

Make certain oil is level with filler opening. Due to the fact that you can reach oil v your finger walk not median oil is at the suitable level. One inch of oil level is around one gallon that oil.

Draining Oil

Drain infection while oil is warm. To drainpipe oil remove the drain plug at the bottom that the case. Clean the drain plug prior to reinstalling.


Clean case about filler plug and remove the plug from next of the case. Fill transmission to the level that the filler opening. If the transmission has actually two filler openings, to fill to level the both openings.The exact amount of oil will rely on the transmission inclination and model. Execute not overfill; this will reason oil come be forced out the the transmission.When including oil, types and brand of oil have to not be mixed since of possible incompatibility.

Operating Temperatures


– through engines the 350 H.P. And above with overdrive transmission


– through engines 399 H.P. And above with overdrive transmissions and also GCWs over 90,000 lbs.– through engines 399 H.P. And over and 1400 Lbs.-Ft. Or higher torque– v engines 450 H.P. And also above

With EP or Multipurpose equipment Oil

Mild EP gear oil and multipurpose gear oil space not recommended as soon as lubricant operation temperatures are above 230ºF (110ºC). In addition, transmission oil coolers space not recommended with these gear oils because the oil cooler materials may be struck by these gear oils. The reduced temperature limit and also oil cooler restriction with these equipment oils generally limit your success to milder applications.

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Proper Lubrication levels as regarded Transmission environment AnglesIf the transmission operating angle is an ext than 12 degrees, not correct lubrication have the right to occur. The operating angle is the transmission mounting angle in the chassis plus the percent of update (expressed in degrees).The chart illustrates the safe percent of an upgrade on i m sorry the transmission deserve to be used with assorted chassis mounting angles. For example: if you have actually a 4-degree infection mounting angle, climate 8 degrees (or 14 percent of grade) is same to the border of 12 degrees. If you have actually a 0-degree mounting angle, the transmission deserve to be activate on a 12 degree (21 percent) grade.Anytime the transmission operating angle the 12 degrees is gone beyond for an extended duration of time the transmission should be equipped through an oil pump or cooler kit to ensure ideal lubrication.Note top top the graph the result low oil levels deserve to have top top safe operating angles. Allowing the oil level to fall 1/2″ listed below the filler plug hole reduces the level of class by approximately 3 levels (5.5 percent).


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