RING-SEAL 9G0286 - Caterpillar

The Series CX On-Highway Transmissions are designed to operate with "ATF" fluids that meet Caterpillar "AT-1" or Dexron "IIIH" or "TES-389" specifications. Extended oil change intervals require synthetic oils meeting Caterpillar "AT-1" specifications. Caterpillar ATF synthetic oil is available through Caterpillar dealers. Refer to the Operation and Maintenance Manual for oil change intervals based on applications.Note: Do not use Caterpillar "TDO-4" oil in the Series CX of On-Highway Transmissions.
Table 1
Transmission Type    Estimated Initial Fill    Service Refill    
CX28 Shallow Sump     34 L (9 US gal)    
17 L (4.5 US gal)    
CX28 Standard Sump    
38 L (10 US gal)    
19 L (5 US gal)    Note: The estimated initial fill volumes will vary by each application. The fluid volume that is required for the initial fill can be estimated by adding the fluid volume of the cooler and associated hoses to the transmission service refill volumes.Installation Angle and Vehicle Slope Capability
The transmission was designed to operate in a horizontal plane that allows for proper hydraulic functionality of the lube, control, and pressure circuits. Refer to Tables 2 and 3 for slope capability.Engine Forward Applications (Operating Angles)
Table 2
Maximum Operation Angle (Degrees)
(Engine forward applications)    
Condition    Shallow Sump    Standard Sump    Retarder Equipped    
Uphill     31 degrees     31 degrees     31 degrees    
Downhill     24 degrees     31 degrees     31 degrees    Engine Aft Applications (Operating Angles)
Uphill and downhill conditions for the engine aft applications are the opposite of operating conditions for the engine forward applications. Refer to Tables 3 and 4 for slope capability.
Table 3
Maximum Operation Angle (Degrees)
(Engine aft applications)    
Condition    Shallow Sump    Standard Sump    Retarder Equipped    
Uphill     24 degrees     31 degrees     31 degrees    
Downhill     31 degrees     31 degrees     31 degrees    Transmission Side Slope (Operating Angles)
Table 4
Maximum Operation Angle (Degrees Roll)    
Condition    Shallow Sump    Standard Sump    Retarder Equipped    
Left Roll and Right Roll     16 degrees     16 degrees     16 degrees