CX31 and CX31 HT On-Highway Transmissions Caterpillar


Capacities (Refill)

Usage:

CX31 D9F

Table 1
Transmission Type  Estimated Initial Fill  Service Refill 
CX31 Standard Sump  45 L (12 US gal)  25 L (6.5 US gal) 
CX31 with Retarder  49 L (13 US gal)  27 L (7 US gal) 

Note: The estimated initial fill volumes will vary by each application. 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.

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Installation Angle and Vehicle Slope Capability

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The transmission was designed to operate in a horizontal plane that allows for proper hydraulic functionality of the lube circuit, control circuit, and pressure circuit. Refer to Tables 2 and 3 for slope capability.

Engine Forward Applications (Operating Angles)

Table 2
Maximum Operation Angle (Degrees)
(Engine forward applications) 
Condition  Standard Sump   Retarder Equipped  
Uphill  31  31 
Downhill  31  31 

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  Standard Sump  Retarder Equipped  
Uphill  31  31 
Downhill  31  31 

Transmission Side Slope (Operating Angles)

Table 4
Maximum Operation Angle (Degrees Roll) 
Condition  Standard Sump  Retarder Equipped  
Left/Right roll  16  16 

Caterpillar Information System:

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