Engine Oil
The refill capacities for the engine crankcase reflect the approximate capacity of the crankcase or sump plus standard oil filters. Auxiliary oil filter systems will require additional oil. Refer to the OEM specifications for the capacity of the auxiliary oil filter.
| C9 Petroleum Engine Approximate Refill Capacities |
||
|---|---|---|
| Refill Capacity for Changing the Oil and the Filter | ||
| System | Liters | Quarts |
| Oil Sump (1) | 30 | 32 |
| ( 1 ) | These values are approximate capacities for the crankcase oil sump which include the standard oil filters that are installed at the factory. Engines with auxiliary oil filters will require additional oil. Refer to the OEM specifications for the capacity of the auxiliary oil filter. |
Transmission and Torque Converter Capacities
The fill volume will increase because of the output transfer gear. A larger drop in oil level can be expected. There are more lines that need to be filled on a transmission that has an output transfer gear. The transmission needs to be topped off to the full cold mark on the dipstick.
TH31 Transmission
| Compartment or System | Liters | US Gallons | Imperial Gallon |
| Transmission and Torque Converter System (Refill Capacity) | 36 | 10 | 8.1 |
The refill capacities that are listed in Table 2 are for filling the transmission during routine maintenance. Initial system fills or refills after system repairs will require additional oil in order to fill the oil filter lines, the oil filters, and the torque converter. This additional amount of oil will vary between Original Equipment Manufacturers due to different lengths of hoses that are used for the oil filter lines. Refer to Operation and Maintenance Manual, "Torque Converter and Transmission Oil Level - Change" for the proper procedure in order to fill the transmission.
| Compartment or System with Output Transfer Gear | Liters | US Gallons | Imperial Gallon |
| Transmission and Torque Converter System (Refill Capacity) | 50 | 13 | 11 |
Coolant System
To maintain the cooling system, the total cooling system capacity must be known. The capacity of the total cooling system will vary. The capacity will depend on the size of the radiator (capacity). Table 4should be completed by the customer for the maintenance of the cooling system.
| Approximate Capacity of the Cooling System | ||
| Compartment or System | Liters | Quarts |
| Total Cooling System (1) | ||
| ( 1 ) | The total cooling system capacity includes the following components:the engine block, the radiator and all coolant hoses and lines. |
Note: Refer to Special Publication, SEBU6251, "Caterpillar Commercial Diesel Engine Fluids Recommendations" for additional information that relates to coolant for your engine.