Endurant HD
TRSM0950 EN-US
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December 2024 - A

Vehicle Maintenance Recommendations

Transmission Air Supply

For optimal performance, the Endurant transmission requires a nominal air supply operating range between 99 psi (683 kPa) and 130 psi (896 kPa). Air supply outside this range can result in degraded or complete loss of transmission engagement and shift capabilities.

Air Quality

Clean dry air is required for the transmission system to shift properly. The Endurant transmission air supply is required to meet or exceed ISO 8573-1:2010 7.3.4. The vehicle air system supplying the transmission shall use a high quality, commercially available oil coalescing air dryer. Air quality for solid contamination shall meet a minimum of ISO 8573 Class 7. Air quality for water contamination shall meet a minimum of ISO 8573-1 Class 3. Air quality for oil contamination shall meet a minimum of ISO 8573-1 Class 4.

Notice
Air additives such as alcohol devices should not be permitted to enter the transmission air supply. Additives could cause damage to air system components, which could lead to degraded transmission performance.

Note: Reference Endurant HD Automated Transmission and Clutch System TRIG0950, Section 6: Pneumatic System Requirements for additional information.

Caution
Vehicle air quality is important for transmission system operation. Failure to follow the vehicle air system maintenance requirements may result in transmission component damage i.e., MTM contamination and voids transmission warranty. Refer to OEM and/or vehicle air system manufacturer guidelines for vehicle air and filter system maintenance.