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General| Brand | Allison Transmission |
|---|---|
| Model | MT 644 |
| Category | Microphone system |
| Language | English |
Explains the meaning and purpose of Warning, Caution, and Note indicators used in the manual.
Details the function and components of the torque converter, including pump, turbine, and stator.
Describes the purpose and operation of the lockup clutch in AT, MT, and HT transmissions.
Presents a table detailing shift selector positions for various AT, MT, and HT transmission models.
Explains the Park, Reverse, Neutral, and Drive positions for specified AT, MT, and HT transmission models.
Explains the Park, Reverse, Neutral, and Drive positions for HT 750DR and HT 750DR DB transmissions.
Provides guidance on operating the transmission in cold weather, including preheating requirements.
Lists common conditions that can lead to major transmission problems if not addressed promptly.
Emphasizes the critical role of maintaining the correct transmission fluid level for lubrication and cooling.
Details the procedure for checking transmission fluid level when the fluid is cold, including temperature guidelines.
Details the procedure for checking transmission fluid level when the fluid is hot, including temperature guidelines.
Details how to examine drained transmission fluid for signs of dirt, coolant, or metal particles.
Explains that metal particles in fluid indicate transmission damage and recommends specific actions.
Describes the procedure and consequences of coolant leaking into the transmission hydraulic system.
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