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General| Brand | Allison Transmission |
|---|---|
| Model | AT 542N |
| Category | Microphone system |
| Language | English |
Explanation of the purpose and meaning of WARNING, CAUTION, and NOTE labels in the manual.
Explains the critical role of correct fluid level for cooling, lubrication, and hydraulic power.
Essential safety warnings for performing the transmission fluid level check.
Cautionary advice on preventing dirt and foreign matter from entering the transmission fluid system.
Steps for performing a cold fluid level check, including engine operation and temperature.
Steps for performing a hot fluid level check, including operating temperature requirements.
Warning against using containers that held antifreeze/coolant for transmission fluid.
Specifies recommended fluids (DEXRON®-III, C-4) and viscosity grades for different applications.
Warning about disregarding minimum fluid temperature limits and their impact on transmission.
Guide for determining the frequency of fluid and filter changes based on service severity.
Steps for draining transmission fluid, including examining drained fluid for contamination.
Steps for refilling the transmission after fluid and filter change.
Interpreting metal particles in fluid as an indicator of internal transmission damage.
Action required for coolant leaks into the hydraulic system to prevent serious damage.
Warning against installing an auxiliary filter in the AT 500R primary cooler circuit due to retarder effectiveness.
Explains the stall test for diagnosing malfunctions and the cool-down check for fluid temperature data.
Critical safety precautions for conducting the transmission stall test to prevent injury.
Cautions regarding stall duration, fluid temperature, and cooling between tests.
Analysis of stall speed results to diagnose engine or transmission problems.
Warning regarding careful separation of the transmission from the engine to protect the torque converter.
Warning against polishing oil seal surfaces to prevent leakage; advice on lubrication and installation.
Warning against using hammers for output flange installation to prevent internal damage.
Warning about using correct selector lever types for second-neutral models to ensure proper operation.
Caution against overtightening the selector lever retaining nut to prevent shaft thread damage.
Warning against using cork or soft gaskets for PTO mounting; use manufacturer-recommended parts.
CAUTION: Handle transmission carefully after removing torque converter strap.
Specifies required bolt penetration depth for AT 540/542/545/1500 and AT 543 series.
Comprehensive list of torque specifications for various transmission installation components.
Verifying selector lever alignment and neutral safety switch operation during road test.
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