Allison Transmission determines whether a power complaint is engine or transmission related.Stall Speed – max engine rpm attainable at full throttle, turbine stopped or “stalled.”Use as a troubleshooting procedure only.
Stall Test
Determines whether a power complaint is engine or transmission related.Stall Speed – max engine rpm attainable at full throttle, turbine stopped or “stalled.”Use as a troubleshooting procedure only.Stall Test PreparationCheck and adjust transmission fluid level.Check engine fuel control linkage for proper operation.Check air induction system.Verify smoke controls are functioning properly.Install a tachometer (don’t rely on vehicle tach).Install temp gauge in converter out line.Chock vehicle wheels.Warm sump to normal (160 – 200 degrees F).All accessories off
Vehicle repair guide
Stall Test Cautions
Keep all people clear – away from front, rear or side of vehicle.Never stall test in Reverse or Low (seven-speed models).Never stall longer than 30 seconds without a cool down.Do not allow converter out temp to exceed 300 degrees F.
