Service Manual

Stall Speed Test ISB, ISBe and QSB (Common Rail [...]
Page 5-36 Section 5 - Fuel System - Group 05
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CAUTION
Do not exceed 120°C [248°F] converter oil
temperature. Overheating can result and converter
damage can occur. If the oil temperature exceeds
120±C [248°F], put the transmission in neutral, and
operate the engine until the oil temperature is below
120°C[248°F]. Check the converter oil level.
The following equipment is needed for this check:
• Stopwatch
• Equipment manufacturer's stall speed and time-to-stall
specifications.
Place the gear selector in the highest gear or full forward.
Make sure the vehicle has good brakes and air pressure
in the brake system.
NOTE: The brakes must prevent the vehicle from moving
when the engine is at full throttle. Engage the vehicle
brakes to keep the vehicle from moving.