Service Manual

ISB, ISBe and QSB (Common Rail [...] Engine Run-in (Engine Dynamometer)
Section 14 - Engine Testing - Group 14 Page 14-21
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Move the throttle lever to its fully opened position, and
increase the dynamometer load until the engine speed is
at torque peak rpm. Operate the engine at this speed and
load level for 10 minutes or until the blowby becomes
stable within specifications.
Check all gauges, and record the data.
Reduce the dynamometer load until the engine speed
increases to the engine's rated rpm.
Operate the engine at rated rpm for 5 minutes.
Check all gauges, and record the data.
CAUTION
Shutting off the engine immediately after operating at
full load will damage the turbocharger and internal
components. Always allow the engine to cool before
shutting it off.
Remove the dynamometer load completely, and operate
the engine at 800 rpm for 3 to 5 minutes. This period will
allow the turbocharger and other components to cool.
Shut off the engine.