Engine Testing (Chassis Dynamometer) (014-002)
B3.9 and B5.9 Series Engines
Section 14 - Engine Testing - Group 14
NOTE: If a sudden increase in blowby occurs or if blowby
exceeds the maximum allowable limit during any run-in
step, return to the previous step and continue the run-in. If
blowby does not reach an acceptable level, discontinue the
run-in and determine the cause.
NOTE: Avoid long idle periods. Operate the engine at low
idle only long enough (3 to 5 minutes) to check for correct
lubricating oil pressure and any fuel, lubricating oil, water,
or air leaks.
Do not allow the engine speed to exceed 1000 rpm
before run-in. The internal components can be
Do not operate the engine at idle speed longer than
specified during engine run-in. Excessive carbon for-
mation can cause damage to the engine.
Do not shut off the engine immediately after the last
step of the run-in is completed. Allow the engine to cool
by operating at low idle for a minimum of 3 minutes to
avoid internal component damage.