Service Manual

Engine Testing (In Chassis) ISB, ISBe and QSB (Common Rail [...]
Page 14-24 Section 14 - Engine Testing - Group 14
To buy Cummins Parts and Service Manuals, Training Guides, or Tools go to our website at https://store.cummins.com
Remove all test instrumentation.
Remove the engine from the dynamometer.
NOTE: If the engine is to be stored temporarily and does
not have permanent-type antifreeze, it is necessary to
drain all coolant. Refer to the Operation and Maintenance
Manual, ISB (4 cylinder) and ISB
e
(4 and 6 cylinder)
Engines Bulletin .
Prepare the engine for engine painting. Refer to
Procedure 000-007
Engine Testing (In Chassis) (014-008)
Setup
The setup for dynamometer function is used to prepare
the attached electronic control module (ECM) for
advanced diagnostic tests that are run on the
dynamometer. For purposes of this test, the maximum
engine speed without VSS, the maximum vehicle speed in
top gear, and the maximum vehicle speed in lower gear
are set to their maximum values. The idle shutdown
feature is disabled. All of these values are automatically
reset to their previous values when the engine keyswitch
is in the OFF position.
Settings
Maximum Engine Speed without VSS: For testing
purposes, this speed is temporarily set to the maximum
value allowed. Maximum Engine Speed without VSS:
3000 rpm
Maximum Vehicle Speed in Top Gear: For testing
purposes, this speed is temporarily set to the maximum
value allowed. Maximum Vehicle Speed in Top Gear:
120 mph
Maximum Vehicle Speed in Lower Gear: For testing
purposes, this speed is temporarily set to the maximum
value allowed. Gear-down Protection (heavy engine
load): 120, Gear-down Protection (light engine load):
120
Idle Shutdown: This feature is temporarily disabled for
testing purposes.
Some J1939 electronic subsystems must be disabled.
The user has the ability to enable or disable the J1939
datalink with the service tool.