
SEBU8219-01 103
Maintenance Section
Engine Protective Devices - Check
3. Stop the engine
and allow the oil to drain back to
thesumpforaminimumoftenminutes.
4. Remove the oil
level gauge in order to check the
oil level. Maintain the oil level between the “ADD”
and “FULL” marks on the oil level gauge.
i00626013
Engine Protective Devices -
Check
SMCS Code: 7400-535
Alarms and shutoffs must function properly. Alarms
provide timely warning to the operator. Shutoffs help
to prevent damage to the engine. It is impossible
to determine if the engine protective devices are
in good working order during normal operation.
Malfunctions must be simulated in order to test the
engine protective devices.
A calibration check of the engine protective devices
will ensure that the alarms and shutoffs activate
at the setpoints. Ensure that the engine protective
devices are functioning properly.
NOTICE
During testing, abnormal operating conditions must be
simulate d.
The tests must be performed correctly in order to pre-
vent possible damage to the engine.
To prevent damage to the engine, only authorized
service personnel or your Caterpillar dealer should
perform the tests.
Visual Inspection
Visually check the condition of all gauges, sensors
and wiring. Look for wiring and components that
are loose, broken, or damaged. Damaged wiring
or components should be repaired or replaced
immediately.
i02562758
Engine Valve Lash -
Inspect/Adju
st
SMCS Code: 1102-025
NOTICE
Only qualified
service personnel should perform this
maintenance. Refer to the Service Manual or your
Caterpillar dealer for the complete valve lash adjust-
ment procedur
e.
Operation of Caterpillar engines with improper valve
adjustments c
an reduce engine efficiency. This re-
duced efficiency could result in excessive fuel usage
and/or shortened engine component life.
The initial valve lash adjustment on new engines,
rebuilt engines, or remanufactured engines should
be performe
datthefirst oil change. The initial valve
lash adjustment on new engines, rebuilt engines, or
remanufactured engines must be performed before
thefourtho
il change, or at the fourth oil change. The
adjustment is necessary due to the initial wear of
the valve train components and to the seating of the
valve trai
n components.
This maintenance is part of a lubrication and
preventiv
e maintenance schedule in order to help
provide maximum engine life.
Ensure that the engine can not be started while
this ma in
tenance is be ing performed. To help pre-
vent possible injury, do not use the starting motor
to turn the flywheel.
Hot engine components can cause burns. Allow
additional time for the engine to cool before mea-
suring/a
djusting valve lash clearance.
To obtain an accurate measurement, allow the valves
to cool be
fore this maintenance is performed.
The following components should be inspected and
adjuste
d when the valves are inspected and adjusted.
•
Valve actuators
•
Injectors
•
Compress
ion brakes
Refer to Systems Operation, Testing and Adjusting,
“Engine
ValveLash-Inspect/Adjust”inyourservice
manual for more information.