CAT 3412C - Engine Oil and Filter Change; Engine Oil and Filter Replacement

NOTICE
Always use a designated pump for oil sampling, and
use a separate designated pump for coolant sam-
pling. Using the same pump for both types of sam-
ples may contaminate the samples that are being
drawn. This contaminate may cause a false analysis
and an incorrect interpretation that could lead to con-
cerns by both dealers and customers.
If the engine is not equipped with a sampling valve,
use the 1U-5718 Vacuum Pump. The pump is
designed to accept sampling bottles. Disposable
tubing must be attached to the pump for insertion into
the sump.
For instructions, see Special Publication, PEGJ0047,
“How To Take A Good S·O·S Oil Sample”. Consult
your Cat dealer for complete information and
assistance in establishing an S·O·S program for your
engine.
i05264147
Engine Oil and Filter - Change
SMCS Code: 1318-510; 1348-044
Hot oil and hot components can cause personal
injury. Do not allow hot oil or hot components to
contact the skin.
Do not drain the oil when the engine is cold. As the oil
cools, suspended waste particles settle on the
bottom of the oil pan. The waste particles are not
removed with the draining cold oil. Drain the
crankcase with the engine stopped. Drain the
crankcase with the oil warm. This draining method
allows the waste particles that are suspended in the
oil to be drained properly.
Failure to follow this recommended procedure will
cause the waste particles to be recirculated through
the engine lubrication system with the new oil.
Drain the Engine Oil
After the engine has been run at the normal
operating temperature, stop the engine. Use one of
the following methods to drain the engine crankcase
oil:
• If the engine is equipped with a drain valve, turn
the drain valve knob counterclockwise in order to
drain the oil. After the oil has drained, turn the
drain valve knob clockwise in order to close the
drain valve.
• If the engine is not equipped with a drain valve,
remove the oil drain plug in order to allow the oil to
drain. If the engine is equipped with a shallow
sump, remove the bottom oil drain plugs from both
ends of the oil pan.
After the oil has drained, the oil drain plugs should be
cleaned and installed.
Replace the Oil Filter
NOTICE
Cat oil filters are built to Caterpillar specifications.
Use of an oil filter not recommended by Caterpillar
could result in severe engine damage to the engine
bearings, crankshaft, etc., as a result of the larger
waste particles from unfiltered oil entering the engine
lubricating system. Only use oil filters recommended
by Caterpillar.
1. Remove the oil filter with a 1U-8760 Chain
Wrench.
2. Cut the oil filter open with a 175-7546 Oil Filter
Cutter Gp. Break apart the pleats and inspect the
oil filter for metal debris. An excessive amount of
metal debris in the oil filter may indicate early wear
or a pending failure.
Use a magnet to differentiate between the ferrous
metals and the nonferrous metals that are found in
the oil filter element. Ferrous metals may indicate
wear on the steel and cast iron parts of the engine.
Nonferrous metals may indicate wear on the
aluminum parts, brass parts, or bronze parts of the
engine. Parts that may be affected include the
following items: main bearings, rod bearings,
turbocharger bearings and cylinder heads.
Due to normal wear and friction, it is not
uncommon to find small amounts of debris in the
oil filter. Consult your Cat dealer in order to
arrange for a further analysis if an excessive
amount of debris is found in the oil filter.
SEBU7125-13
123
Maintenance Section
Engine Oil and Filter - Change