FILTER ELEMENT AS-AIR 9Y3879 - Caterpillar

Personal injury or death can result from machine articulation or movement.Machine frames can move and a person can be crushed.Connect the steering frame lock link between the front and rear frames before working on machine.
Sudden movement or accidental starting of the machine can cause personal injury or death to persons on or near the machine.To prevent personal injury or death, perform the following:Park the machine on a smooth, level surface.Lower the work tool to the ground and engage the parking brake.Stop the engine and remove the key.Block the wheels and install the steering frame lock.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Table 1
Required Tools    
Part Number     Description     Quantity    
8T-9208     Probe Assembly     1    
8T-9190     Fluid Sampling Bottle     1    The hydraulic oil in this system is SAE 10. If the hydraulic oil becomes contaminated, premature component failure could result. Contaminated hydraulic oil can also contribute to overheating.Use the following procedure in order to sample the hydraulic oil.
Install the steering frame lock in the LOCKED position.
Start the engine and run the engine at high idle. Allow the oil temperature to reach the normal operating temperature.
Operate the machine for a few minutes before you obtain the oil sample. This will thoroughly mix the oil for a more accurate sample.
Lower the work tool to the ground.
Turn the engine start switch to the OFF position.
Move all control levers and brake pedals through all positions in order to release any pressure in the hydraulic system.
In order to release the pressure in the hydraulic tank, press and hold the plunger on the breaker relief valve.Note: The breaker relief valve is located on top of the hydraulic tank.Reference: For additional information about the release of hydraulic oil pressure, refer to Testing and Adjusting, "System Pressure - Release" for the machine that is being serviced.
Ensure that the control levers are in the HOLD position.
Illustration 1 g00931202
Location of the Oil Sampling PortNote: The oil sampling port is located on the left side of the machine under the hydraulic tank. In order to access the oil sampling port, the hood for the engine must be raised.
Purge the hydraulic oil sampling port (4). Insert an 8T-9208 Probe Assembly into hydraulic oil sampling port (4) .Note: Use approximately 150 mm (6 inch) length of tube on the end of the probe. Drain approximately 100 mL (4 fl oz) of oil into a container for disposal. This will clean out the sampling port so that a good oil sample may be obtained.Reference: Refer to Special Publication, PEHP6001, "How To Take A Good Oil