HYDRAULIC AR 2397165 - Caterpillar

Removal Procedure
Start By:
Remove the bucket. Refer to Disassembly and Assembly, "Bucket - Remove".
Start the machine. Fully retract the bucket cylinder. Secure the linkage to the stick.
Illustration 1 g00686746
Fully extend the stick cylinder. Lower the stick to the floor. Block the end of the stick that connects to the boom. Stop the engine.
Illustration 2 g00686722
Place a wood block under stick cylinder (1).
Illustration 3 g00686768
Remove retaining bolt (2) from pin assembly (3). Note: Shims are located between the stick cylinder and the stick at the pin bore.
Remove pin assembly (3) and the spacer from the stick.
Start the machine. Fully retract the stick cylinder. Stop the engine.
Remove the shims that are located between the stick cylinder and the stick at the pin bore.
Illustration 4 g00690283
Position wood blocks between the stick and the boom, as shown.
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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
At operating temperature, the hydraulic oil is hot and under pressure. Hot oils can cause burns.To prevent possible personal injury, release the pressure in the work tool hydraulic circuit (boom, stick, bucket, and swing), travel circuits, and the hydraulic oil tank at the filler cap before any hydraulic lines or components are disconnected or removed.Remove the filler cap only when the engine is stopped and the filler cap is cool enough to touch.
Release hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
Illustration 5 g00687835
Remove retaining bolt (4) from pin assembly (5).
Keep all parts clean from contaminants.Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components.To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly.Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.
Note: A hydraulic oil sample should be obtained before any maintenance is performed in order to establish the system contaminant level. Refer to Fluid Analysis Laboratory Guide, SEBF3116, "Obtaining an Oil Sample for S O S Analysis". Refer to Operation and Maintenance Manual, "Sampling Interval and Location of Sampling Valve" for the correct location.
Disconnect all hose assemblies (6). Note: Shims are located between the boom and the stick at the pin bore.
Start the machine. Raise the boom away from the stick. Note: The wood blocks that are located between the stick and the boom will fall when the boom is raised.
Swing the machine so that the boom may be lowered to the floor. Lower the boom to the floor. Stop the engine.
Remove the shims that are located between the stick and the boom at the pin bore.