HYDRAULIC AR 4455797 - Caterpillar

Removal Procedure
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed.Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death.Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. 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 to collect and contain fluids in Caterpillar machines.Dispose of all fluids according to local regulations.
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Use suitable lifting device to support the weight of second stage conveyor (1). The weight of second stage conveyor (1) is approximately 2268 kg (5000 lb).
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Disconnect two hose assemblies (2) and two hose assemblies (3).
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Remove hoses (3) from clamp assemblies (4).
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Remove cotter pin (8) and remove pin (10). Place cable (9) out of the way.
Remove retaining clip (5). With the assistance of another person remove pin (6) and place cylinder (7) on top of conveyor (1).
Repeat step 4 and step 5 for the opposite side of machine.
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Disconnect two hose assemblies (11). Disconnect hose assembly (12).
Remove hoses from clamp assembly (13) and clamp assembly (14).
Lower front end of second stage conveyor (1) to the ground placing second stage conveyor (1) on suitable cribbing.
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Use suitable lifting device to support opposite end of second stage conveyor (1). The weight of second stage conveyor (1) is approximately 2268 kg (5000 lb).
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Remove three bolts (15) and shield (16). Disconnect harness assembly (17) and harness assembly (18).
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Disconnect hose assembly (19), hose assembly (20), and hose assembly (21).
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Remove four bolts (22). Repeat process for opposite side of machine.
Lower second stage conveyor (1) to the ground placing second stage conveyor on suitable cribbing.Installation Procedure
Install second stage conveyor (1) in the reverse order of removal.