TUBE AS 1974488 - Caterpillar

Removal Procedure
Start By:
Release the hydraulic system pressure. Refer to Disassembly and Assembly , " Hydraulic System Pressure - Release".
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.
Illustration 1 g02364096
Remove bolts (2) and plate (1) .
Illustration 2 g03426027
Note: Do not release the nitrogen from the hydraulic accumulator unless the unit will be disassembled.
Remove hydraulic accumulator (3) by turning the nut that is located at the top of the accumulator (3) . Remove the O-ring seal from the accumulator (3) .Installation Procedure
Install accumulator (3) in the reverse order of removal.