PLUG AS 3309723 - Caterpillar

Removal Procedure
Start By:
Install the wheel chocks. Refer to Disassembly and Assembly, "Wheel Chock (Front and Rear) - Remove and Install"
Install the retaining cable. Refer to Disassembly and Assembly, "Truck Body Retaining Cable - Remove and Install".
Release the pressure from the air system. Refer to Disassembly and Assembly, "Air Tanks (Brake) - Purge".
Release the pressure from the hydraulic system. Refer to Disassembly and Assembly, "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, PERJ1017, "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.
The space between the body and the frame becomes a zero clearance area when the body is lowered. Failure to install the retaining cable can result in injury or death to personnel working in this area.
At operating temperature, the hydraulic tank is hot and under pressure.Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure.
In order to prevent possible personal injury, release the air pressure from the air tank before disconnecting any components of the air system.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: Put identification marks on all hose assemblies, on all tube assemblies and on all wire harnesses for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss and this helps to prevent contaminants from entering the system.
Turn the power disconnect switch to the OFF position.
Illustration 1 g01593378
Disconnect hose assembly (1). Disconnect valve assembly (2).
Illustration 2 g01593380
Disconnect harness assembly (3). Disconnect hose assembly (4).
Illustration 3 g01593381
Remove bolts (5). Use two people in order to remove air/hydraulic cylinder (6). The weight of air/hydraulic cylinder (6) is approximately 25 kg (55 lb).