PIVOT AS-FRAME 1426941 - Caterpillar

At operating temperature, the hydraulic oil tank is hot and under pressure. Hot oil can cause burns. Remove the filler cap on the hydraulic oil tank only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Be sure all the hydraulic pressure is released before any fittings, hoses or components are loosened, tightened, removed or adjusted.
Do not remove any valve, hydraulic fitting or valve core, nor disassemble any parts until pressure has been released. Failure to release pressure can cause personal injury or death.
The following steps are to release the pressure in the system:a. Shut off engine.b. With operator in seat and bucket on ground, engage selector valve (pilot control) and actuate an implement control lever about ten times to release pressure in hydraulic system.c. Press the relief valve button on the hydraulic tank breather to release the tank pressure. Do not release the nitrogen pressure from the accumulator assembly unless the unit is to be disassembled. Put identification on all lines, hoses, wires and tubes for installation purposes. Cap and plug all lines, hoses and tubes to prevent foreign material from entering the system.1. Disconnect hose assembly (2) from the manifold & relief valve. Put a plug in the end of the hose assembly and a cap on the fitting to prevent the loss of oil and to keep dirt and debris out of the hydraulic system.2. Remove accumulator assembly (1) from the track roller frame. Install the accumulator assembly in the reverse order of removal. Prior to installing the accumulator assembly, check the condition of the O-ring seals used in the end of the hose assembly (2). If the seals are worn or damaged, use new parts for replacement. Check all components for wear or damage and replace if necessary. Apply 1U-6396 O-ring Compound to all O-ring seals prior to installation, if applicable.3. Check the oil level in the hydraulic oil tank. Fill the hydraulic oil tank to the correct level. See the Operation & Maintenance Manual for the correct filling procedure.