Excavator control valve accumulator does not work

An improperly charged accumulator may give indications of a problem with the check valve. Stop the engine. Release the pressure from the pilot hydraulic system. Refer to Testing and Adjusting, “Hydraulic System Pressure – Release”. The problem is the boom, bucket, and crowd operations are slow or barely work, unless you operate a function on the opposite joystick at the same time. The left side drive track is stuck but the right seems to move as long as you are operating another function. It appears the control block is. In order to check the amount of charge in an accumulator, the accumulator must be at the same temperature as the surrounding air. Note: The temperature of the accumulator may change as the accumulator is being charged due to the expansion or compression of the nitrogen charge. It may be necessary. The charge valve opens to allow flow into the swing accumulators during a swing stall or swing braking operation. The discharge valve opens to allow flow from the accumulator to the swing workport during swing acceleration or swing stall. During a 100% swing stall operation with fine swing. These could be symptoms of problems with the hydraulic accumulator. This inconspicuous, canister-like component is actually a "bomb" charged with energy that performs several extremely important roles in the system. Its failure not only worsens operator comfort but can lead to serious damage. The. The accumulator is a device that stores and controls the pressure of the oil circuit. It is installed between the main pump and the PPC valve (control handle). Its function is to keep the pressure of the control oil circuit (low pressure oil circuit) stable and when the engine is turned off, the. There are 2 large high pressure accumulators and 1 small low pressure accumulator for the swing circuit. Usually the problem is for the high pressure accumulators and I don't recommend anyone that doesnt have the correct schematics and T&A procedure to work on them because they store alot of energy.