Doosan 474-00055 Hydraulic Filter HF28910 14509379 KRJ15830

Applications:

SUMITOMO  SC 400SH 200SH 200SH 200SH 200-2SH 200-3SH 200 LPC-3SH 220SH 220SH 220SH 220-2SH 220-3SH 225 X-3SH 240-3SH 290-3SH 300-3SH 330-3SH 350 HD-3
VOLVO  EC 240 LCEC 290 LC
DOOSAN DAEWOO  DH 450SOLAR 015 PLUSSOLAR 015 SUPER

Professional Doosan 474-00055 Hydraulic Filter HF28910 14509379 KRJ15830

Q: When should I change a Doosan hydraulic filter?

You need to comprehensively judge the timing of replacing the hydraulic filter based on three dimensions: the operating time, working environment, and filter element status of the Doosan equipment. The specific criteria are as follows:

1、 Basic time cycle judgment

1. Replacement after First/Major Maintenance: Heavy equipment such as Doosan excavators must have their hydraulic filters replaced after 250 hours of operation or major maintenance to thoroughly clean system impurities for the first time.
2. Normal operating condition replacement: In ordinary earthwork operation scenarios, the return oil and pilot hydraulic filters should be replaced every 1000 hours of cumulative operation, and the pipeline hydraulic filters should be replaced every 500 hours.
3. Adjustment of high load conditions: In harsh working environments with high dust and continuous heavy loads, the replacement cycle should be compressed to within 180-250 hours to avoid rapid clogging and failure of the filter element.

2、 Instant replacement condition triggered by status

• When the differential pressure indicator of the hydraulic filter turns red, it indicates that the filter element is severely clogged and must be replaced immediately to prevent abnormal pressure in the hydraulic system.
• When the hydraulic oil return filter blockage alarm light on the equipment dashboard lights up, the machine should be stopped immediately to replace the corresponding hydraulic filter.
• When disassembling and inspecting, if the filter paper of the filter element is deformed, severely accumulates carbon, or has too much metal debris attached, it needs to be replaced directly even if the time threshold has not been reached.

3、 Exclusive precautions for Doosan equipment

The hydraulic filter compatible with the Doosan series excavator should be a qualified product that matches the original factory interface. Poor quality filter elements may fail prematurely and may also cause hydraulic pump wear, slow operation, oil temperature rise, and other faults.

Doosan equipment that operates in high-temperature environments for a long time can shorten the replacement cycle by 10% -20% appropriately, ensuring stable operating temperature of the hydraulic system and reducing the probability of overheating alarms.

Q: How many hours does a hydraulic filter last?

The service life of hydraulic filters is not uniformly fixed in hours, and there are clear reference standards for the service life of different types of hydraulic filters under normal working conditions. At the same time, significant fluctuations may occur due to factors such as working conditions and materials

Conventional hourly life of different types of hydraulic filters

• Suction Strainer filter: The service life under normal working conditions is 2000 working hours, and some high-quality fiberglass filter elements can be extended to 3000 hours under clean working conditions.
• Return hydraulic filter: The service life of the first use is 250 working hours, and after replacing the new filter element, it needs to be replaced every 500 working hours.
• High pressure/pilot hydraulic filter: The service life under normal operating conditions is 1000-2000 working hours, and special models adapted to high-pressure hydraulic systems can reach more than 2000 hours.