WEICHAI Engine Fuel Water Sep Filter 812600081294 612600081294

Part Number: 612600081294
General Models: PL420, 1000424916, FS36267
Applicable Models: Weichai WP10, WP12, WP13, WD615 series (XCMG, Lingong loaders, Sinotruk, Shaanxi Heavy Trucks)
Functions: Fuel coarse filtration, oil-water separation, sedimentation, with water level sensor (alarm)
Voltage: 24V (compatible sensor)
Differences: Does not include electronic pump/heating function (biggest difference from 612600083263)
II. Comparison with 612600083263
Table: Features 612600081294 612600083263
Components Pure filter element + water cup + sensor Integrated electronic pump + heating + filter element
Functions Filtration, oil-water separation, water level alarm Filtration, oil-water separation, alarm, electric oil pump, low-temperature heating

Installation: Replace the original filter element. Replace the entire water-cooling system assembly.

III. Common Faults and Troubleshooting

Engine lack of power, stalling

Causes: Clogged filter element, insufficient oil supply

Solution: Replace the filter element every 500 hours

Water level light constantly on, alarm

Causes: Excessive water accumulation, sensor malfunction

Solution: Drain water from the water reservoir; if ineffective, replace the sensor/filter assembly

Oil leakage, water seepage

Causes: Aging seal ring, cracked water reservoir

Solution: Replace the seal ring or the entire filter assembly

IV. Replacement Points

Direct replacement: PL420 interface is universal, regardless of brand (XCMG/Lingong/Sinotruk universal)

No air purging required after replacement (handled by the upstream electric pump)

Apply diesel lubricant to the seal ring before installation to prevent leakage

Regularly open the bottom drain valve to drain water.