803074990 Brake Valve Group XCMG XDE130 Electric driving dump truck spare parts

The 803074990 brake valve group can effectively solve problems such as brake pedal rebound sticking, excessive brake pressure relief, parking lock failure, sludge blockage in the valve body cavity, oil leakage due to valve core seal wear, oil leakage due to valve body interface cracking, weak braking under heavy load, poor brake return, malfunction of opening and closing at high and low temperatures, leakage in the valve body under bumpy conditions, loss of brake pressure control, and sluggish start-stop braking. It is suitable for replacing old brake valve assemblies, maintaining the entire vehicle brake hydraulic circuit, original equipment manufacturer (OEM) parts, brake hydraulic circuit pressure control rectification, repair of driving and parking brake faults, and optimization and rectification of brake circuit opening and closing. The product is made of thickened high-pressure cast aluminum valve body and multiple sets of composite high-pressure resistant sealing valve cores. It has excellent oil circuit pressure control and opening and closing performance, and has the characteristics of oil circuit opening and closing, graded pressure distribution, locking and pressure holding, anti-seepage and corrosion resistance, oil resistance and high and low temperature resistance, anti-jamming and deformation resistance, and long-term wear resistance. It is suitable for heavy-duty operation braking of engineering machinery, high-frequency start-stop braking, outdoor day and night temperature difference working conditions, mud, water and oil pollution corrosion, and long-term parking locking conditions.

Core technical parameters:

– Product Model: 803074990
– Product Name: Brake Valve Group
– Material specifications: Thickened high-pressure integrated cast aluminum valve body, pressure-resistant, crack-resistant, and impact-resistant, with built-in original wear-resistant integrated valve core and multi-layer composite anti-internal leakage sealing components.
– Processing technology: Original factory one-piece die casting precision machining, internal oil circuit mirror honing noise reduction, oil circuit interface anti-leakage precision machining, original vehicle pipeline hole position direct installation adaptation.
– Performance and operating condition adaptability: The rated oil circuit pressure meets the standard, the valve core opens and closes quickly, and it is suitable for the bidirectional oil circuit control conditions of engineering machinery for driving brake and parking pressure maintenance.
– Structural features: Original factory integrated brake circuit structure, pressure relief braking is linear and smooth, strong sealing and locking performance, avoiding brake weakness, internal pressure relief, and vehicle rollover faults.

This product undergoes rigorous quality control, including hydraulic circuit opening and closing verification, full-area airtightness and pressure holding test, high and low temperature opening and closing durability test, valve body pressure resistance and explosion-proof test, and vehicle braking circuit compatibility verification, fully meeting original factory assembly standards. It boasts high compatibility and is ready to use immediately after installation. It completely resolves potential issues such as brake opening and closing failure, internal hydraulic leakage, and insufficient parking pressure. It precisely regulates the pressure of the entire vehicle’s brake hydraulic circuit, controls the brake pedal feel, balances wheel-side braking force, avoids safety hazards related to driving brakes, ensures the reliability of both driving and parking brakes, and extends the service life of the accumulator, brake lines, and distributor valve body—the entire brake hydraulic circuit component set.

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