07011-00095 0701100095 Aramid Fiber ACM HNBR Metal Composite Full Gasket Kit for Komatsu WA Series Wheel Loader Steering Priority Valve Overhaul Maintenance D40AM-5

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5. FAQ

Q: Which Komatsu heavy wheel loader models are compatible with this 07011-00095 steering priority valve full gasket kit, and what complete sealing gaskets are included inside this hydraulic valve overhaul package?
A: This OEM-spec full gasket kit is exclusively customized for Komatsu WA380-6, WA430-6, WA470-6, WA480-5 heavy wheel loaders, fully matched to the chassis-mounted steering priority flow control valve. This valve automatically prioritizes hydraulic oil supply to the steering circuit during bucket lifting and loading, ensuring sensitive steering response under full bucket heavy load; the complete gasket set seals all split mating surfaces of the valve, including main valve housing, spool valve body, end caps, auxiliary flow flanges and oil pipeline joints. After full valve disassembly and maintenance, it completely eliminates internal cross-circuit oil stringing and external hydraulic oil leakage, stabilizes steering priority flow pressure, and avoids delayed steering, large turning radius and bucket jitter during stockpile loading, port bulk stacking and sand quarry transfer operations. The kit contains all sealing accessories required for one full valve split overhaul, including thick aramid fiber composite valve housing gaskets, ultra-thin ACM micro valve body precision shims, HNBR elastic O-rings for end caps, galvanized anti-corrosion metal thin shims, small flange sealing washers and integrated bottom cover sealing gaskets. All gaskets are sorted and packed into independent labeled plastic pouches grouped by installation positions, so maintenance staff do not need to purchase scattered single gaskets from multiple suppliers, greatly cutting equipment downtime on aggregate loading yards, municipal construction waste transfer stations and river sand stock sites.

Q: What unique core performance advantages does this four-material composite gasket combination bring to wheel loader steering priority valve compared with ordinary low-cost single paper gasket kits?
A: The WA series wheel loader steering priority valve operates under long-term alternating high-temperature hydraulic oil soaking and frequent loading & steering compound vibration impact every workday, enduring continuous flow switching pressure fluctuations generated by simultaneous bucket lifting and steering, long-term immersion in high-temperature hydraulic oil mixed with sandstone fine abrasive particles, and year-round erosion of muddy splash water seeping into narrow valve assembly gaps. High-density aramid fiber composite main housing gaskets have superior compression rebound recovery and high-temperature hydraulic oil corrosion resistance compared with low-density paper gaskets; they will not shrink, crack or lose original sealing thickness after long-term high-temperature oil soaking and repeated disassembly and assembly cycles. Ultra-thin ACM micro valve body shims feature ultra-uniform thickness and excellent anti-oil-swelling performance, which can precisely control tiny internal flow channel clearances and effectively block internal cross-circuit oil bypass inside the valve body. HNBR circular sealing rings maintain stable soft elasticity under freezing outdoor winter construction, and will not harden and lose sealing tightness under sub-zero low-temperature environments. Galvanized metal thin shims have stable anti-compression deformation performance, and will not form permanent indentations under long-term bolt pre-tightening clamping pressure. This multi-material matching forms a multi-layer full-surface anti-leakage sealing protection system for all valve split joints, extending the overall service life of this gasket kit by more than 77% compared with traditional single paper gasket kits.

Q: What obvious color and structural visual differences help maintenance technicians quickly distinguish each type of gasket inside this WA series loader steering priority valve full gasket kit?
A: Large valve housing aramid fiber composite gaskets are light gray matte sheet materials, with irregular special outlines precisely cut according to the valve housing split surface, thick texture with compact uniform fiber texture on cross-section. Ultra-thin ACM micro valve body gaskets are dark black ultra-thin flexible sheets, with tiny precise irregular outlines matching each internal flow channel, smooth surface without fiber grain texture. HNBR rubber O-ring gaskets are matte jet black elastic circular rings of multiple calibers, soft and stretchable with consistent uniform round cross-section. Galvanized metal sealing shims are silver-gray thin metal sheets, rigid and deformation-resistant, with regular circular or square outlines. Integrated bottom cover sealing gaskets are medium-thick composite fiber sheets with one-piece rectangular outline, evenly pre-drilled bolt fixing holes at each mounting position. All these styles can be clearly distinguished from PU buffer rings, PTFE anti-extrusion backup rings and single rubber oil seals used on bulldozer steering valves, dump truck suspension cylinders and grader transmission assemblies. Each gasket is printed with position matching marks dedicated to WA380/WA430/WA470/WA480 steering priority valve, convenient for fast sorting and accurate matching during on-site hydraulic valve overhaul.

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