426‑07‑31111 A/C Compressor for Komatsu WA600‑6 WD600‑6 HD325‑8 HD405‑8
426‑07‑31111 is an air‑conditioning compressor assembly for Komatsu large wheel loader, wheel dozer and off‑highway dump truck. As the core component of cabin air‑conditioning system, this AC compressor compresses refrigerant to realize cabin cooling function, provides comfortable operating environment for drivers under high‑temperature mining and construction conditions.
Heavy‑duty machinery operates continuously in open‑pit mines, quarry sites and high‑temperature outdoor working zones. Long‑time vibration, high‑temperature environment and dust erosion may cause compressor internal wear, seal leakage, abnormal noise or complete failure. A faulty air‑conditioning compressor will disable cabin cooling, affect operator working efficiency and accelerate aging of surrounding air‑conditioning pipeline components.
We provide full‑range air‑conditioning compressors, condensers and related accessories for Komatsu large loaders, wheel dozers and mining dump trucks, support accurate part‑number matching.
Strict source screening and pre‑shipment inspection
All goods are procured from formal qualified domestic supply channels. Before dispatch, we inspect appearance, pulley rotation performance, sealing condition and mounting dimension to filter defective products and ensure stable cooling performance on site.
Ready stock support for cabin system components
Air‑conditioning compressors are common maintenance consumables for heavy‑duty mining machines. We keep available stock to support urgent on‑site repair and reduce equipment downtime.
Stable cost advantage without multi‑level middlemen
Backed by reliable first‑hand domestic supply resources, we deliver standard‑spec Komatsu replacement spare parts with competitive pricing for global mining contractors and repair workshops.
Mature global export execution
We serve mining fleets, service dealers and engineering contractors across more than 60 countries. We complete export documentation, product marking and standard export carton packing for cross‑border shipment.
Pre‑sales compatibility confirmation service
If you have concerns about part matching, provide your machine serial number, our technical team will finish fitment verification within 24 hours and prevent wrong‑part ordering.
Packaging
426‑07‑31111 compressor is protected with anti‑rust treatment. Pulley and connector surfaces are wrapped with shock‑resistant bubble padding to avoid scratch and collision damage during transit. The unit is securely fixed inside sturdy export carton. Outer carton is clearly marked with part number for convenient inventory management and customs clearance.
Shipping
Sea freight is recommended for bulk spare‑part orders; air freight can be arranged for special urgent repair demand. For in‑stock goods, shipment will be arranged within 7‑15 working‑days after payment confirmation. Complete packing list, tracking information and full set of export documents will be provided for worldwide delivery.
FAQ
Q1: Which machines and engines does 426‑07‑31111 fit?
Q2: What are common failure signs of AC compressor?
Abnormal running noise, refrigerant leakage, cabin no‑cooling output, pulley jamming. Timely replacement can avoid secondary damage to air‑conditioning pipelines.
Q3: What is your delivery lead‑time?
In‑stock goods ship within 7‑15 working days. If out‑of‑stock, we will confirm exact production cycle with you before order confirmation.
Q4: What does warranty cover?
6‑month warranty covers manufacturing‑related defects. Damage caused by improper installation, bad refrigerant filling, onsite impact and normal component wear is excluded from warranty scope.
Q5: How can I get quotation for 426‑07‑31111 compressor?
Send us part number, purchase quantity and delivery destination, our sales team will send detailed quotation within 24 hours.
Installation Guide
Cut off machine power before installation, release residual refrigerant inside original air‑conditioning circuit.
Inspect new compressor for shell damage, pulley jam and connector deformation, reject defective unit.
Align compressor mounting holes accurately, install bolts and fasteners and tighten according to torque requirement.
Connect air‑conditioning pipeline connectors, replace sealing rings, fill qualified refrigerant and compressor oil following service manual requirement.
After installation, start machine and test air‑conditioning cooling function, check for refrigerant leakage at each joint.
Maintenance Tips
Regularly inspect compressor pulley tension, belt wear and pipeline sealing condition during daily maintenance.
Avoid long‑time overload operation of air‑conditioning system under extreme high‑temperature environment.
When replacing AC compressor, it is recommended to replace drying filter together, clean the whole refrigeration circuit to extend service life.
Inspect relevant belts, tensioner and pipeline assembly together, renew heavily‑worn supporting components as required.
