loader Iran

Loader steering valve repair

The steering control valve in Volvo, Komatsu, and Hyundai loaders is a critical component of the hydraulic steering system, responsible for controlling oil flow and pressure to the steering cylinders. These valves are typically high-pressure, double-acting designs capable of withstanding operating pressures between 200 and 260 bar. Internally, they feature pistons, springs, and precisely machined housings with tolerances below 0.05 millimeters, enabling accurate oil flow control and precise steering shaft movement. Selecting the correct valve and maintaining the specified flow rate for each loader model is crucial to prevent vibration and premature wear of hydraulic components.

The mounting location of the steering valve is usually on the outlet path of the hydraulic pump, near the input shaft of the orbital steering unit. This position allows the valve to receive direct hydraulic pressure and transmit force accurately to the steering cylinders. The valve is connected to pressure and return lines using flange couplings and high-pressure-resistant O-rings. Improper alignment or installation can lead to leakage, reduced flow, and increased shaft vibration, shortening the lifespan of the hydraulic components.

The repair process for the steering valve involves disassembling the

Komatsu Wheel Loader WA800-3

The Komatsu WA800-3 wheel loader is equipped with an SAA12V140E-3 diesel engine producing 690 horsepower at 2000 RPM. The engine displacement is 27.0 liters, delivering a maximum torque of 4300 N·m at 1400 RPM. The hydraulic system features a 900 L/min pump with 280 bar working pressure, controlling the boom, bucket, and frame. The frame is made of high-strength steel with a bending resistance of 12,000 N·m. The standard bucket has a capacity of 13 cubic meters and a lift height of 4.2 meters, capable of moving large volumes of heavy materials such as soil, sand, and rock. The hydro-mechanical transmission with 4 forward and 3 reverse gears allows precise speed control up to 40 km/h.

The operating weight of the loader is 130 tons, and its overall length is 14.8 meters, ensuring stability and maneuverability on rough terrain and challenging conditions. Front and rear axles feature independent differential locks with a load capacity of 50 tons. The cabin includes an ergonomic vibration-absorbing seat, air conditioning, and digital controls to enhance comfort and reduce operator fatigue. The dual-circuit hydraulic braking system and adjustable hydraulic steering provide precise control on slopes and rocky environments. Fuel consumption is approximately 140 liters per hour, an

Komatsu Wheel Loader WA600-3

The Komatsu WA600-3 wheel loader is equipped with an SAA6D140E-3 diesel engine producing 360 horsepower at 2000 RPM. The engine displacement is 14.0 liters, delivering a maximum torque of 1550 N·m at 1400 RPM. The hydraulic system features a 420 L/min pump with 250 bar working pressure, controlling the boom, bucket, and frame. The frame is made of high-strength steel with a bending resistance of 4800 N·m. The standard bucket has a capacity of 6.5 cubic meters and a lift height of 3.5 meters, capable of moving large volumes of heavy materials such as sand, soil, and rock. The hydro-mechanical transmission with 4 forward and 3 reverse gears allows precise speed control up to 40 km/h.

The operating weight of the loader is 45 tons, and its overall length is 11.2 meters, ensuring stability and maneuverability on rough terrain and challenging conditions. Front and rear axles feature independent differential locks with a load capacity of 20 tons. The cabin includes an ergonomic vibration-absorbing seat, air conditioning, and digital controls to enhance comfort and reduce operator fatigue. The dual-circuit hydraulic braking system and adjustable hydraulic steering provide precise control on slopes and rocky environments. Fuel consumption is approximately 50 liters per hour, and the

Komatsu WA470-6 wheel loader

The Komatsu WA470-6 wheel loader is equipped with an SAA6D107E-2 diesel engine producing 270 horsepower at 2000 RPM. The engine displacement is 10.5 liters, delivering a maximum torque of 1380 N·m at 1400 RPM. The hydraulic system features a 320 L/min pump with 245 bar working pressure, controlling the boom, bucket, and frame. The frame is made of high-strength steel with a bending resistance of 3750 N·m. The standard bucket has a capacity of 4.8 cubic meters and a lift height of 3.25 meters, capable of moving large volumes of heavy materials such as soil, sand, and rock. The hydro-mechanical transmission with 4 forward and 3 reverse gears allows precise speed control up to 38 km/h.

The operating weight of the loader is 29 tons, and its overall length is 10 meters, ensuring stability and maneuverability on rough terrain and challenging conditions. Front and rear axles feature independent differential locks with a load capacity of 13 tons. The cabin includes an ergonomic vibration-absorbing seat, air conditioning, and digital controls to enhance comfort and reduce operator fatigue. The dual-circuit hydraulic braking system and adjustable hydraulic steering provide precise control on slopes and rocky environments. Fuel consumption is approximately 46 liters per hour, and the f

Komatsu Wheel Loader WA470-5

The Komatsu WA470-5 wheel loader is equipped with an SAA6D107E-1 diesel engine producing 260 horsepower at 2000 RPM. The engine displacement is 10.5 liters, delivering a maximum torque of 1300 N·m at 1400 RPM. The hydraulic system features a 300 L/min pump with 230 bar working pressure, controlling the boom, bucket, and frame. The frame is made of high-strength steel with a bending resistance of 3500 N·m. The standard bucket has a capacity of 4.5 cubic meters and a lift height of 3.2 meters, capable of moving large volumes of heavy materials such as soil, sand, and rock. The hydro-mechanical transmission with 4 forward and 3 reverse gears allows precise speed control up to 38 km/h.

The operating weight of the loader is 28 tons, and its overall length is 9.8 meters, ensuring stability and maneuverability on rough terrain and challenging conditions. Front and rear axles feature independent differential locks with a load capacity of 12 tons. The cabin includes an ergonomic vibration-absorbing seat, air conditioning, and digital controls to enhance comfort and reduce operator fatigue. The dual-circuit hydraulic braking system and adjustable hydraulic steering provide precise control on slopes and rocky environments. Fuel consumption is approximately 45 liters per hour, and the f

Komatsu Wheel Loader WA480-5

The Komatsu WA480-5 wheel loader is equipped with an SAA6D107E-1 diesel engine producing 280 horsepower at 2000 RPM. The engine displacement is 10.5 liters, delivering a maximum torque of 1350 N·m at 1400 RPM. The hydraulic system features a 320 L/min pump with 240 bar working pressure, controlling the boom, bucket, and frame. The frame is made of high-strength steel with a bending resistance of 3700 N·m. The standard bucket has a capacity of 5 cubic meters and a lift height of 3.3 meters, capable of moving large volumes of heavy materials such as soil, sand, and rock. The hydro-mechanical transmission with 4 forward and 3 reverse gears allows precise speed control up to 38 km/h.

The operating weight of the loader is 30 tons, and its overall length is 10.1 meters, ensuring stability and maneuverability on rough terrain and challenging conditions. Front and rear axles feature independent differential locks with a load capacity of 14 tons. The cabin includes an ergonomic vibration-absorbing seat, air conditioning, and digital controls to enhance comfort and reduce operator fatigue. The dual-circuit hydraulic braking system and adjustable hydraulic steering provide precise control on slopes and rocky environments. Fuel consumption is approximately 48 liters per hour, and the fu

Loader hydraulic pump

The loader hydraulic pump is a critical component in heavy machinery hydraulic systems, supplying oil flow and pressure to cylinders, booms, and other equipment. Typical flow capacity ranges from 50 to 250 liters per minute, with operating pressure up to 350 bar. The pump body is made of alloy steel or aluminum with wear- and corrosion-resistant coating, ensuring stable operation under harsh industrial environments and dusty conditions. Internal gears, pistons, or vanes with high hardness ensure smooth fluid transfer and minimal vibration. The drive shaft, supported by industrial bearings and resistant seals, guarantees leak-free operation and long service life.

Structurally, the loader hydraulic pump consists of the main body, internal gears or pistons, drive shaft, bearings, hydraulic inlet and outlet ports, and oil filter. Installation can be horizontal or vertical, with direct connection to the machine’s hydraulic motor. The pump operates at temperatures from -20 to 100°C and withstands vibration and mechanical shock. High efficiency above 85% and precise internal design ensure stable operation and uniform pressure for all loader hydraulic functions.

Heavy Duty Loader Tire Chain

The loader chain is a heavy duty traction device designed to improve grip and stability of loaders on slippery surfaces. It is mainly used on mining and construction loaders. The material is manganese alloy steel or heat treated carbon steel with high wear resistance. The nominal chain cross section diameter typically ranges from 10 to 22 millimeters. Material tensile strength often exceeds 900 megapascals. The chain design distributes pressure evenly across the tire surface. Chain weight is calculated based on tire size and machine capacity. It is engineered for extremely harsh operating conditions.

Structurally, the loader chain consists of reinforced links and anti slip traction elements. Link connections are manufactured using full penetration industrial welding. The chain pattern enhances traction on ice, mud, and rocky terrain. High resistance to impact and abrasion increases service life. It is suitable for dynamic loads and repeated shock conditions. Installation is performed circumferentially around the tire. The surface is usually phosphated or industrial anti corrosion coated. Each chain undergoes mechanical strength testing and quality inspection.

Caterpillar 988B loader exhaust

The exhaust system of the Caterpillar 988B loader is engineered with industrial-grade materials capable of withstanding temperatures up to 950 degrees Celsius, ensuring stable performance under heavy-duty conditions. The assembly includes a dual exhaust manifold, reinforced mid-pipe, multi-stage silencer, and vertical outlet. The internal pipe diameter ranges from 90 to 110 millimeters with a wall thickness of approximately 2.2 millimeters. The silencer’s multi-layer ceramic fiber structure reduces noise levels by up to 42 decibels. MIG and TIG welding are used at all joints to prevent gas leakage and improve durability.

In the design of the Caterpillar 988B loader exhaust, the curvature of gas flow channels is optimized to limit pressure loss to less than 10 percent of engine power. The silicone-based surface coating resists oxidation at temperatures up to 920 degrees Celsius. The total system weight is between 25 and 30 kilograms, allowing for direct mounting on the main chassis. A multilayer thermal insulator in the central section prevents heat transfer to the fuel tank and hydraulic system, enhancing operational safety and reliability.

Caterpillar 988F loader exhaust

The exhaust system of the Caterpillar 988F loader is constructed from industrial-grade stainless steel alloyed with chromium and nickel to ensure high resistance to heat and corrosion. The system consists of a dual exhaust manifold, large-diameter mid-pipe, multi-stage silencer, and a 45-degree vertical outlet. The internal pipe diameter ranges from 95 to 115 millimeters, with a wall thickness of approximately 2.3 millimeters. The silencer’s multilayer ceramic fiber structure reduces engine noise by up to 43 decibels. All joints are TIG and MIG welded to eliminate gas leakage and extend service life.

In the Caterpillar 988F loader exhaust system, gas flow is optimized so that pressure loss remains below 9 percent of engine output. The silicone-based thermal coating resists oxidation and discoloration at temperatures up to 950 degrees Celsius. The total exhaust system weight ranges between 26 and 32 kilograms, allowing for direct installation on the loader chassis. A triple-layer thermal insulator in the central section prevents heat transfer to the air filter and fuel delivery system, enhancing operational safety and reliability.

Caterpillar 966D loader exhaust

The exhaust system of the Caterpillar 966D loader is made from grade 304 stainless steel alloyed with chromium and nickel for excellent resistance to heat and corrosion. The assembly includes an exhaust manifold, reinforced mid-pipe, multi-stage silencer, and a 45-degree vertical outlet. The internal pipe diameter ranges from 85 to 100 millimeters, with a wall thickness of approximately 2 millimeters. The silencer features a multilayer ceramic fiber structure that reduces engine noise by up to 43 decibels. All joints are precision TIG welded to prevent gas leakage and extend system durability.

In the design of the Caterpillar 966D loader exhaust, gas flow is optimized to ensure back pressure remains below 8 percent of engine output. The heat-resistant surface coating withstands temperatures up to 920 degrees Celsius, preventing oxidation and discoloration. The total exhaust weight is approximately 20 to 25 kilograms, allowing for direct installation on the main chassis. A dual-layer thermal insulator in the central section prevents heat transfer to the air filter and fuel delivery system, improving operational safety and reliability.

HEPCO 65 loader exhaust

The HEPCO 65 loader exhaust is engineered to discharge engine gases efficiently while minimizing noise under heavy-duty operating conditions. It is made from heat-resistant alloy steel with an Fe-Cr-Ni composition capable of withstanding temperatures up to 700°C. The body thickness ranges from 2 to 2.5 mm, with an external coating of high-temperature silicone paint. The total length of the exhaust is approximately 870 mm, and the outlet pipe diameter is 105 mm. The multi-stage internal design reduces back pressure and enhances exhaust gas flow efficiency.

The HEPCO 65 loader exhaust features a dual-layer construction with 12 mm compressed fiberglass insulation to prevent heat transfer to the outer shell. The connection section is reinforced with a steel flange and sealed using a graphite gasket. It provides vibration resistance up to 160 Hz and corrosion protection verified by a 1000-hour salt spray test. The total system weight is around 9.8 kg, designed for direct installation onto the engine manifold. This configuration ensures durability, noise reduction, and improved engine performance in demanding work environments.

Stainless steel exhaust of the Caterpillar 950 loader

The stainless steel exhaust system of the Caterpillar 950 loader is constructed from grade 304 steel alloyed with chromium and nickel to ensure high resistance to heat, corrosion, and vibration. The system includes an exhaust manifold, reinforced mid-pipe, multi-stage silencer, and a 45-degree vertical outlet. The internal pipe diameter ranges from 75 to 90 millimeters, with a wall thickness of approximately 2 millimeters. The silencer’s multilayer ceramic fiber structure reduces engine noise by up to 41 decibels. All joints are TIG welded to prevent gas leakage and enhance system durability.

In the design of the stainless steel Caterpillar 950 loader exhaust, gas flow is engineered to maintain back pressure below 7 percent of engine power. The high-temperature surface coating withstands up to 920 degrees Celsius, preventing oxidation and discoloration. The total system weight ranges from 18 to 23 kilograms, allowing direct installation on the main chassis. A dual-layer thermal insulator in the central section prevents heat transfer to the air filter and fuel system, improving operational safety and reliability.

Caterpillar 930 loader exhaust

The exhaust system of the Caterpillar 930 loader is constructed from grade 304 stainless steel alloyed with chromium and nickel to ensure high resistance to heat, vibration, and corrosion. The system includes an exhaust manifold, reinforced mid-pipe, multi-stage silencer, and a 45-degree vertical outlet. The internal pipe diameter ranges from 70 to 85 millimeters, with a wall thickness of approximately 1.8 millimeters. The silencer’s multilayer ceramic fiber structure reduces engine noise by up to 40 decibels. All joints are precision TIG welded to eliminate gas leakage and extend system durability.

In the design of the Caterpillar 930 loader exhaust, gas flow is engineered so that pressure loss remains below 7 percent of engine power. The high-temperature surface coating withstands up to 900 degrees Celsius, preventing oxidation and discoloration. The total system weight ranges from 16 to 20 kilograms, allowing direct installation on the main chassis. A dual-layer thermal insulator in the central section prevents heat transfer to the air filter and fuel system, enhancing operational safety and reliability.

Caterpillar 966 loader exhaust

The exhaust system of the Caterpillar 966 loader is built from grade 304 stainless steel, offering superior resistance to heat and corrosion for extended service life. The system consists of an exhaust manifold, reinforced mid-pipe, multi-stage silencer, and a 45-degree vertical outlet. The internal pipe diameter ranges from 80 to 95 millimeters, with a wall thickness of approximately 2 millimeters. The silencer features a multilayer ceramic fiber lining that reduces engine noise by up to 42 decibels. Precision TIG welding at all joints prevents gas leakage and enhances mechanical strength.

In the design of the Caterpillar 966 loader exhaust, the gas flow path is engineered to keep pressure loss below 8 percent of engine power. The silicone-based surface coating withstands temperatures up to 900 degrees Celsius, preventing oxidation and metal discoloration. The total system weight ranges from 19 to 24 kilograms, allowing direct installation on the main chassis. A dual-layer thermal insulator in the central section prevents heat transfer to the air filter and fuel system, ensuring safe and reliable operation.