Loader

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

Volvo L150E loader hydraulic pump repair

The Volvo L150E loader hydraulic pump is a critical and complex component for optimal machine performance. It is a variable displacement piston pump with a load-sensing system that adjusts flow and pressure according to demand. The pump delivers a flow rate of approximately 47.6 gallons per minute about 180 liters per minute, and its relief valve is set to 3626 psi around 250 bar.

During repair of the L150E hydraulic pump, the system pressure must first be fully released. The pump is then removed using appropriate tools, and its internal components are inspected. Worn parts such as pistons, valves, and O-rings are replaced if necessary, and after reassembly, the pump undergoes functional testing to ensure proper operation.

Replacement parts for the L150E hydraulic pump can be sourced from reputable suppliers like FridayParts. Compatible part numbers include VOE11709023 and VOE15068638, which also fit models L150F, L180E, L180F, and L220D. Using genuine parts ensures reliability, efficiency, and longevity of the hydraulic system.

volvo loader L90 rexroth hydraulic pump repair

Repairing the Volvo L90 A10VSO hydraulic pump begins with fully disassembling the housing and removing the rotor, pistons, and rear plate. Rotor and main shaft surfaces are measured with 0.05 mm precision to detect wear or misalignment. Pistons and springs are inspected and replaced if cracked, worn, or broken. All seals and O-rings are replaced to prevent hydraulic leaks. Components are cleaned with specialized hydraulic solvent, dried, and prepared for reassembly.
Assembly starts with precise installation of the rotor in the housing and alignment of the rear plate. Shaft torque and preload are adjusted to achieve 40–50 MPa operating pressure. Flow rate and volumetric efficiency are measured on a test bench at 2200–2500 rpm. Common issues include excessive noise, reduced output pressure, and internal leakage, which are resolved by replacing worn parts and accurate shaft alignment.

Loader transmission filter

Buying loader gearbox oil filter with different brands for Komatsu, Volvo, Caterpillar, Hyundai, Doosan, New Holland, Doosan and Chinese loaders is accepted at Mana Filters. The loader gearbox oil filter is used to remove pollutants and clean the circulating oil in the loader as one of the most used road construction machines. The loader gearbox oil filter is screw-type and often used with cellulose cartridges. These filters can be supplied with brands such as Mann, Caterpillar, Donaldson, Fleetguard, Baldwin and some Indonesian brands such as Jimco and Sakura.

Backhoe loader CUKUROVA friction brake

Backhoe loader CUKUROVA friction brake