Compatible vehicle models
Mainly compatible with China Shagang Haowo series heavy trucks:
• Haowo 08 model, Haoka HOKA, HOWO HV30 complete vehicles; ZZ1257/ZZ3257/ZZ5317 etc. Haowo chassis models
Note: Not compatible with Shande Card C7H/T7H
Structure and Working Characteristics
1. SD508 5-cylinder piston structure, the most mature air conditioning compressor for trucks, resistant to bumps and high temperatures, suitable for construction sites and long-distance heavy-load conditions.
2. Electromagnetic clutch is external: The engine belt drives the clutch, which engages when powered on and operates, and disengages when power is off.
3. Installation and Fixation: Four-legged flange base installation, the Sinotruk engine bracket is directly aligned and installed, no need for modification of the bracket.
4. Cooling Capacity: Satisfies the cooling requirements of the large cab of heavy trucks, with stable output in harsh high-temperature environments.
Common Fault Points
1. Clutch Erosion: 24V voltage instability, overly tight belt, poor heat dissipation leading to burnout of the magnetic suction coil.
2. Internal Cylinder Pulling: Insufficient refrigeration oil in the system, impurities in the pipeline causing the compressor to become stuck.
3. High and Low Pressure Interface Leakage: Aging sealing ring. When disassembling and assembling, it is essential to replace the O-ring and add the corresponding PAG refrigeration oil.
4.Compression of refrigerant: The low-temperature and low-pressure R134a gaseous refrigerant exiting the evaporator is compressed by the piston, transforming into high-temperature and high-pressure gaseous refrigerant, which is then sent to the condenser to complete the most crucial working step of the air conditioning refrigeration cycle.
1. Electromagnetic clutch start-stop: A 24V electromagnetic clutch controls the operation of the compressor and its idle state. When powered on, the clutch engages, and the engine belt drives the internal piston to perform work; when the power is cut off, the pulley spins idly, and the compressor does not operate, reducing the power loss of the engine.
2. Built-in oil circulation lubrication: During operation, it stirs the PAG refrigerant oil to lubricate, cool, and seal the pistons, inclined discs, and bearings, preventing internal components from dry grinding and cylinder scuffing.
3. Heavy-duty truck large driver's cabin cooling output, continuously providing cooling capacity under idling, climbing, and high-temperature exposure conditions, meeting the cooling requirements of Haowo heavy truck driver's cabin.
FAQ
Q: What is the OEM part number of this compressor?
A: The main OEM number is WG1500139001. It is fully interchangeable with the old part number WG1500139006.
Q: What is the specific model structure?
A: It adopts SD508 / 5H14 5-cylinder swash plate swing piston structure, which is the classic and mature model for heavy-duty truck air conditioning.
Q: What are the standard parameters of the compressor?
A: Rated voltage: 24V; Belt type: 6PK multi-groove belt; Refrigerant: R134a; Displacement: 138cc/r; Net weight: 7.1-7.5kg; Installation method: 4-hole flange fixed base.
Q: What are the main materials of the compressor core components?
A: ① Housing: High-pressure die-cast aluminum alloy ADC12, lightweight, high heat dissipation and vibration resistance; ② Piston: High-silicon wear-resistant aluminum alloy; ③ Swash plate & main shaft: Forged alloy steel with quenching treatment, high strength and torsion resistance; ④ Seals: NBR rubber, resistant to R134a refrigerant and high/low temperature aging.
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