| Rated output : | |
| Pulley : | 7PK |
| Size : | |
| Weight : | 净重6.65KG |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | Spot goods |
| Warranty : | 1 year |
| Product number : |
| Type : | A/C compressor |
| Specification : | |
| Pulley : | 7PK |
| Brand : | NUOJIN |
| Number : | CS20052 |
| Quality : | NEW |
| Delivery time : | 30 days |
Overview of the A/C Compressor
An A/C compressor is a positive-displacement pump driven by the engine belt. On the replacement unit the electromagnetic clutch engages the pulley on demand, and the displacement is controlled internally to match the cooling load.
Every unit is checked before packing. Mounting points, connectors and fluid or air paths are verified against the original.
Specification Summary
- 7PK pulley
- Complete compressor with electromagnetic clutch and pulley
- Refrigerant circuit connections as original
- Pre-charged with the specified PAG oil
- Direct replacement for the original mounting
Reference Numbers and Cross References
Identify the unit by the number on the old part and by its interface dimensions.
Application Notes
Confirm the number against the vehicle before ordering. Where a model was built with more than one variant, the part number is the only reliable guide.
Failure Modes
When the charge falls, lubrication falls with it. The compressor then runs dry, wears the swash plate and eventually seizes or sheds metal into the circuit.
Clutch failure is separate and common: the coil opens or the air gap grows, and the compressor stops engaging while the system is otherwise sound.
Fault Symptoms
- Weak or no cooling at the vents
- Compressor clutch not engaging
- Rattle or knock from the compressor
- Oily residue around hose joints
- Frequent cycling or fuse failure
Checking Before Replacement
Check static and running pressures, clutch engagement and the belt. Confirm the charge before condemning the compressor.
Confirm the fault is inside the unit and not in the circuit around it.
Installation Notes
Recover the refrigerant, flush the circuit, fit a new receiver drier and expansion valve, add the specified oil quantity to the new compressor and evacuate before charging. Check clutch air gap and belt alignment, then verify vent temperature.
Related Parts to Check at the Same Time
- Receiver drier
- Expansion valve
- Condenser
- Drive belt and tensioner
Quality Control and Supply
Every batch is function-tested before packing. Hejian Nuojin Auto Parts Co., Ltd. supplies in neutral packaging with a one-year warranty.
Frequently Asked Questions
Why did the original fail?
Contamination, heat and wear account for most failures. Clean installation and correct consumables prevent a repeat.
Is a warranty included?
Yes, one year against manufacturing defects, with neutral packing for resale.
How do I confirm this is the right unit?
Read the number from the old part and compare the key interfaces: connectors, brackets, pulley or pipework.
Can it be fitted without special tools?
Standard hand tools cover most of the job. Refrigerant work needs recovery and charging equipment, and urea systems need a diagnostic routine to prime.
