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SINOTRUK MAN MC11 MC13 Diesel Engine 24V AC Compressor 202V77970-7030
Common Faults and Replacement Recommendations
1. Air conditioner fails to cool or cooling is insufficient: This is usually caused by wear and leakage of the compressor's internal valve plates or a burnt-out electromagnetic clutch coil (preventing engagement).
2. Abnormal noise in the engine compartment when the A/C is on: A loud metallic grinding sound upon switching on the A/C indicates internal compressor bearing failure or piston scoring (seizure).
3. Overhaul precautions: Before installing a new compressor on a heavy-duty truck, the entire A/C piping system must be flushed, and the A/C receiver-drier (accumulator) replaced. If the old compressor suffered internal scoring or fragmentation, residual metal debris in the lines could instantly damage the newly installed compressor.
Multi-ribbed pulley (PV / Poly-V groove)-typically in the 8PK (8-groove) specification-designed for use with the Front-End Accessory Drive (FEAD) system of MAN-technology engines.
SINOTRUK 24V MAN Engine Models A/C System Overhaul BOM Detailed List
| No. | Component Name | OE Part No. | Qty | Replacement Level | Remarks / Functional Description |
|---|---|---|---|---|---|
| I. Core Power Component (Must be replaced) | |||||
| 1 | A/C Compressor Assembly | 202V77970-7030 | 1 pc | Mandatory | This product; 24V/8PK drive; Sanden SD7H15 specification and technology. |
| II. Core Filtration & Throttling Components (Must be replaced simultaneously if compressor failed) | |||||
| 2 | A/C Receiver Drier (Filter Drier Bottle) | WG1664820013 (Depends on Model) | 1 pc | Mandatory | Filters moisture and impurities. The old drier traps metal debris from the failed compressor and must be replaced to protect the new one. |
| 3 | A/C Expansion Valve (TxV / Throttle Valve) | WG1664820025 (or OE Specific) | 1 pc | Highly Recommended | Responsible for high-pressure refrigerant throttling and atomization. The micro-orifices in the old valve easily clog with metal dust. |
| III. Belt Drive & Front End Accessory Drive (Replace based on wear/tear) | |||||
| 4 | Alternator & Compressor V-Ribbed Belt (8PK) | 082V26201-7151 (Depends on Engine) | 1 pc | Recommended | For MAN tech engines. Belts subjected to a seized compressor are usually stretched or scorched. |
| 5 | Belt Tensioner Assembly | 202V26201-7132 (Depends on Engine) | 1 pc | Inspect & Replace | Ensures proper 8PK belt tension. Replace if the bearing feels loose or makes noise. |
DETAILS
| DESCRIPTION | 24V AC Compressor | PART NUMBER | 202V77970-7030 |
| WEIGHT | 6kg | VOLUME | 230 × 160 × 170 mm |
| TRUCK MOLDE | SINOTRUK | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | ENGINE |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
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