FAW CA6DM2 Engine Air Compressor Assembly 3820090-53D for FAW J6, JH6 and J7 trucks
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Vehicle Type: FAW truck parts
Brand Name: FAW
Person in charge: William Du
Cel: 8619050562894
Whatsapp: 8619050562894
E-mail: sales22@chinatruck.cc
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Details
1.Product Description
In heavy-duty FAW J6, JH6, J7, J6P, J6V and JK6 truck operations, the engine air compressor assembly is far more than a standard pneumatic component—it is the core pressure-generation unit responsible for maintaining stable brake performance, air suspension operation, clutch assistance systems, and auxiliary pneumatic equipment.
When the air compressor assembly begins to degrade, it triggers a costly chain reaction in the field:
Phase 1: Reduced Compression Efficiency – Internal piston and cylinder wear gradually reduce air production capacity.
Phase 2: Excessive Oil Carryover – Worn piston rings allow engine oil to enter the air system, contaminating valves and reservoirs.
Phase 3: Slow Air Pressure Build-Up – The compressor struggles to maintain required working pressure during repeated braking cycles.
Phase 4: Pneumatic System Instability – Air dryers, relay valves, and brake circuits begin operating outside normal pressure ranges.
Phase 5: Brake Performance Risk – Insufficient system pressure may trigger brake warnings, vehicle derating, and emergency downtime.
Critical Fleet Impact: For fleet owners and workshop managers, a failing air compressor assembly does not simply mean replacing one component. It can result in braking inefficiency, increased maintenance costs, vehicle downtime, and significant operational risks.
2.Technical Parameters
| Item | Specification |
|---|---|
| OEM No | 3820090-53D |
| Product Name | Engine Air Compressor Assembly |
| Engine Brand | FAWDE |
| Engine Model | CA6DM2 |
| Product Type | Heavy-Duty Engine Driven Air Compressor |
| Vehicle Application | FAW J6 / J6P / J6V / J6M / JH6 / J7 / JK6 |
| Installation Position | Engine Side Mounted |
| Drive Method | Engine Gear Driven |
| Working Function | Air Brake System Pressure Supply |
| Material | High Strength Cast Iron Housing |
| Internal Structure | Precision Machined Piston Compression Unit |
| Cooling Method | Engine Cooling System Assisted |
| Lubrication Method | Engine Oil Lubricated |
| Operating Pressure | Heavy-Duty Commercial Vehicle Standard |
| Weight | Approx. 12–18 KG |
| Surface Treatment | Anti-Corrosion Coating |
| Packing | Export Carton or Wooden Case |
| Application | Long-Haul Logistics, Mining Trucks, Construction Fleets |
3. Fitment Problem — Make Sure It Works
Fitment Models
| Brand | Model | Engine | Fitment |
|---|---|---|---|
| FAW | J6P | CA6DM2 | Direct Fit |
| FAW | JH6 | CA6DM2 | Direct Fit |
| FAW | J7 | CA6DM2 | Direct Fit |
| FAW | JK6 | CA6DM2 | Direct Fit |
| FAW | J6V | CA6DM2 | Direct Fit |
| FAW | Other Platforms | Similar Engines | Can Be Adapted |
(1) How to verify part's fitment?
Air compressor assemblies are often misjudged because many suppliers offer visually similar units with different mounting flanges, drive gears, oil passages, and discharge port layouts. A compressor that appears identical externally may fail during installation or produce incorrect operating pressure.
Do not rely on appearance. Confirm by vehicle details and physical measurements.
Checks Before Purchase
[ ] VIN Number
[ ] OEM Number: 3820090-53D
[ ] Engine Model: CA6DM2
[ ] Mounting Bolt Pattern
[ ] Gear Drive Configuration
[ ] Air Outlet Port Direction
[ ] Oil Supply Interface Position
[ ] Cooling Water Passage Layout
[ ] Compressor Cylinder Configuration
[ ] Vehicle Model Confirmation
(2) OEM Cross Verification
| Compatibility Status | Target Heavy-Duty Platforms & Conditions | Engineering Fitment Action |
|---|---|---|
| Direct Fit | CA6DM2 engines equipped with original 3820090-53D compressor layout | 100% Drop-In Replacement. No modification required. |
| Can Be Adapted | Certain FAW heavy truck platforms using equivalent CA6DM series compressor systems | Requires professional verification of mounting and piping layout. |
| Similar But NOT Compatible | Compressors from CA6DL, CA6DN, Weichai, Cummins or other engine families | DO NOT INSTALL. High risk of mounting mismatch or pressure failure. |
4.Common Field Failure Case
(1) Case Study Item
| Case Study Item | Field Operational Profiles & Technical Realities |
|---|---|
| Vehicle Fleet Model | FAW JH6 6×4 Tractor |
| Service Life / Usage | Approx. 650,000 km |
| Field Problem Manifestation | Air pressure builds slowly and warning light appears repeatedly during operation |
| Technical Root Cause | • Internal piston wear • Compressor valve plate fatigue • Excessive oil contamination inside air system • Reduced compression efficiency |
| Engineering Solution | Replace complete 3820090-53D air compressor assembly and inspect downstream pneumatic system |
| Proven Customer Benefits | • Restored normal air pressure build-up • Eliminated brake system alarms • Reduced downtime and maintenance costs |
(2) Smart Buying Guide (Don't Waste Money on Wrong Repairs)
Table A: Symptom Recognition — The "Pressure Build-Up" Logic
| Truck Operating Condition | What the Truck Does (Symptom) | Technical Reality (What It Really Means) | Action & Maintenance Rule |
|---|---|---|---|
| Engine Startup | Air pressure rises normally | Compressor working correctly | Safe to Run |
| Continuous Operation | Pressure rises slowly | Internal compressor wear begins | Schedule Inspection |
| Heavy Braking Cycle | Air pressure warning appears | Compressor output insufficient | Immediate Diagnosis Required |
| High Load Operation | Brake system repeatedly alarms | Severe compressor efficiency loss | Replace Compressor Assembly |
Table B: Misdiagnosis Risk — Stop Changing the Wrong Parts!
| What You Think Is Broken (Wrong Judgment) | The Real Root Cause (What You Actually Need to Fix) | Money-Saving Tip |
|---|---|---|
| Air dryer is faulty | Compressor output is insufficient | Check compressor performance first |
| Brake valve failure | Air system pressure is unstable | Verify compressor pressure output |
| Air reservoir leakage | Compressor cannot maintain pressure | Test compressor capacity before replacing tanks |
Table C: Fake vs. Premium Heavy-Duty Air Compressor Identification
| Inspection Indicator | Cheap / Fake / Low-Quality Risk | Premium Heavy-Duty Quality | Why It Matters for Your Business |
|---|---|---|---|
| Housing Material | Thin casting with porous structure | High-density precision casting | Longer service life |
| Internal Components | Low-quality valves and piston rings | OEM-grade wear-resistant components | Stable pressure generation |
| Machining Accuracy | Poor tolerance control | Precision CNC machining | Reduced leakage and wear |
| Packaging | Basic carton protection | Export-grade reinforced packaging | Safer international transportation |
5.Risk Control —— Make sure everything goes well
| Supply Chain Risk | Customer Operational Concern | Our Proactive Quality Assurance Solution |
|---|---|---|
| Wrong Mounting Configuration | Cannot install onsite | OEM verification before shipment |
| Incorrect Air Output Specification | Insufficient braking pressure | Technical drawing confirmation |
| Oil Passage Mismatch | Compressor damage | Engine model cross-check |
| Transit Corrosion | Rust and contamination | VCI anti-corrosion packaging |
| Transportation Damage | Housing cracks | Reinforced export packing |
6.Supplier Stability and Procurement Value —— Make More Profit in Your Market.
| Who Are You | Troubles We Save For You | Real Money & Business Value |
|---|---|---|
| Fleet Owners & Workshop Mechanics | Avoid repeated brake system failures and emergency downtime | Keep trucks operating efficiently |
| Importers & Wholesalers | Avoid wrong compressor inventory purchases | Faster inventory turnover |
| Local Distributors | Reduce warranty claims | Increase customer satisfaction |
| Maintenance Contractors | Simplify repair operations | Improve workshop profitability |
7.Related Truck Parts —— Buy More, Save More, Earn More Profit!
| Part Category | Exact Truck Parts | Official OEM / Part No. | Why You Should Buy Together? |
|---|---|---|---|
| Directly Associated Parts | Air Dryer Assembly | 3511010-53D | Protect compressor performance |
| Directly Associated Parts | Governor Valve | 3515010-53D | Controls compressor operation |
| Directly Associated Parts | Compressor Repair Kit | Matching Model | Prevent secondary failures |
| Directly Associated Parts | Air Compressor Gear | Matching Model | Power transmission component |
| Directly Associated Parts | Compressor Mounting Gasket | Matching Model | Leak prevention |
| Directly Associated Parts | Compressor Oil Pipe | Matching Model | Lubrication system |
| Directly Associated Parts | Compressor Water Pipe | Matching Model | Cooling circuit |
| Directly Associated Parts | Compressor Mounting Bracket | Matching Model | Secure installation |
| Same System Core Parts | Four Circuit Protection Valve | 3515015 Series | Brake safety |
| Same System Core Parts | Relay Valve | FAW Application | Pneumatic control |
| Same System Core Parts | Brake Chamber | Various Models | Brake operation |
| Same System Core Parts | Air Reservoir | Various Models | Air storage |
| Same System Core Parts | Air Pressure Sensor | FAW Application | Pressure monitoring |
| Same System Core Parts | Foot Brake Valve | FAW Application | Driver control |
| Same System Core Parts | Hand Brake Valve | FAW Application | Parking brake control |
| Same System Core Parts | Air Dryer Cartridge | Matching Model | Moisture removal |
| Frequently Ordered Consumables | Air Line Hose | Various Sizes | Pneumatic connection |
| Frequently Ordered Consumables | Brass Air Fittings | Various Sizes | Pipeline installation |
| Frequently Ordered Consumables | O-Ring Kit | Various Sizes | Sealing maintenance |
| Frequently Ordered Consumables | Copper Washers | Various Sizes | Leak prevention |
| Frequently Ordered Consumables | Mounting Bolts | Standard Sizes | Installation support |
| Frequently Ordered Consumables | Hose Clamps | Standard Sizes | Secure connections |
| Frequently Ordered Consumables | Sealant Kit | Workshop Grade | System maintenance |
| Frequently Ordered Consumables | Thread Seal Tape | Workshop Grade | Air leakage prevention |
| Often Forgotten Small Parts | Pressure Relief Valve | Matching Model | System protection |
| Often Forgotten Small Parts | Check Valve | Matching Model | Airflow control |
| Often Forgotten Small Parts | Quick Connector | Various Sizes | Maintenance convenience |
| Often Forgotten Small Parts | Air Filter Element | Matching Model | Compressor protection |
| Often Forgotten Small Parts | Compressor Intake Pipe | Matching Model | Air supply system |
| Often Forgotten Small Parts | Compressor Mounting Bush | Matching Model | Vibration reduction |
Contact Information
Your Direct Contact: William Du (Senior Export Sales Manager)
Heavy Truck Aftermarket Fitment & Supply Chain Specialist
Our Expertise: Full Supply Chain for FAW | SINOTRUK | SHACMAN | FOTON | WEICHAI Heavy Truck Spare Parts
WhatsApp / WeChat: +86 19050562894
Business Email: Sales22@chinatruck.cc
Export Platform: Chinatruck.cc
Important Note: For CA6DM2 engine parts, always provide engine nameplate photos, OEM numbers, or VIN information before ordering to ensure accurate fitment verification.
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