The genuine XCMG 380604128 Air Conditioning Evaporator is a high‑efficiency cooling coil designed for motor grader cab climate control systems.
This OEM 380604128 evaporator absorbs heat from the cabin air, converting liquid refrigerant into gas and delivering cool, dehumidified air to the operator.
Manufactured from aluminum fins and copper tubes with a corrosion‑resistant coating, it provides maximum heat transfer in a compact size, fitting inside the cab HVAC housing.
Engineered for XCMG GR135, GR165, GR180, GR215, GR260, GR300, and GR350 motor graders, this evaporator is a direct replacement for original equipment with identical dimensions, port locations, and mounting brackets.
A clogged, corroded, or leaking evaporator results in poor cooling, window fogging, and musty odors. Replacing a failed evaporator with genuine XCMG 380604128 restores proper cooling capacity and air quality.
This component also includes a built‑in expansion valve (thermal expansion valve) for precise refrigerant metering, ensuring optimal superheat and evaporator performance.
| Parameter | Specification |
|---|---|
| OEM Number | 380604128 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | A/C Evaporator Coil / Cooling Core |
| Tube Material | Copper (seamless, with aluminum fins) |
| Fin Type | Louvered aluminum, hydrophilic coating |
| Refrigerant Compatibility | R134a, R1234yf |
| Expansion Valve Type | External equalized thermostatic expansion valve (TXV) |
| ORIFICE / Capacity | 2.5 ton cooling capacity (30,000 BTU/h) |
| Max Working Pressure (Refrigerant Side) | 3.5 MPa (500 psi) |
| Burst Pressure (Min) | 8.5 MPa (1,230 psi) |
| Port Connections (Inlet/Outlet) | #8 O‑ring female (inlet) and #6 O‑ring female (outlet) |
| Drain Pan Included | Yes (molded ABS, with 2 drain ports) |
| Corrosion Protection | Epoxy coating on fins + copper tube passivation |
| Weight (Dry) | 3.2 kg (7.0 lb) |
| Operating Temperature Range | -40°C to +110°C |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 |
| Superseded Part Numbers | 380604110, 380604115, 380604122 |
The 380604128 evaporator is the component where heat exchange actually cools the cabin air. Low‑pressure liquid refrigerant enters the coil, absorbs heat, and boils into gas, leaving the air cold.
Simultaneously, moisture in the air condenses on the cold fins and drains away, reducing humidity and preventing window fogging. A clogged evaporator cannot drain properly, leading to water pooling and mold growth.
A leaking evaporator allows refrigerant to escape, reducing cooling performance and potentially damaging the compressor due to low oil return. Replacing a failed evaporator with genuine XCMG 380604128 restores full cooling and dehumidification.
The included expansion valve meters the exact amount of refrigerant, ensuring the evaporator operates efficiently across all load conditions.
Each 380604128 evaporator features seamless copper tubes expanded into aluminum fins, maximizing surface area for heat transfer. The louvered fin pattern promotes turbulent airflow, increasing efficiency.
A hydrophilic epoxy coating on the fins improves water shedding and prevents galvanic corrosion between copper and aluminum. The entire assembly is leak‑tested at 4.0 MPa before shipment.
The integrated drain pan is made of UV‑stabilized ABS plastic that resists cracking and warping. Two drain tubes prevent water backup even when the grader is parked on an incline.
XCMG performs 100% leak testing on every evaporator using helium mass spectrometry, ensuring zero refrigerant loss. The expansion valve is calibrated and factory‑set for R134a or R1234yf.
To replace a leaking or clogged evaporator, recover the refrigerant and remove the HVAC housing from the cab. Unbolt the cover and disconnect the heater hoses if integrated.
Remove the expansion valve retaining nut and separate the valve from the evaporator. Note the position of the thermostatic sensing bulb.
Slide the old evaporator out of the housing. Clean the tray and inspect for debris. Install new O‑rings lubricated with PAG oil.
Place the new 380604128 evaporator into the housing and secure it with the original brackets. Reattach the expansion valve and torque the nut to 20 Nm. Attach the sensing bulb to the suction line with heat‑conducting paste.
Reassemble the housing, reinstall it in the cab, and reconnect the electrical connections. Evacuate the system, recharge with correct refrigerant, and test for leaks.
Always replace the receiver‑drier and flush the system when changing an evaporator. Keep a genuine spare evaporator for quick summer repairs.
Poor cooling or warm air from vents despite correct refrigerant charge, musty or vinegary smell from the dashboard, water leaking inside the cab (not from condensation drain).
Also, visible oil residue around the evaporator case, hissing sound inside the cab, and frequent compressor cycling. Replace the evaporator immediately to avoid compressor damage.
Inspect the evaporator annually by checking condensate drain flow and performing an A/C performance test (air outlet temperature below 10°C at max fan).
XCMG recommends replacing the evaporator every 5‑7 years or 6,000‑8,000 operating hours, whichever occurs first. In dusty or high‑humidity environments, replace every 4,000 hours.
Keep the cabin air filter clean – a clogged filter reduces airflow over the evaporator, leading to ice formation on the coil and eventual freeze‑up.
If you notice an unpleasant odor, use an evaporator cleaner spray to kill mold and bacteria. However, if the coil is leaking, replacement is the only solution.
Genuine XCMG 380604128 evaporators are backed by a 12‑month warranty. Regional warehouses: Houston (USA), Rotterdam (Netherlands), Dubai (UAE), and Shanghai (China).
Standard air freight delivers within 3‑7 business days worldwide. Express 24‑48 hour shipping available for urgent A/C repairs. Bulk orders (5+ units) receive volume discounts.
Aftermarket evaporators often use thin copper tubes or poor fin bonding, leading to premature leaks and reduced cooling. Genuine XCMG 380604128 uses heavy‑gauge seamless tubes and robotic brazing for long‑term reliability.
Do not attempt to repair a leaking evaporator with epoxy or solder – it will not withstand pressure. Keep a genuine spare evaporator in your parts inventory for rapid field replacement.
Order the genuine XCMG 380604128 Air Conditioning Evaporator today and maintain a cool, dry, and healthy cab environment for your motor grader operator, even in the hottest and most humid conditions.
Upgrade your grader’s climate control system with XCMG genuine evaporators – high‑density coil, corrosion‑proof coating, and 100% leak‑tested.
