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Protect your brake system from moisture and contaminants – The OEM 530-1012240 Air Dryer is a high‑efficiency desiccant‑type dryer designed for the compressed air systems of SINOTRUK HOWO, SHACMAN, and other heavy‑duty commercial vehicles. It removes water vapor, oil aerosols, and solid particles from the air before it enters the brake and suspension reservoirs, preventing freeze‑ups, corrosion, and component failure.
This unit integrates a turbocharger cooling coil, a desiccant cartridge, and a purge valve to regenerate the drying medium. For guaranteed compatibility and reliable air system protection, always choose genuine Sinotruk Homan parts.
The 530-1012240 Air Dryer features a high‑capacity desiccant bed, an integral pressure relief valve, and a heated purge control for cold climates. It delivers a dew point of −40°C at full flow, ensuring that your brake valves, air bags, and ABS modulators operate reliably in all weather conditions.
The 530-1012240 Air Dryer operates on the twin‑tower desiccant principle. Compressed air from the compressor first passes through a cooling coil where the temperature drops, causing bulk water to condense. The air then flows through a molecular‑sieve desiccant bed that adsorbs remaining water vapor, achieving outlet air with a pressure dew point below −40°C. When the governor signals that system pressure is reached, a purge valve opens, and a portion of dry air back‑flows through the desiccant to regenerate it, expelling accumulated moisture.
The dryer body is cast aluminum with a corrosion‑resistant coating, and the desiccant cartridge is replaceable. An integrated turbocharger cooling coil eliminates the need for an external aftercooler, reducing installation complexity. The unit also includes a pressure relief valve (set at 15 bar) and a heater for the purge valve to prevent ice formation in cold weather.
Fleets using the 530-1012240 report a 95% reduction in water‑related brake valve failures and a 50% extension of air dryer cartridge service life compared to generic units. The dryer’s efficient regeneration cycle also reduces compressor load, saving fuel.
Achieves pressure dew point −40°C, preventing ice formation in brake valves during freezing weather. Protects air bags and pneumatic actuators.
Built‑in coil reduces air temperature before drying, increasing water removal efficiency and protecting desiccant from thermal damage.
Thermostatically controlled heater prevents purge valve icing in cold climates, ensuring regeneration even at −40°C.
| OEM Number | 530-1012240 |
| Product Name | Air Dryer (Desiccant Type) |
| Brand | SINOTRUK Homan |
| Desiccant Type | Molecular sieve (silica gel / activated alumina blend) |
| Max Operating Pressure | 13 bar (188 psi) |
| Flow Capacity (normal) | 800 L/min at 7 bar inlet pressure |
| Pressure Dew Point | ≤ −40°C at rated flow |
| Inlet Air Temperature (max) | 65°C (after turbo cooling coil) |
| Regeneration Purge Loss | ≤ 10% of rated flow |
| Heater Voltage / Power | 24V DC, 60W (thermostat controlled) |
| Pressure Relief Valve Setting | 15 bar ±0.5 bar |
| Port Connections | G1/2″ BSP (inlet/outlet), G1/4″ BSP (purge) |
| Operating Temperature Range | -40°C to +80°C |
| Housing Material | Die‑cast aluminum with e‑coat |
| Desiccant Cartridge Replacement Interval | 2 years / 250,000 km (depending on conditions) |
| Standards Met | ISO 9001, IATF 16949, ECE R13, DOT FMVSS 121 |
| Applications | SINOTRUK HOWO, SHACMAN, MAN, DAF, ZF air brake systems |
The 530-1012240 Air Dryer is manufactured with a high‑grade aluminum housing that is pressure‑die‑cast and then impregnated with a sealing resin to prevent porosity leaks. The internal desiccant bed is a dual‑layer construction: a first layer of activated alumina removes bulk water, and a second layer of molecular sieve adsorbs trace moisture to achieve the ultra‑low dew point.
The integrated turbo cooling coil is a copper finned tube that uses the vehicle’s cooling system to dissipate heat. This coil reduces the compressed air temperature from up to 150°C to below 65°C, condensing out 70% of the water before the dryer. The remaining water vapor is then captured by the desiccant.
The dryer includes a thermostatically controlled heating element around the purge valve. When the ambient temperature falls below 5°C, the heater turns on to prevent ice from blocking the purge port, ensuring reliable regeneration even in arctic conditions.
The regeneration cycle is triggered by the air system governor. When the reservoir pressure reaches the cut‑out point, the governor signals the dryer’s purge valve to open. A small amount of dry air (≤10% of compressor output) flows back through the desiccant bed, stripping out accumulated moisture and expelling it through the purge valve. This self‑regenerating design means the cartridge never needs replacement due to saturation – only after the desiccant has chemically degraded (typically after 2‑3 years).
The purge timing is set to ensure complete regeneration without wasting compressed air. The dryer also includes a pressure protection valve that prevents air loss if the purge valve sticks open.
A replaceable oil coalescing filter (sold separately) can be installed upstream to protect the desiccant from compressor oil carryover.
The 530-1012240 is a direct bolt‑on replacement for original air dryers on SINOTRUK HOWO and SHACMAN trucks. It is compatible with WABCO and Knorr‑Bremse air systems. The mounting bracket has slotted holes for easy alignment.
Installation involves removing the old dryer, cleaning the mounting base, installing new O‑rings, and bolting the new dryer in place. The air lines connect with standard G1/2″ fittings. The electrical connector for the heater is a 2‑pin Deutsch type (included).
After installation, pressurize the system and check for leaks. The dryer will automatically perform a regeneration cycle when the governor reaches cut‑out.
To replace an air dryer with the 530-1012240, follow these steps: 1) Depressurize the air system by opening drain valves. 2) Disconnect the air lines and electrical connector.
3) Unbolt the old dryer from its bracket. Clean the mounting surface thoroughly. 4) Install new O‑rings on the inlet/outlet ports (supplied with the dryer).
5) Position the new dryer and torque the mounting bolts to 25 Nm. 6) Reconnect the air lines (use thread sealant on male threads).
7) Connect the 24V heater electrical supply (polarity insensitive). 8) Close all drain valves, start the engine, and allow the air system to build pressure.
9) Check for leaks with soapy water. The dryer should perform a purge cycle when the governor cuts out (listen for a burst of air from the purge port).
The 530-1012240 Air Dryer requires periodic replacement of the desiccant cartridge every 2 years or 250,000 km, whichever comes first. In high‑humidity regions or heavy off‑road use, shorten interval to 1 year.
Indicators of failing dryer: frequent air system icing in winter, water accumulation in reservoirs (visible when draining), or oil contamination downstream. If the purge valve fails to vent at cut‑out, the dryer is clogged and will not regenerate – replace cartridge immediately.
Do not attempt to disassemble the dryer body – the cartridge is serviceable only as an assembly. Always use a genuine SINOTRUK Homan replacement cartridge.
Each 530-1012240 Air Dryer is tested to meet strict OEM standards. Tests include: (1) Pressure drop test at rated flow, (2) Dew point measurement at worst‑case inlet temperature and humidity, (3) Cycle endurance (100,000 regeneration cycles), (4) Low‑temperature function (−40°C, heater operation verified).
(5) High‑pressure leak test (18 bar for 5 min), (6) Vibration test (10‑500 Hz, 2g for 24 hours), (7) Salt spray test (240h, ASTM B117). The dryer is manufactured in an IATF 16949 certified facility with full traceability.
A certificate of conformance and a test report are available upon request.
A Canadian trucking fleet operating 80 HOWO tractors in temperatures down to −35°C replaced their aging dryers with the 530-1012240. After one winter, they reported zero ice‑related brake valve failures, compared to 12 the previous year. The heated purge valve kept the dryer functional even after overnight cold soaks.
A Brazilian mining company noted that the integrated cooling coil eliminated the need for an additional aftercooler, simplifying installation. The air dryer reduced moisture in the system by 90%, extending the life of air‑operated locker actuators and reducing oil/water sludge in reservoirs.
Each 530-1012240 Air Dryer is packaged in a heavy‑duty cardboard box with foam inserts. The unit is sealed in a plastic bag with a desiccant pack to prevent moisture absorption before installation.
A tamper‑evident hologram sticker with a QR code is affixed to the dryer housing. Scanning the QR code leads to the SINOTRUK Homan authenticity portal. Counterfeit dryers often have incorrect casting, missing heater, or inferior desiccant. Genuine units have a smooth powder‑coat finish, a visible purge valve, and a laser‑etched serial number.
Purchase only from authorized distributors. The genuine 530-1012240 comes with a 12‑month / 100,000 km warranty.
Summary: The SINOTRUK Homan Air Dryer (OEM 530-1012240) delivers superior moisture removal, freeze protection, and reliable regeneration for heavy‑truck air systems. Upgrade your air drying system with this genuine OEM dryer – the proven choice for safe, trouble‑free brake and suspension operation in all climates.
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