Urea Pump 028Y793 for TEMSA
Applicable models:TEMSA
Reference part number:0444042036，0444042004，2 880 158，0 28Y 793，6025.001.071.00.1，2880158，028Y793，2 871 880，A028Y793，0 444 042 004， 0 444 042 014，2871880
| Rated output : | 24v |
| Pulley : | |
| Size : | |
| Weight : | |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | Spot goods |
| Warranty : | 1 year |
| Product number : |
| Type : | urea pump |
| Specification : | 24v |
| Pulley : | |
| Brand : | NUOJIN |
| Number : | 0444042036，0444042004 |
| Quality : | Renovate |
| Delivery time : | 30 days |
Overview of the 028Y793 Urea Pump
A urea pump sits at the heart of the SCR system: pressure regulation, filtration and dosing in one unit. On the 028Y793 module the pump, the pressure sensor and the control electronics are matched, which is why whole-unit replacement is the practical repair.
Every unit is checked before packing. Mounting points, connectors and fluid or air paths are verified against the original.
Specification Summary
- Integrated pump, pressure sensor and control electronics
- Sealed fluid path for diesel exhaust fluid
- Filter included in the suction path
- Direct replacement for the original module
Reference Numbers and Cross References
The part is listed under the following references:
- 6025.001.071.00.1
- 2880158
- 028Y793
- A028Y793
- 2871880
Application Notes
On TEMSA installations the pump is mounted at the tank or on the chassis. Access is usually the deciding factor in how long the job takes.
Fitment follows the assembly, not the badge. Two vehicles of the same model year can use different units.
Failure Modes
Crystallisation is the common failure. Diesel exhaust fluid leaves crystals when it dries, and those crystals block the filter and score the pump.
Pressure faults follow: the module cannot hold the commanded pressure, the ECM logs a dosing fault and the engine derates. Sensor drift inside the module produces the same symptoms.
Fault Symptoms
- NOx efficiency or dosing fault code stored
- Engine derate or torque limitation
- White crystal deposits around the dosing injector
- Rough running after cold start
- Diesel exhaust fluid consumption higher or lower than normal
Checking Before Replacement
Read the fault codes and the dosing pressure before condemning the pump. A blocked filter or a leaking line mimics a failed pump, so check both first.
Diagnose before replacing. Most repeat failures come from a fault that was left in place.
Installation Notes
Flush the lines, fit a new filter and clean the tank neck before fitting the module. Prime the system with the diagnostic routine, clear the codes and run a dosing test. Keep the fluid path clean: any grit that enters will end up in the pump.
Related Parts to Check at the Same Time
- Urea filter
- Dosing injector
- NOx sensor
- Urea tank and lines
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
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.
What else should be replaced at the same time?
Everything that touches the new unit: filter and lines for a urea pump, clutch and seals for a gearbox, drier and expansion valve for a compressor.
Why did the original fail?
Contamination, heat and wear account for most failures. Clean installation and correct consumables prevent a repeat.
