PS400A Diesel Injector Nozzle Tester (Iron Base) – 600 Bar Calibration Bench

The PS400A is a 5.5 kg mechanical injector tester engineered for precise calibration and diagnostic assessment of diesel injectors across a broad spectrum of automotive and tractor engines. This robust, iron-based test stand generates up to 600 atmospheres of pressure, enabling workshops to perform critical evaluations such as pop pressure adjustment, spray pattern analysis, and seat tightness verification. It is an indispensable service tool for garages, field service sites, and dedicated diesel fuel equipment repair facilities dealing with both domestic and foreign production models .

The PS400A operates as a high-pressure hydraulic bench, utilizing a direct-acting pump mechanism to deliver a maximum pressure of 40 MPa (approximately 6000 PSI) , which is well within the testing envelope of most mechanical and early electronic unit injectors . The unit is equipped with a 0-40 MPa analog dial gauge for precise pressure readouts during the injection event. The tester includes a 1.0-liter fuel tank with an integral strainer to ensure the use of clean calibration fluid. The iron base provides a stable, vibration-dampening platform, ensuring that the delicate needle valve movements are accurately translated to the gauge. For immediate connectivity, the unit comes supplied with two essential high-pressure pipes: the M14xM12x150mm and the M14x14x150mm adaptors, allowing for versatile connection to a variety of injector thread types .

This test bench is specifically designed to bridge the gap between simple hand tools and complex electronic test rigs. It is utilized for testing and adjusting all types of injectors found in passenger cars, heavy-duty trucks, and agricultural tractors powered by diesel engines. Whether servicing a vintage mechanical engine or performing initial diagnostics on a modern common rail system's nozzle, the PS400A provides a controlled environment to validate component integrity. It is a common sight in independent diesel repair shops and mobile service units where technicians rely on its ability to verify sealing functions and injection parameters that directly affect engine performance, fuel economy, and cold-start reliability .

For a diesel repair workshop, the PS400A serves as the first line of defense against injector failure. While modern common rail systems require sophisticated electronics for full actuation, the hydraulic and mechanical aspects of the nozzle remain testable on this bench. It allows technicians to confirm the injection start pressure (pop pressure) and the quality of fuel atomization-two factors that are critical for combustion efficiency in high-pressure systems. The ability to test the tightness of the closing cone (visually checking for a "wet" nozzle or drop formation) helps prevent issues like carbon buildup and after-drip, which can cause severe engine damage. By identifying leaking nozzles or incorrect pressures before reinstallation, shops can significantly reduce comebacks and ensure that the diesel fuel equipment performs to OEM standards .

Q1: Does the PS400A support testing injectors used in modern Bosch Common Rail systems?
A: Yes, the PS400A can test the nozzle assembly and check the hydraulic tightness of the needle valve seat. However, it is a mechanical pop tester; it does not generate the high-frequency electrical pulses needed to actuate the solenoid or piezo elements of the injector body. It is ideal for testing the mechanical spray quality and pressure .

Q2: What calibration fluid is recommended for this tester, and how long can it be stored in the tank?
A: We recommend using clean, filtered light diesel fuel (No. 0, No. 1, or No. 2) that has been allowed to settle for at least 24 hours, or a standard pump calibration oil. Drain the tank and run a cleaning fluid through the system if the tester will be idle for more than a few weeks to prevent gumming .

Q3: Is the PS400A compatible with injector nozzles from older tractor models, such as those using 9/16 threads?
A: The PS400A includes an M14 thread adaptor. For older injectors featuring a 9/16x18 Ermeto thread, a specific adaptor is required, which can be sourced separately. The supplied pipes generally handle metric M12 and M14 sizes, covering most modern automotive and tractor injectors .

Q4: How does this tester compare to professional electronic test benches like those from Bosch?
A: The PS400A is a basic, portable mechanical bench suited for quick diagnostics and adjustments. Professional benches (e.g., Bosch DCI 700) test flow rates and actuation electronically at a much higher cost. This unit is perfect for garage settings or as a pre-scan tool to validate nozzle integrity before moving to more complex repairs .

Q5: As a wholesaler, do you offer support for parts replacement like the pressure gauge or seals?
A: Yes, the PS400A is designed for easy maintenance. The pressure gauge is a standard fitting, and the pump uses readily available O-ring seals. We recommend keeping a service kit on hand to ensure minimal downtime in your diesel workshop operations .

To make your purchasing experience smooth and easy, we offer a variety of secure payment options:

Bank Transfer

Supports multiple currenciesand bank payment methods.

Western Union

Quick and global money transfers.

PayPal

Safe and convenient online payment.

Alibaba

Enjoy extra protection with trusted Alibaba transactions.

We're here to make your order process worry-free - choose the payment method that works best for you!

Hot Tags: ps400a diesel injector nozzle tester (iron base) – 600 bar calibration bench, China ps400a diesel injector nozzle tester (iron base) – 600 bar calibration bench manufacturers, suppliers, factory