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PT301 Cummins PT Fuel Injector Leakage Tester and Seal Test Bench
The PT301 Leakage Tester is a specialized diagnostic instrument engineered to provide rigorous seal and pressure leakage tests for Cummins PT fuel injectors. It is fully compatible with 5/16" and 3/8" PTB, PTC, PTD, and 3/8" overhead PTD injectors. Known for its extraordinary sampling speed and stable properties, the PT301 allows technicians to accurately detect microscopic leaks in the cylinder block, cylinder seals, and ball check valves. This compact and portable stand is an essential tool for ensuring the integrity of the fuel system, preventing fuel dilution, and maintaining optimal engine combustion efficiency.













The PT test bench is purpose-built for Cummins PT (Pressure-Time) fuel injection systems used in heavy-duty diesel engines. The PT type system uses a mechanical governor with fuel pressure and injection timing controlled by the rotary throttling action of the PT pump. Supported engine families include Cummins N14 / NTA855 / M11 / ISM / ISX / QSX / QSK / K19 / K38 / K50, and Cummins STC (Step Timing Control) / PT(K) / PT(G) / PT(GC) / PT(FCP) fuel systems.
The platform provides high-precision pressure measurement, flow rate analysis and air leakage detection for Cummins PT pumps and injectors. Calibration profiles cover idle speed, rated speed, full load and torque curve. Integrated mechanical governor testing allows verification of throttle shaft operation, idle spring tension and transfer pressure.
Q1. What Cummins engine families are supported?
A: Cummins N14 / NTA855 / M11 / ISM / ISX / QSX / QSK / K19 / K38 / K50 and STC / PT(K) / PT(G) / PT(GC) / PT(FCP) fuel systems.
Q2. Does the platform test PT injectors?
A: Yes. PT injector leakage, opening pressure and injection quantity are tested with high precision.
Q3. Is mechanical governor testing included?
A: Yes. Throttle shaft operation, idle spring tension and transfer pressure calibration are integrated.
Q4. What is the operating voltage?
A: Standard 380V three-phase industrial power with optional 220V single-phase for small workshops.
Q5. Is the platform suitable for heavy-duty diesel service centers?
A: Yes. The industrial-grade design supports continuous commercial operation for mining, marine and heavy-truck service centers.
The Cummins PT test platform covers PT (pressure-time) fuel injection systems for Cummins NH / NT / NTC / NTA 855 series, KTA19 / KTA38 / KTA50 marine and industrial engines, and PT(K) type injectors for diesel generator sets. Representative OEM references include Cummins 3047978 / 3054218 / 3054220 / 3067264 PT injectors, Cummins 3042524 / 3047974 PT fuel pumps, and Cummins 3801477 / 3802658 PT(K) injectors.
The platform performs PT injector opening pressure calibration, injection quantity calibration under rated speed and load, leakage / sealing tests at idle and high-pressure conditions, and return-flow measurement for PT type fuel injection systems without engine dismount.
Q1. Which Cummins engine families are covered?
A: NH / NT / NTC / NTA 855, KTA19 / KTA38 / KTA50, and PT / PT(K) type injector applications.
Q2. Can the platform test both PT pumps and PT injectors?
A: Yes. The platform supports both PT fuel pumps and PT / PT(K) injectors with dedicated adapters.
Q3. Is the platform suitable for marine and generator set service?
A: Yes. The industrial-grade design is built for marine engine and diesel generator set maintenance.
Precision Leak Detection: Specifically designed to identify even the smallest air leaks in PT fuel injector components.
Broad Compatibility: Supports a wide range of Cummins injectors, including 5/16" and 3/8" PTB, PTC, and PTD models.
Rapid Sampling Speed: Features advanced pneumatic sensing for quick data acquisition and high testing throughput.
Comprehensive Seal Analysis: Provides dedicated testing for the injector cylinder block, cylinder seals, and ball check valve integrity.
Stable & User-Friendly: Engineered for convenient operation with a robust clamping mechanism that ensures reliable results every time.
Portable Benchtop Design: Lightweight and compact dimensions make it easy to integrate into any diesel service workshop.
High Clamping Force: Features a powerful 1960 N clamping force to ensure a perfect airtight seal during the diagnostic process.
Remote Diagnostics: Online support via TeamViewer and remote desktop tools for software configuration, calibration profile updates and database upgrades.
Spare Parts Supply: Genuine spare parts available for shipment within 48 hours from the regional service center.
Training and Onboarding: On-site or remote operator training covering operation, calibration and software upgrades.
12 Months Warranty: Full machine warranty covers spare parts and remote support for one year after delivery.
Remote Diagnostics: Online support via TeamViewer and remote desktop tools for software configuration, calibration profile updates and database upgrades.
Spare Parts Supply: Genuine spare parts available for shipment within 48 hours from the regional service center.
Training and Onboarding: On-site or remote operator training covering operation, calibration and software upgrades.
12 Months Warranty: Full machine warranty covers spare parts and remote support for one year after delivery.
| Technical Specification | Parameter Details (Model PT301) |
|---|---|
| Compatible Injectors | 5/16" and 3/8" PTB, PTC, PTD, and 3/8" Overhead PTD |
| Number of Injectors Tested | 1 Set (Single Station) |
| Air Test Flow Range | 5 ~ 150 ml/min |
| Injector Clamping Force | 1960 N |
| Primary Functions | Cylinder Block, Cylinder, and Ball Check Valve Seal Test |
| Machine Dimensions (L*W*H) | 740 * 360 * 620 mm |
| Net Weight | 20 Kg |
| Operation Mode | Manual Clamping / Pneumatic Testing |



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