CAT900 HEUI Injector & HEUP 320D Pump Simulator

CAT900 System Tester portable test simulator for CAT HEUI fuel system. Perform off‑line diagnosis on HEUI pump, 320D fuel pump and HEUI injectors for C7, C9, 3126B, 3408, 3412 engines. Touch‑screen operated workshop diagnostic equipment for Caterpillar engine overhaul.
CAT900 HEUI Injector & HEUP 320D Pump Simulator

Product Overview

The CAT900 System Tester is a professional touch‑screen ECU signal simulator dedicated to Caterpillar HEUI fuel system repair. It supports off‑bench testing for HEUI actuating pump, CAT 320D high‑pressure fuel pump and series HEUI injectors, removing dependence on large comprehensive test bench.

Core Test Functions

• HEUI Pump Test：Test Caterpillar HEUI actuating pump, check solenoid status, pressure build‑up and flow performance

• 320D Pump Test：Offline diagnosis for CAT 320D high‑pressure fuel pump

• HEUI Injector Test：Drive and test HEUI injectors, check solenoid, spray performance and back‑leakage

• Settings：Adjust pulse width, injection frequency and pressure parameters; save & recall custom test profiles

Main Features

• 7‑inch touch‑screen for simple and intuitive operation

• Simulate genuine OEM ECU driving signals for Caterpillar HEUI fuel system

• Real‑time display of pressure, current and rotational‑speed data

• Save custom test parameter groups for quick recall

• Complete set of dedicated wiring harness included

• Portable design, no requirement for large full‑size test bench

Compatible Units

Pump Drivers

• HEUI Actuating Pump

• CAT 320D Fuel Pump

Injector Drivers

• 3126B HEUI Injector

• C7 & C9 HEUI Injector

• 3408 & 3412 HEUI Injector

Application Scenarios

Suitable for diesel repair workshops, injector remanufacturing factories and engine service centers. Widely used for fault diagnosis, overhaul and performance verification for Caterpillar heavy‑duty excavators and diesel engines.

Package List

• 1 × CAT900 System Tester Main Unit

• 1 × Full Set of Special Wiring Harness

• 1 × Operation Manual