Maintenance & Support

The success of Weichai is reinforced by the people who stand behind our products. Working with us means you receive end-to-end care of products and services and ensuring you're getting the most out of your investment. Our goal is maximum your satisfaction with the performance of Weichai products, services and our people.


    Maintanence & Service Manual:

    I. Maintenance Manual for Bus Engine

    WP2.3/WP2.3N Bus Engine

    Download

    WP3/WP3N Bus Engine

    Download

    WP3.7 Bus Engine

    Download

    WP4.1/WP4.1N/WP4.6N Bus Engine

    Download

    WP4/WP6 Bus Engine

    Download

    WP5/WP7 Bus Engine

    Download

    WP9H Bus Engine

    Download

    WP10H Bus Engine

    Download

    WP10 Bus Engine

    Download

    WP12 Bus Engine

    Download

    II. Maintenance Manual for Truck Engine

    WP2.3/WP2.3N Truck Engine

    Download

    WP3/WP3N Truck Engine

    Download

    WP3.7 Truck Engine

    Download

    WP4.1/WP4.1N/WP4.6N Truck Engine

    Download

    WP4/WP6 Truck Engine

    Download

    WP7 Truck Engine

    Download

    WP9H/WP10H Truck Engine

    Download

    WP10 Truck Engine

    Download

    WP12 Truck Engine

    Download

    WP13 Truck Engine

    Download

    III. Maintenance Manual for Marine Engine

    * Upon as your request


    Weichai Engine Diagnostic Software:

    The software is exclusively developed and researched by Weichai Power. Connected to ECU via DiagSmart, the device can transfer data to PC, smartphone via USB connection or Wifi. Through software, users can check the operating status of the engine, sensors as well as actuator components, can extract data files, data streams. It's supported the repair process as well as timely detection and handle big error.

    * DiagSmart 3.2.9 (updated Sep 2018 - Language: VN): Download

    * DiagSmart 3.2.15 (update for WP4.1N/WP4.6 - Language: EN-CN): Download


    Customer Assistance

    For general inquiries, questions regarding your Weichai products, or assistance locating authorized distributors or dealers, please complete the form below.

    Fill Out The Inquiry Form


    Or you can reach us by address: Contact Us