Sourcing Guide
Check Chenglong H7, H5, M3 and Balong automatic slack adjusters by complete OE number, axle position, side, spline details and old-part photos.
Automatic slack adjusters for Chenglong trucks can have a similar forged arm and housing shape while using different axle positions, sides or spline arrangements. A reliable brake-parts order should begin with the complete part number on the removed unit, then confirm the vehicle, axle location, installed direction and physical interface before a replacement is released.
The Dongfeng Liuzhou Chenglong automatic slack adjuster range includes reference options for Chenglong H7, H5, M3 and Balong applications. It is suitable for fleet maintenance, workshop replenishment and mixed brake-parts orders where each line needs to be checked against the actual vehicle configuration.
Brake adjuster references can differ by a short suffix, and that difference may identify a separate axle position or mechanical arrangement. Record every letter, digit and separator on the old part or purchase list. A partial number, exterior color or approximate arm shape should be used only as a starting point for comparison.
For Chenglong fleet work, label the removed part with its vehicle and axle position before it leaves the truck. This keeps front and rear axle items, as well as left and right positions, from being mixed together when a workshop prepares several replacement lines at once.
The current range records the following references for Chenglong H7, H5, M3 and Balong applications. They are useful search and matching clues; final selection still requires the physical and installation checks described below.
| Reference | Vehicle Coverage | Check Before Release |
|---|---|---|
| JY3552R240-015-LZ | Chenglong H7, H5, M3 and Balong applications | Axle position, side, spline or tooth count and old-part marking. |
| JY3552R240-010-LZ | Chenglong H7, H5, M3 and Balong applications | Installed orientation, spline interface and arm geometry. |
| FS35021302MF-Z / FS35021402MF-Z | Chenglong H7, H5, M3 and Balong applications | Position, side and a clear photo of the complete old unit. |
| JY3552R240-010-ZA / JY3552R240-015-ZA | Chenglong H7, H5, M3 and Balong applications | Axle configuration, spline details and pushrod connection. |
| FS35021302MAS-Z | Chenglong H7, H5, M3 and Balong applications | Complete number, spline or tooth count and mounting layout. |
One truck model can use different axle suppliers or brake layouts. The model name helps narrow the search, but the OE reference and physical comparison should take priority whenever the information conflicts.
An automatic slack adjuster connects the brake chamber pushrod to the brake camshaft in a drum-brake system. Its position relative to the camshaft and pushrod matters. A unit with the wrong installed direction or arm geometry can cause poor pushrod alignment even when its outer housing appears similar.
Take one photo before removal that shows the brake chamber, the camshaft end and the adjuster together. That installation image can show whether the arm is positioned forward or rearward and gives the matching process context that a bench photo cannot provide.
For a multi-truck service order, place confirmed references and photo-pending references on separate lines. Related truck brake parts can be listed in the same request, but each adjuster should retain its own vehicle, axle and side information. This reduces the risk of ordering visually similar parts for different positions.
Mixed orders may also include routine maintenance items. Keeping quantity, part number and fitment evidence together makes it easier to review the complete purchase list before packing and shipment.
Send the complete OE reference, Chenglong vehicle model, axle position, installed side, required quantity and old-part photos. Add a spline close-up and an installed view when possible. These details allow the brake adjuster to be checked against the actual vehicle rather than selected from a broad model name alone.
Send a Chenglong brake parts inquiry with the part list and photos for matching support.
Use this guide to organize a clearer quote request instead of choosing from a short product list.
Part number, truck brand, model, engine model, chassis number and old-part photos help confirm the correct replacement before quotation.
Filters, brake parts, clutch parts, chassis parts, cab parts, bearings, sensors and assemblies can be checked together for one practical order.
Share quantity, packing preference and whether the order is for fleet repair, workshop use or distributor stock.
Send part numbers, truck models, chassis numbers, old-part photos or sample photos. We can help check multiple items and combine them into a practical export order.