Sourcing Guide
Before fitting a Foton Auman, JAC Gallop K7 or Beiben automatic slack adjuster, compare the complete part number, installed side, axle position, spline detail, arm layout and old-part photos.
A replacement automatic slack adjuster should be checked when it arrives, before the old unit is removed or the new unit is fitted. This is especially useful for a purchase list covering Foton Auman, JAC Gallop K7, Beiben and JAC light-truck applications. Several references can have a similar forged arm and circular spline opening, while the installed side, axle position or connection geometry is different.
Start with the complete marking on the purchase list and the part itself. Then compare the receiving item with the removed adjuster and an installed photo from the vehicle. The goal is to retain the information that is easy to lose once parts from different axles are placed on the same workbench.
Make one line for each required adjuster. Record the truck model, front or rear axle, left or right installed side, quantity and the complete reference. If the old part is still fitted, photograph the brake chamber pushrod, adjuster arm and camshaft area together before removal. That wide image preserves the direction of the arm in service and gives useful context for the replacement check.
Do not use a loose product image by itself to identify a brake position. A correctly shaped arm can still have the wrong spline interface, side orientation or mounting arrangement. The old part and the vehicle record should be compared together.
The following numbers are useful identification clues for the Foton Auman, JAC Gallop K7, Beiben and JAC light-truck product family. They should be checked against the actual axle and removed component before fitting.
| Reference | Recorded Check Point | Evidence to Keep |
|---|---|---|
| 3551.31B4C-040 | Confirm spline or tooth detail. | Complete marking, spline close-up and installed view. |
| 90150056 / 90150037 | Confirm position and installed side. | Old-part photo showing the arm and brake chamber connection. |
| 90150031 / 90150030 | Confirm spline or tooth detail. | Straight-on spline photo and full-arm view. |
| AK35021404LJH1-Z / AK35021304LJH1-Z | Confirm position, side and spline detail. | Complete number, axle position and old-part photos. |
| AK35021304MCS / 3502Z91-050 | Confirm the installed side and arm arrangement. | Installed view, spline close-up and arm end-hole image. |
| QT440SH36-3551010 / QT440SH36-3551020 | Confirm position, side and spline detail. | Axle record, full marking and removed-part images. |
Where an old number is dirty, worn or incomplete, keep it as unreadable rather than filling in a guessed suffix. A well-lit close photo of every visible marking, plus the installed and removed views, is more useful for comparison than an uncertain number.
The center spline opening connects to the brake camshaft; the forged arm connects to the brake chamber pushrod. Both areas need to agree with the old part. Take a straight, close photo of the spline opening with good lighting, then photograph the entire arm from both sides. The arm length, offset, end-hole position and visible fittings help distinguish parts that look similar from above.
If a tooth count is available, include it with the photo. If it cannot be read confidently, do not estimate it from an angled image. Mark the detail for confirmation and provide a clear spline close-up instead.
Side information can be lost after removal, particularly when several axle positions are being serviced at once. Label each carton or line item with the vehicle, axle and installed side. Use the driver-facing left/right convention consistently and retain the pre-removal photo with the order record. This makes it easier to compare an arriving item with the exact position it will serve.
For multi-axle vehicles, add an axle nameplate photograph where it is available. The truck model name is a useful search term, but axle and brake configurations can vary. The nameplate and original part provide stronger evidence for the final check.
Confirmed adjusters can be supplied with other truck brake parts, filters and maintenance items in one mixed order. Keep every adjuster on its own line with its reference and axle information. This allows multiple truck parts to travel together while each fitment check remains clear.
For a Foton Auman, JAC Gallop K7 or Beiben slack adjuster request, send the complete reference, truck model, axle position, installed side, required quantity, old-part photos and an installed image where possible. Include the spline and arm details if they can be photographed clearly. This provides a practical basis for checking the replacement before quotation and fitting.
Send a 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.
Continue by brand, model or part system when the inquiry needs more specific matching clues.
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.