Description

Overview

Automatic Slack Adjuster 10 Spline 38mm is built to maintain consistent brake adjustment on heavy trailer S cam brake systems, which can help reduce uneven lining wear and excessive pushrod stroke. Because correct selection matters, this automatic slack adjuster suits a 10 spline camshaft with a 38mm spline size and a 3 hole arm pattern. The multi length arm option also supports common set ups where lever geometry needs fine tuning to match chamber stroke and brake timing.

Features

• Automatic adjustment action supports stable brake stroke over time
• 10 spline input with 38mm spline size for the listed application
• 3 hole arm with multiple effective arm length positions
• Clevis pin sizing aligned to common heavy trailer hardware

Specifications and Materials

Part number: FB4970.

Refer to the manufacturer service manual for automatic slack adjusters to confirm inspection steps, functional checks, and correct set up procedure

Compatibility and Fitment

Before fitting, confirm the spline count and spline diameter, then verify the clevis pin diameter and the arm length position you will use. This automatic slack adjuster suits the listed Fuwa K Hitch application where a 10 spline 38mm camshaft is used, but confirm the camshaft orientation and required lever position during installation. Match the clevis pin diameter and hardware condition, then set the arm length position so the brake chamber stroke remains within specification.

Compliance and Safety

Brake adjustment directly affects stopping performance, so only trained technicians should install and set up brake actuation components. Perform a full brake function check after installation, including free movement, correct return action, and chamber stroke verification. Keep the unit maintained to the recommended inspection intervals because neglected slack adjusters can contribute to excessive stroke and reduced braking efficiency.

Trailer Applications

Automatic Slack Adjuster 10 Spline 38mm commonly suits heavy trailers running S cam foundation brakes on applicable axle and suspension packages. For example, it may be used on trailer axles fitted with Fuwa K Hitch running gear where the 10 spline 38mm camshaft specification applies. It is a practical choice for general freight trailers where consistent brake performance and reduced manual adjustment matter.

Cross-reference and Suitability

No verified cross reference part numbers were confirmed for this item from manufacturer cross reference documents or from two independent interchange sources, so only the specifications listed above should be used for matching.

Why Choose ICS Trailers

ICS Trailers supports heavy vehicle operators with parts that are selected for real world trailer service, so you can order with confidence when you have confirmed fitment. Our team can help you validate key measurements and application details so you get the right component the first time. Browse Foundation Brakes at ICS Trailers in the Foundation Brakes category for related parts.