Description

Overview

Manual Slack Adjuster 10 Spline Curved 6in gives you direct, predictable adjustment on S-cam drum brakes, so you can set pushrod stroke correctly and keep braking balanced. The curved 6in arm suits 12 1/4in brake packages where clearance and linkage angle matter. Because slack adjusters sit at the centre of brake geometry, this variant helps maintain even lining wear when it is matched to the correct camshaft and clevis.

Features

• Manual adjustment lets you fine tune brake stroke during service checks
• 10 spline fitment suits 38mm (1 1/2in) S-cam shafts used on many heavy trailer brake assemblies
• The curved 6in arm profile supports common 12 1/4in drum brake layouts
• 1-hole arm design simplifies clevis alignment for straightforward set-up

Specifications and Materials

Part number: FB5025.

Refer to the HVIA braking best practice guide for inspection and servicing guidance

Compatibility and Fitment

To avoid uneven braking, confirm the camshaft spline size, arm length, and clevis pin diameter before installation. Manual Slack Adjuster 10 Spline Curved 6in suits 12 1/4in brake linkages when the spline and arm geometry match. Also check that the curved arm clears the chamber bracket and that the adjuster indexes correctly on the spline. This cross-reference listing means this part is a suitable replacement for the part numbers and applications shown, but some changes in installation may be required. WT5028, KN51000, FL10-353, OE5028, 10.353, HP403-01004

Compliance and Safety

Brake adjustment affects stopping performance, so inspect and set slack adjusters as part of routine brake servicing. Replace worn clevis pins, bushings, and chambers if they introduce free play that masks true adjustment. If you are unsure about stroke limits or inspection criteria, consult the relevant heavy vehicle inspection guidance and follow your workshop procedures.

Trailer Applications

Manual Slack Adjuster 10 Spline Curved 6in suits heavy trailer S-cam drum brake systems that use a 38mm 10 spline camshaft and a 1/2in clevis pin, particularly where a curved 6in arm is required. It fits many 12 1/4in brake set-ups used across general freight, tipper, and tanker trailers when the spline and linkage match.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Additionally, treat interchange lists as a starting point and confirm the spline and arm geometry on the vehicle.

Why Choose ICS Trailers

We focus on selection-critical brake parts, so you can order with confidence and reduce down-time. Our team can help you cross-check dimensions and application details when you are matching hardware across a fleet.

Browse Foundation Brakes parts at ICS Trailers today