Description

Overview

This camshaft D washer general purpose supports camshaft location and hardware stacking on heavy trailer drum brake assemblies. It sits over the camshaft and bears against spiders or other hardware to help keep the S camshaft aligned during brake operation. As a result, workshops can replace worn washers during brake work and keep the hardware layout close to the original design.

Features

This camshaft D washer general purpose uses a D shaped profile to help stop the washer rotating on the shaft so it stays aligned against the support face. The 38mm inner diameter suits common camshaft sizes used on heavy trailer axles, which makes selection straightforward in the workshop. The 98mm outer diameter also spreads load over a wider area and supports stable hardware stacks around the camshaft. The general purpose design suits routine brake maintenance where the sizes and profile match.

• D shaped profile to help prevent rotation on the shaft
• 38mm inner diameter to suit common heavy trailer camshaft sizes
• 98mm outer diameter to spread load across the support face
• General purpose washer profile for routine brake service where dimensions match

Specifications and Materials

This camshaft D washer general purpose suits camshafts that require a 38mm inner diameter and a 1.6mm thick D shaped service washer. Confirm the washer fits over the camshaft cleanly and seats flat against the spider or mounting surface before final assembly. Part number: FB3101. For general background on different washer types used in mechanical joints, see this retaining washer overview

Compatibility and Fitment

This washer suits general purpose camshaft applications on heavy trailer drum brakes where a D shaped washer with 38mm inner diameter and 98mm outer diameter is specified. Before fitting, check the axle or brake parts listing, compare the old washer against the new one and confirm the camshaft end float remains within the axle maker’s limits. In addition, verify that the washer does not foul bushes, seals or circlips and that it sits fully home against the support face once torqued.

Compliance and Safety

Correct camshaft hardware selection supports safe foundation brake performance, so only competent personnel should carry out this work. Always chock wheels, isolate the vehicle and follow lockout and tagout procedures before removing any brake hardware. Inspect the camshaft, bushes and spiders for wear or cracking and replace damaged components rather than trying to reuse them with a new washer. After reassembly, perform a controlled brake test and visual inspection to confirm smooth camshaft rotation and consistent brake response.

Trailer Applications

This camshaft D washer general purpose works with many heavy trailer drum brake installations that use camshaft mounted hardware stacks. You will most often see it used on freight, tanker and general purpose semi trailer axles where the camshaft runs through bushes and spiders. Keeping the correct washer profile in stock can also help fleets standardise brake repairs across multiple trailers and reduce downtime in the workshop. For mixed fleets, match the camshaft D washer general purpose to the axle and brake setup on the job card before fitment.

Cross-reference and Suitability

No specific OEM or aftermarket cross reference part numbers are listed in available technical sources for this washer. Instead, selection should rely on the camshaft diameter, washer profile, axle identification plate and the brake parts documentation supplied for the trailer so that the hardware layout matches the original design.

Why Choose ICS Trailers

ICS Trailers focuses on heavy trailer parts, so our team understands how small items such as camshaft washers affect day to day brake reliability. In addition, we work to stock practical brake hardware that matches the camshafts, bushes, washers and spiders found on common Australian trailer axles. For related brake hardware, browse our Foundation Brakes category at ICS Trailers