Description

Overview

Hendrickson camshaft D washer 38mm keeps the S cam located correctly on Hendrickson trailer brake assemblies. The D profile sits against the flat on the camshaft so it helps resist rotation and sideways movement under brake load. It also helps maintain consistent brake shoe clearance and even lining contact. As a result, correct washer selection supports safer, more predictable braking on loaded and unloaded trailers.

Features

This Hendrickson camshaft D washer 38mm provides straightforward location for the S cam in high duty trailer brake applications. It suits workshops that want genuine style hardware to match Hendrickson drum brake components and help reduce comeback risk. The listed dimensions also make it easier to compare against existing parts during overhaul.

• D shaped inner profile to suit 38mm camshaft flat
• Large 98mm outside diameter for backing plate support
• Approx 1.6mm nominal thickness for cam stack height
• Suited to Hendrickson drum brake trailer applications

Specifications and Materials

This camshaft D washer suits a 38mm camshaft journal and uses a D shaped bore to locate on the camshaft flat, with an outside diameter of approximately 98mm and nominal thickness of 1.6mm. Part number: FB3101H. Additionally, for more detailed guidance on drum brake components and service intervals, refer to this Hendrickson drum brake maintenance guide

Compatibility and Fitment

This washer suits Hendrickson trailer drum brake camshafts that use a 38mm D profile washer at the backing plate. Typically, it fits S cam style brakes on Hendrickson trailer axles where the original washer shares the same general dimensions. However, compare the inner profile, outside diameter and thickness with the removed washer before final installation. In addition, follow the relevant Hendrickson service documentation so the camshaft end play and hardware stack match OEM requirements.

Compliance and Safety

Heavy vehicle foundation brake hardware must support reliable braking under repeated high load. Therefore, install this Hendrickson camshaft D washer 38mm as part of a complete inspection of the S cam, bushings, seals and return springs. During service, chock wheels, isolate air supply and support the trailer safely before removing any brake components. Tighten retaining fasteners to the recommended torque and replace any worn or distorted hardware at the same time. Correct installation helps maintain compliance with heavy vehicle roadworthiness and fleet maintenance standards.

Trailer Applications

Workshops typically use this Hendrickson camshaft D washer 38mm on on highway semi trailers and similar equipment running Hendrickson trailer axles with drum brakes. It suits fleet brake relines, camshaft renewals and scheduled overhauls where Hendrickson suspension and axle systems are fitted. It can support both line haul and regional distribution duties where consistent braking and low downtime matter. If you maintain mixed fleets, match each washer to the specific axle and brake model on the job card.

Cross-reference and Suitability

Published manufacturer information for this washer does not list formal alternative part numbers. However, many camshaft D washers look similar, so relying only on appearance can lead to incorrect stack height or poor cam location. Instead, treat the 38mm bore, D profile and large outside diameter as critical dimensions when checking possible substitutes. When in doubt, confirm against Hendrickson documentation or use the removed washer as a direct pattern before approving any alternative for service use.

Why Choose ICS Trailers

ICS Trailers focuses on heavy vehicle trailer parts, so the team understands how foundation brake hardware performs in real fleet conditions. You can source camshaft D washers, S cams, bushes and related components in one place, which simplifies maintenance planning. Additionally, ICS aims to keep common Hendrickson brake hardware on the shelf for faster turnaround on workshop jobs. As a result, you can complete brake relines and camshaft repairs with parts selected specifically for heavy trailer applications. Browse more options in the Foundation Brakes category at ICS Trailers