Description

Overview

This camshaft circlip 1 5/8 inch Fruehauf Propar secures the S camshaft on heavy trailer brake assemblies. It locks into the groove on the camshaft to retain bushes, washers and other hardware under braking loads. As a result, it helps keep the camshaft in the correct axial position and reduce the chance of movement or hardware loss.

Features

This camshaft circlip 1 5/8 inch Fruehauf Propar matches the typical groove size used on Fruehauf Pro-Par style camshafts. The circlip profile allows installation and removal with standard circlip pliers, which helps speed up workshop jobs. In addition, the defined inner diameter supports consistent end float control when you replace bushes or washers during brake overhauls.

Specifications and Materials

This camshaft circlip 1 5/8 inch Fruehauf Propar suits camshafts with an inner groove diameter of about 38mm and a nominal thickness of 1.5mm, as commonly used on Fruehauf Pro-Par trailer axles. It is intended for use on steel camshafts that run in separate bushes and support washers at the brake spider. Inspect the groove for wear, corrosion or damage and replace any camshaft that shows excessive groove wear before fitting a new circlip. Part number: FB3100. For general background on how circlips and retaining rings secure components on shafts, see this retaining ring overview article from an independent engineering reference source

Compatibility and Fitment

This circlip suits Fruehauf Pro-Par style camshafts where the parts catalogue specifies a 1 5/8 inch camshaft and a 38mm groove for the retaining ring. In addition, confirm the camshaft diameter, groove position and brake model against the axle identification plate and parts listing before installation. After fitting the circlip, check that the camshaft rotates freely, the axial float sits within the axle maker’s limits and the hardware stack sits firmly against the shoulder.

Compliance and Safety

Correct camshaft retention is critical for foundation brake performance, so only trained personnel should fit this circlip. Always chock wheels, isolate the vehicle and follow workshop lockout and tagout procedures before working on brake hardware. Wear eye protection when removing or installing circlips because they can release stored spring energy. After reassembly, perform a controlled brake test and visual inspection to verify smooth camshaft rotation and consistent brake response.

Trailer Applications

This camshaft circlip 1 5/8 inch Fruehauf Propar supports drum brake axles on heavy trailers that use Fruehauf Pro-Par style camshafts, including many freight, tanker and general freight applications. Typically it is replaced during brake relines, camshaft bush changes or full spider rebuilds. Keeping the correct camshaft circlip 1 5/8 inch Fruehauf Propar on hand can also help fleets standardise brake repairs across multiple trailers that share the same camshaft family.

Cross-reference and Suitability

No specific OEM or aftermarket cross-reference part numbers are listed in available technical sources for this circlip. Instead, base selection on the camshaft diameter, groove size, axle identification and the brake parts documentation supplied for the trailer. This approach helps ensure the circlip matches the original hardware design and maintains secure retention of the camshaft assembly.

Why Choose ICS Trailers

ICS Trailers specialises in heavy trailer parts, so our team understands how small items such as camshaft circlips affect day to day brake reliability and workshop uptime. In addition, we focus on stocking practical brake hardware that matches the camshafts, bushes, washers and spiders found on common Australian trailer axles. For related hardware and brake components, browse our Foundation Brakes category at ICS Trailers today.