1977 Dunbier H3262 Mackay Mechanical Caliper Spring (Coil Type) | Marine Trailer Part

🔧 Product Description

Dunbier Mechanical-Caliper Return Spring - Coil Type - Part Number: 1977

A replacement coil return spring for the relevant Dunbier mechanical disc-brake caliper. It returns the operating arm and internal mechanism after cable tension is released, helping the pads clear the rotor.

⚙️ Key Features

• Coil-type caliper return spring

• Suits compatible Dunbier mechanical calipers

• Restores operating-arm return force

• Helps prevent brake drag and overheating

• Direct service replacement for the original spring style

📏 Specifications

• Mackay reference: H3262

• Spring type: Coil

• Application must be confirmed by comparing the installed caliper version

🔄 Cross Reference & Related Parts

• Dunbier: 1977

• Mackay: H3262

• Mechanical caliper: Dunbier 1971

• Wishbone spring-and-bolt version: Dunbier 1979

🚤 Trailer Compatibility & Application

• Suits the mechanical caliper version originally fitted with a coil spring

• Not interchangeable with the wishbone spring without confirming the caliper design

• Replace both axle-side springs if age and corrosion are similar

🔌 Function

Returns the caliper lever to the released position when brake-cable pull is removed.

Common signs of wear or replacement:

• Brake lever returns slowly or incompletely

• Spring is stretched, broken or heavily rusted

• Brake pads remain in contact with the rotor

• Spring hooks are worn

• Caliper overheats after towing

🛠️ Installation & Safety

• Release cable tension before spring removal

• Use appropriate eye protection and spring tools

• Fit the spring in the original anchor positions

• Check the lever returns positively

• Readjust cable free play after installation

📦 Condition

• Brand new Dunbier Marine Products trailer component

• Supplied as one coil-type mechanical-caliper spring

• Supplied in original or equivalent packaging