Description
Overview:
The Retainer Plunger Spring for Thor 234 Breaker is a non-genuine replacement part that restores the return action of the tool retainer mechanism. It replaces OEM part 43521 and is designed specifically for the Thor 234 breaker, ensuring correct function and dependable fit. Manufactured from high‐tensile spring steel with a protective black finish, this compression spring withstands heavy vibration and repeated impacts typical of demolition tools. By maintaining consistent pressure on the plunger, it helps keep chisels and tool bits securely retained during operation. Easy to install as part of routine servicing, it offers a practical, cost‐effective way to reduce downtime, support safe tool retention, and extend the working life of the breaker. Suitable for Thor 234 and equivalent Thor234 listings.
Key Features:
- Non-genuine replacement engineered to replace OEM 43521 seamlessly
- Built from high-tensile spring steel for strength and longevity
- Protective black finish to resist wear and surface corrosion
- Correct fit for the Thor 234 tool retainer plunger assembly
- Helps maintain secure bit retention and reliable tool engagement
- Stable performance under shock, vibration, and frequent tool changes
- Straightforward drop-in installation with basic hand tools
- Cost-effective maintenance part to prevent unplanned downtime
- Suitable for regular servicing schedules in site and workshop settings
- Identified as item #36 on the Thor 234 parts diagram for easy reference
Typical Applications:
Used in the retainer mechanism of Thor 234 breakers during concrete breaking, asphalt cutting, and general demolition tasks. Ideal for construction sites, highways maintenance, plant hire fleets, and workshop overhauls where consistent tool retention and smooth plunger return are essential for safe, efficient operation.
Also known as:
Retainer spring, plunger return spring, tool retainer spring, chisel retainer spring, breaker retainer spring, detent spring, lock spring for tool bit retention, return spring for retainer plunger, hammer spring for tool holder assemblies.
Fits Models:
Thor 234, Thor234
Alternate Part Numbers:
234/2112, 2342112, 43521
Product Specifications
| L&S Part No. | 234/2137 |
|---|---|
| OEM No. | 43521 |
| Unit of Sale | 1 |
| Applications | Thor 234, Thor234 |
| Machine Type | Breakers |
| Fits Brands | TEX |
| Fits Models | Thor 234 |


