SprayTech part 51831 is a cotter pin used to secure clevis pins, nuts, or other fasteners on compatible SprayTech Airless EP2400 sprayers. It prevents loosening and disassembly of critical components due to vibration during operation. Replacing a bent, missing, or worn cotter pin ensures reliable retention and safe equipment operation.
| Part Number | 51831 |
|---|---|
| Part Description | Cotter Pin |
| Brand | SprayTech |
| Fits | SprayTech Airless EP2400 |
| Condition | New |
The 51831 Cotter Pin is a simple yet critical fastener used to secure clevis pins, castellated nuts, and other components on the SprayTech Airless EP2400 sprayer. It is inserted through a hole in a bolt or pin and has its legs bent back to prevent the fastener from working loose due to vibration.
Cotter pins can become bent, broken, or lost during operation or maintenance. A missing or damaged cotter pin can allow critical fasteners to loosen, leading to component misalignment, damage, or unsafe operating conditions. Replacing it with a new 51831 cotter pin ensures positive retention and reliable equipment safety.
| Secures fasteners | Locks clevis pins, nuts, and bolts in place |
|---|---|
| Prevents loosening | Stops rotation or backing out due to vibration |
| Safety device | Ensures critical components remain assembled |
| Bent or deformed | Pin legs are misshapen and cannot be properly secured |
|---|---|
| Broken | Pin is snapped or missing one or both legs |
| Missing | Pin has fallen out during operation |
| Corroded | Rust weakens the pin and may cause failure |
SprayTech part 51831 is compatible with the following model. Always confirm fitment using the correct parts diagram for your exact model and revision.
| Model | Component |
|---|---|
| SprayTech Airless EP2400 | 51831 Cotter Pin |
When replacing a cotter pin, inspect these related components to ensure a complete and reliable repair.
The pin that the cotter secures may be worn or bent. Replace if damaged.
Nuts with slots for cotter pins can have damaged threads. Inspect and replace as needed.
Check for wear on washers or bushings in the assembly.
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