A lever block is an essential lifting and pulling tool widely used in industrial and construction settings. However, like any mechanical device, it can sometimes become stuck or jammed, making operations difficult and unsafe.
At MIT Hoist, we understand how frustrating a stuck lever block can be, especially when time-sensitive lifting jobs are at stake. This blog post will help you identify the causes of a jammed lever block and provide step-by-step instructions to fix it efficiently.
Common Causes of a Stuck Lever Block
Before attempting any repairs, it’s crucial to understand the possible reasons behind a stuck lever block. Here are the most common causes:
1. Overloading
Exceeding the weight capacity can put excessive strain on the internal mechanisms, causing the ratchet and pawl system to lock up.
2. Rust and Corrosion
If the lever block is exposed to moisture and not maintained properly, rust and corrosion can jam the moving parts.
3. Dirt and Debris Buildup
Dust, grease, and dirt can accumulate inside the gear system, preventing smooth operation.
4. Improper Handling
Pulling or jerking the handle too aggressively can misalign the internal mechanism and cause it to seize up.
5. Worn-Out Internal Components
Over time, frequent use can wear down gears, pawls, and ratchets, leading to functional issues.
How to Fix a Stuck Lever Block
Once you’ve identified the cause, follow these steps to resolve the issue and restore the lever block to working condition.
Step 1: Ensure Safety First
Before starting the repair process, take the necessary safety precautions:
- Wear gloves and protective eyewear.
- Remove any load attached to the lever block.
- Place the tool on a clean and stable surface.
Step 2: Inspect for External Obstructions
Check if there are visible objects like small stones, grease buildup, or damaged chains causing the jam. Clean the surface and remove any blockages.
Step 3: Apply Lubrication
If the lever block is stuck due to rust or corrosion, use a high-quality lubricant or penetrating oil to loosen the jammed parts.
- Spray lubricant into the chain, gears, and ratchet mechanism.
- Allow it to sit for a few minutes before gently operating the handle.
Step 4: Operate the Handle Gently
Slowly move the handle back and forth to see if the jam loosens. Avoid excessive force, as this could worsen the issue.
Step 5: Disassemble and Clean the Internal Components
If the problem persists, carefully open the lever block following these steps:
- Use a screwdriver or wrench to remove the external casing.
- Inspect the internal components, including the ratchet, gears, and pawls.
- Clean all parts using a degreaser and a brush.
- Apply fresh lubricant before reassembling the unit.
Step 6: Check for Damaged Components
If any part appears cracked, worn, or broken, replace it immediately. Contact MIT Hoist for genuine spare parts to ensure durability and compatibility.
Step 7: Reassemble and Test
After cleaning and lubricating the internal mechanism:
- Carefully reassemble the lever block.
- Test it with a light load to ensure smooth operation before full use.
Preventative Maintenance Tips
To avoid future issues with your lever block, follow these maintenance practices:
- Regular Cleaning and Lubrication
- Proper Storage
- Inspect Before Use
- Avoid Overloading
- Schedule Periodic Maintenance
MIT Hoist— A Reliable Provider of Crane Components
A stuck lever block can be a significant inconvenience, but with the right approach, it is fixable. By identifying the cause and following the step-by-step guide, you can restore functionality and ensure smooth operation. Regular maintenance, proper handling, and using quality lifting accessories like magnet lifter and snatch block can further enhance the longevity of your lifting equipment.
At MIT Hoist, we offer premium lifting solutions, including lever block, cable pullers, and magnet lifter to ensure safe and efficient material handling. If you need assistance, don’t hesitate to contact our team of experts!