Crocodile Garage Doors Problems
Crocodile garage doors are popular choices for many homeowners, offering durability and a streamlined look. However, like all mechanical devices, they can experience issues. Based on the experiences of several users, here’s a detailed breakdown of a particular problem faced with these garage doors and the potential solutions.
The Problem: A user reported a problem with their garage door unit, which appeared identical to the popular Crocodile-supplied units often advertised on TV. The door malfunctioned by opening further than intended, jamming on the roll. As a result, the motor continued to run and may have suffered internal damage. On trying to release it, the door rapidly closed, and the motor made a noise but hardly moved the door. The problem seemed to lie with the internal drive system.
Additionally, the manual open/close crank did not provide any resistance, suggesting another potential issue with the internal mechanisms.
Potential Causes and Solutions:
- Sheer Pin Issue:
- Cause: It’s believed that there’s a sheer pin in the shaft designed to protect the motor and gearbox. A sheer pin, similar to a roll pin, is meant to snap when subjected to excessive torque. If the pin breaks, it can prevent the door from functioning properly.
- Solution: Check the sheer pin for damage. If broken, it will need to be replaced.
- Motor Issues:
- Cause: Examination of the door’s motor indicated that it was of a low voltage variety. Although the motor seemed to be running, its exact state remained uncertain.
- Solution: Disassemble and inspect the motor for any signs of wear, breakage, or internal damage. If found to be faulty, replacing the entire motor might be the best solution.
- Drive Shaft Problem:
- Cause: Further inspection revealed that the drive shaft, about 3/8″ in diameter, appeared to have snapped. This shaft is critical for the operation of the door.
- Solution: A replacement unit can be procured for around £60. Alternatively, there’s the option of repairing the current unit and keeping it as a spare.
- Safety Concerns:
- Cause: One alarming discovery was that if the sheer pin fails, there’s nothing to stop the door from rapidly descending, potentially causing injury or damage.
- Solution: It’s crucial to frequently inspect the sheer pin and other internal mechanisms for signs of wear. If there’s a noticeable reduction in the sheer pin’s diameter, it should be replaced as a precaution.
- Alternative Repair Suggestions:
- For the snapped shaft: One can cut a slot into the end of each shaft and join them with thin steel. This would involve drilling through the steel to fit a couple of small split pins. Another method involves using a tight-fitting tube, pinned to each shaft section.
In conclusion, while Crocodile garage doors are a popular and durable choice, it’s essential to be aware of potential issues and their solutions. Regular inspections and maintenance can go a long way in ensuring the longevity and safe operation of these doors. If you’re not confident in handling these issues on your own, it’s always a good idea to consult with a professional or the manufacturer directly.