Quick Couplers: Maintenance & Faults
Objectives
- Explain the importance of cleaning quick couplers before connecting them.
- List common faults with quick couplers.
Why Quick Couplers?
Quick couplers are easily overlooked as simple, passive components, but they are an important part of a hydraulic system.
A neglected quick coupler can easily become a point of failure.
Keep It Clean
Using contaminated (dirty) hydraulic fluid is the quickest way to shorten the life of a hydraulic system.
One of the easiest ways to introduce contaminants is through the quick couplers.
- Directional valves stick.
- Relief valves won't close.
- Pumps wear out faster.
- And so on...
This is why the cap should be replaced on a quick coupler whenever it is not in use.
More importantly, the quick coupler needs to be sprayed with lubricant, or wiped down with a clean cloth before it is connected.
Keep in Mind
- Just because a quick connector looks clean doesn't mean that it doesn't need a quick wipe, or some spray lubricant.
- Damaging contaminants can be much smaller than the human eye could ever detect!
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