Checking the Mount Lock Before Starting Work - A Simple Habit That Prevents Accidents

In short: Checking an attachment's lock takes a few seconds, but a failed lock can mean the attachment falling during work. This simple habit - a visual check and a light lift test before taking a full load - prevents most mount-related accidents.

Why this happens

A quick coupler can look locked even when the pin has only gone halfway, for example due to dirt, wear or careless handling. The machine operator doesn't always notice this from the cab if the mount hasn't been properly inspected. The problem shows up once the attachment is already moving with a load.

What to check before starting work

• Look at the locking pins visually: on both sides, the pin must be fully extended and in the position specified by the manufacturer.
• Listen and watch for locking: on a mechanical mount, the manual lock should click into place; on a hydraulic mount, the machine should show confirmation of the lock (a light, sound signal or other indicator, if the machine has one).
• Try a light lift and movement: before a full load, lift the attachment off the ground and move it slightly back and forth - if there's any play, the mount isn't properly in place.
• Check again after swapping attachments: every swap is a new chance for the pin not to seat fully.

When the check matters most

Checking the lock matters after every swap, but it matters even more after a longer break, a change of machine or operator, and before lifting something heavy or high, where a falling attachment does the most damage. For large loads and high lifts, for example with a forklift or telehandler, it's worth checking even more carefully, since an attachment falling from height is more dangerous than at ground level.

Common mistakes

• Rushing: the check gets skipped when in a hurry - and that's exactly when accidents happen most often.
• Ignoring mount wear: worn pins and bushings lock worse, but can still look fine from the outside.
• Ignoring dirt: dirt and small stones in the mounting area prevent the pin from seating fully.

If the mount starts developing frequent play

If the lock starts feeling looser or harder to move, that's usually a sign of worn mount parts rather than a random fault. In that case, check and, if needed, replace the worn parts before the problem becomes more dangerous. See all our attachments on the all attachments page.

If the mount feels worn or develops unusual play, write to us with the machine's and attachment's details, and we'll look at what's sensible to do. Get in touch via our contact page.