The swing lock cable is a critical safety component in JCB construction machines, responsible for mechanically locking the excavator swing frame during transport. It connects the control lever inside the cab with the mechanical locking mechanism on the swing frame.
Proper operation of the cable prevents uncontrolled boom rotation, ensuring safe transport and machine operation.
Common symptoms of wear or failure:
– Inability to lock the swing frame in the transport position.
– Lock mechanism does not release when the lever is operated.
– Loose control lever with no resistance.
– Seized, stretched, or broken cable.
⚠️ Safety warning:
Operating a machine with an unsecured swing frame is extremely dangerous and may result in uncontrolled rotation, accidents, and serious machine damage.
Specifications:
– Type: Swing lock cable
– Function: Locks the excavator swing frame during transport
– Replaces / OEM numbers:
– 331/15632
– 910/50500
– 910/48500
Applications:
– JCB machines manufactured between 1997–2001
– Backhoe loaders equipped with a mechanical swing lock system
ℹ️ Additional information:
Later JCB models use a different swing lock system – always verify machine year and lock type before ordering.
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The swing lock cable is a critical safety component in JCB construction machines, responsible for mechanically locking the excavator swing frame during transport. It connects the control lever inside the cab with the mechanical locking mechanism on the swing frame.

















