Terex
Boom cylinder lock valve for Terex TX760B
This lock valve is a component of the boom cylinder hose burst protection system for the Terex TX760B backhoe loader. The part number 6112267M91 is designed to maintain boom position in the event of a hydraulic line failure.
Parts diagram
Compatible models
Specifications
- Part number
- 6112267M91
- Brand
- Terex
The boom cylinder lock valve functions as a safety component within the hydraulic circuit of the Terex TX760B backhoe loader. It is integrated into the boom cylinder hose burst protection system to manage hydraulic fluid flow. If a sudden drop in pressure occurs due to a hose rupture, the valve engages to prevent the uncontrolled collapse of the boom, holding it in its current position until the system is stabilized.
This specific component is compatible with the Terex TX760B model. It operates as a pilot-operated check valve or counterbalance valve, reacting to pressure changes within the hydraulic lines to protect the machine and the operator from rapid, unintended boom descent. It is manufactured to meet the technical requirements of the Terex hydraulic system.
Lock valves of this type are used in heavy machinery to provide hydraulic locking of cylinders. By blocking the flow of oil when the control valve is in the neutral position or when a pressure loss is detected, these valves ensure that the load remains supported and the boom stays fixed during operation.

