Terex
Case drain hose for Terex BT4792
This upper case drain hose is designed for the winch motor assembly on the Terex BT4792 crane. It manages the return of internal leakage fluid from the motor housing back to the hydraulic tank.
Parts diagram
Compatible models
Specifications
- Part number
- 502-21012
- Brand
- Terex
The case drain hose with part number 502-21012 serves the winch motor on the Terex BT4792 crane. This component facilitates the return of hydraulic fluid from the motor casing to the reservoir, preventing the buildup of internal pressure that could otherwise compromise the integrity of the motor seals. By maintaining a clear path for fluid return, this hose ensures the motor operates within its design parameters during lifting and load-handling tasks.
This component is engineered for the specific hydraulic circuit of the Terex BT4792 winch system. It is sized and rated to handle the operating pressures and temperatures typical of this hydraulic application. Proper routing and connection of this drain line are necessary to maintain the hydraulic balance of the winch motor assembly.
Case drain lines are used in hydraulic systems to relieve pressure from the motor or pump housing. By allowing fluid that bypasses the internal working components to return to the tank, these lines prevent seal failure and overheating within the motor unit, which is necessary for the consistent operation of heavy machinery hydraulic systems.

