Overview
The ZF 4143.151.019 MULTIDISK BRAKE is a critical friction component engineered for precise torque interruption within the HL 100 and HL 270 series transmission assemblies. This OEM genuine part functions as a hydraulically actuated braking unit, engaging multiple friction disks to halt output shaft rotation under load. Positioned within the clutch pack housing, the 4143.151.019 directly interfaces with the 4143101043: HOUSING to ensure concentric alignment and pressure containment. Its primary role is to provide controlled deceleration during gear shifts and stationary holding, preventing driveline creep in heavy-duty industrial applications. The SKU 4143.151.019 is manufactured to ZF’s original tolerances, guaranteeing a direct fit without modification.
Symptoms of Failure
When the ZF 4143.151.019 multidisk brake degrades, operators typically notice three distinct failure modes. First, delayed engagement or brake chatter occurs during low-speed maneuvering, often accompanied by a grinding noise from the transmission housing. Second, hydraulic fluid contamination appears as dark, metallic particles in the oil filter, indicating friction material shedding from the disks. Third, unexpected vehicle rollback on inclines signals that the brake pack can no longer maintain static holding torque. Fourth, erratic shift quality manifests as harsh or slipping transitions between forward and reverse, directly linked to insufficient brake pressure. These symptoms often worsen when the 4143301055: HOUSING develops internal scoring, which accelerates disk wear.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4143.151.019 |
| Type | Wet Multi-Disk Brake Pack |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter | 120 mm (estimated) |
| Total Thickness | 42 mm (assembled) |
| Friction Material | Sintered Bronze on Steel |
| Weight | 2.8 kg (6.2 lbs) |
| Max Operating Pressure | 18 bar (261 psi) |
| OEM Reference | ZF 4143.151.019 |
| Torque Capacity | 850 Nm (estimated) |
Compatibility
This genuine ZF multidisk brake is specifically validated for use in the HL 100 and HL 270 series transmissions, which are commonly deployed in wheel loaders and forklifts. Based on its physical dimensions and spline configuration, the 4143.151.019 also fits the WG180, WG200, and WG210 torque converter models when paired with the correct 4143298040: CASE. The brake pack is not interchangeable with earlier 4143.150 series units due to revised disk count and friction lining composition. Always verify the 0631329135: SPRING PIN alignment during installation to prevent piston seal damage.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4143101043 | HOUSING | Encloses brake pack and aligns shafts |
| 4143301055 | HOUSING | Secondary housing for clutch drum support |
| 4143298040 | CASE | Main transmission casing for gear train |
| 0631329135 | SPRING PIN | Retains brake piston return springs |
| 0501214034 | SEALING CAP | Prevents debris ingress into brake cavity |
| 0636101024 | CAP SCREW | Secures housing to transmission case |
| 4475280099 | SCREW PLUG | Closes hydraulic test ports |
| 0634303266 | O-RING | Seals piston bore against fluid leakage |
| 4143301045 | SCREEN SHEET | Filters debris from brake cooling oil |
| 0636420051 | COUNTERSUNK SCREW | Fastens friction disks to hub carrier |
