Overview
The ZF 0501.332.270 BRAKE is a critical OEM genuine component engineered for the high-torque demands of construction machinery transmissions. This part functions as a dynamic braking mechanism within the planetary gear set, providing controlled deceleration and holding torque for heavy equipment. Specifically designed to interface with the 4699101108: HOUSING, this brake assembly ensures that the transmission can safely manage load shifts and stationary holds under extreme stress. The SKU 0501.332.270 is a direct replacement unit, manufactured to ZF’s original tolerances for reliable performance in excavators, wheel loaders, and crawlers.
Symptoms of Failure
- Transmission brake drag or incomplete release: If the 0501.332.270 brake fails to disengage fully, operators will notice sluggish acceleration and increased fuel consumption, often accompanied by a burning smell from overheated friction material.
- Oil contamination with metallic debris: Worn brake plates shed fine metal particles into the hydraulic circuit. This is a classic sign of brake pack degradation, detectable during routine oil analysis.
- Intermittent loss of holding power on inclines: When the brake cannot maintain static torque, the machine may roll backward on slopes, a dangerous failure mode that requires immediate replacement of the 0501.332.270 unit.
- Erratic gear engagement or slipping: A failing brake can cause the transmission to hunt between gears or slip under load, as the clutch pack cannot properly synchronize with the 0501329881: HOUSING COVER assembly.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.332.270 |
| Type | Wet Multi-Disc Brake (Spring-Applied, Hydraulic-Release) |
| Outer Diameter | 210 mm (8.27 in) |
| Inner Diameter | 145 mm (5.71 in) |
| Thickness (Pack Height) | 42 mm (1.65 in) |
| Material | Sintered Bronze Friction Plates / Hardened Steel Separators |
| Weight | 1.8 kg (3.97 lbs) |
| OEM Reference | ZF 0501.332.270 (Genuine) |
| Operating Pressure | 12–18 bar (174–261 psi) |
Compatibility
This brake assembly is a direct fit for ZF’s heavy-duty powershift transmission series used in construction machinery. It is commonly found in the WG180, WG200, and WG250 models, as well as the 4WG-200 and 6WG-250 variants. The 0501.332.270 brake interfaces with the 0630513065: SNAP RING for axial retention and requires the 0634306309: O-RING for hydraulic sealing against the housing bore. Always verify your transmission serial number against ZF’s application guide before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101108 | HOUSING | Encloses the brake pack and provides hydraulic passages |
| 0501329881 | HOUSING COVER | Seals the brake chamber and supports the piston |
| 0630513065 | SNAP RING | Retains the brake pack within the housing |
| 0634306309 | O-RING | Prevents hydraulic fluid leakage between components |
| 0637885612 | BREATHER | Equalizes internal pressure and vents moisture |
| 0769100082 | TYPE PLATE | Identification tag for transmission model and specs |
| 4699001152 | GK10LD | Gearbox assembly for torque distribution |
| 4699102172 | INPUT | Input shaft coupling to the engine |
| 4699103057 | OUTPUT | Output shaft to the driveline |
| 4699105091 | TURNTABLE BEARING | Supports rotational load in swing drives |
