Overview
The ZF 0501.225.704 BRAKE CYLINDER is a critical hydraulic actuation component designed for heavy-duty construction machinery transmissions. This OEM genuine part converts hydraulic pressure into mechanical force to engage the brake pack within the transmission housing, ensuring precise stopping control and load holding capability. Positioned directly on the transmission valve body or axle housing, the cylinder operates under high-pressure conditions to modulate braking force. The SKU 0501.225.704 is engineered to exact ZF tolerances, providing a direct replacement that restores factory braking performance. When paired with the 2098109043 DIFFERENTIAL, it ensures synchronized power distribution and braking across the drivetrain.
Symptoms of Failure
- Hydraulic fluid leakage around the cylinder seal – Visible oil drips or wetness on the transmission housing indicate seal degradation, leading to pressure loss and reduced braking force.
- Spongy or delayed brake engagement – Air ingress or internal wear causes a soft pedal feel, making precise machine control difficult during loading or grading operations.
- Intermittent gear slipping under load – A failing brake cylinder cannot hold the clutch pack firmly, resulting in unintended transmission disengagement when the machine is under heavy strain.
- Erratic brake release or sticking – Corrosion or piston scoring prevents full retraction, causing constant drag, overheating, and premature wear of the 2098209011 BEVEL GEAR SET.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.225.704 |
| Type | Hydraulic Brake Cylinder |
| Bore Diameter | 50 mm |
| Stroke Length | 25 mm |
| Operating Pressure | 180 bar (max) |
| Material | High-strength cast iron body, nitrile rubber seals |
| Weight | 1.8 kg |
| OEM Reference | ZF 0501.225.704 |
| Thread Size | M12 x 1.5 (inlet port) |
Compatibility
This brake cylinder is engineered for ZF power shift transmissions commonly used in wheel loaders, graders, and telehandlers. It directly fits the following transmission models: WG180, WG200, WG210, and WG310. It also integrates with the 2098209016 DIFFERENTIAL assembly in these systems, ensuring consistent braking torque distribution. For axle-mounted applications, verify compatibility with the 2095309059 DIFF.HOUSING to confirm mounting bolt pattern alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098109043 | DIFFERENTIAL | Distributes torque between axles |
| 2098209011 | BEVEL GEAR SET | Transfers power at right angles |
| 2098209016 | DIFFERENTIAL | Balances wheel speed differences |
| 2095309059 | DIFF.HOUSING | Encloses differential gears |
| 0631329086 | SPRING PIN | Secures linkage pins |
| 0730300820 | THRUST WASHER | Reduces axial friction |
| 4482360002 | AXLE BEVEL GEAR | Drives wheel hubs |
| 2095309081 | DIFFERENTIAL AXLE | Transmits torque to wheels |
| 5838300811 | THRUST WASHER | Supports gear end loads |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Meshes with ring gear |
