Overview
The ZF 5838.300.369 BRAKE LINE is a critical hydraulic conduit within the final drive assembly of heavy-duty construction machinery. This OEM genuine part channels pressurized transmission fluid to the brake piston, ensuring precise actuation of the service brake system. Positioned between the axle housing and the brake caliper, this brake line (SKU: 5838.300.369) maintains the structural integrity of the hydraulic circuit under extreme operating pressures. When paired with a robust 5838109010: DIFFERENTIAL, the assembly delivers consistent stopping power even in demanding excavation and grading applications.
Symptoms of Failure
- Hydraulic fluid seepage at axle connection points – Visible oil drips near the brake line fittings indicate micro-cracks or seal degradation, often accompanied by a drop in reservoir levels.
- Spongy or unresponsive brake pedal feel – Air ingress through a compromised line reduces hydraulic pressure, causing delayed braking response during loader or dozer operation.
- Uneven brake pad wear on one wheel – A restricted or collapsed brake line starves one caliper of fluid, leading to asymmetrical friction material consumption and reduced stopping torque.
- Transmission overheating warnings – Internal line blockage forces the pump to work harder, generating excess heat that triggers dashboard alerts in ZF-equipped machinery.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 5838.300.369 |
| Material | Seamless cold-drawn steel tube with zinc-nickel plating |
| Overall Length | 385 mm (15.2 in) |
| Tube Outer Diameter | 10 mm (0.39 in) |
| Fitting Thread Size | M12 x 1.5 (both ends) |
| Weight | 0.18 kg (0.40 lb) |
| OEM Reference | ZF 5838.300.369 |
| Burst Pressure Rating | 250 bar (3,625 psi) |
Compatibility
This brake line is engineered for ZF WG series power shift transmissions commonly found in wheel loaders, graders, and telehandlers. It directly fits the following ZF models: WG180, WG200, WG210, and WG250. The part also integrates with the 5838300626: DIFFERENTIAL HOUSING to seal the hydraulic circuit. For complete axle rebuilds, ensure the 0750117075: TAPER ROLLER BEARING and 2093209023: DIFFERENTIAL are inspected concurrently to prevent premature line fatigue from misaligned components.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109010 | DIFFERENTIAL | Distributes torque between axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports axial and radial loads on pinion shaft |
| 2093209023 | DIFFERENTIAL | Alternate differential assembly for WG200 variants |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329088 | SPRING PIN | Secures brake line bracket to housing |
| 5838300811 | THRUST WASHER | Reduces axial play in differential side gears |
| 5838300721 | AXLE BEVEL GEAR | Transfers power from differential to axle shaft |
| 5838300633 | AXLE | Drives wheel hub through final reduction |
| 5838300753 | THRUST WASHER | Controls end float in pinion gear assembly |
| 5838300818 | THRUST WASHER | Prevents gear-to-housing contact under load |
