Overview
The ZF 5838.300.462 Axle Flared Tube is a precision-engineered hydraulic line designed to route pressurized oil within the final drive assembly of heavy-duty construction machinery. This OEM genuine part serves as the critical conduit between the axle housing and the differential carrier, ensuring consistent lubrication flow to planetary gearsets and bearing surfaces. Manufactured to ZF’s exacting tolerances, the flared tube end fittings create a leak-proof seal under extreme vibration and thermal cycling. The SKU 5838.300.462 is a direct replacement for the original factory component, eliminating the need for field modifications or adapter fittings.
Symptoms of Failure
- Hydraulic oil seepage at axle tube connection: A worn or cracked flared tube will cause slow oil weeping around the banjo fitting, often leaving a thin film on the axle housing. This is a common early indicator of tube fatigue in high-hour machines.
- Erratic gear engagement under load: When the tube loses internal pressure integrity, the DIFFERENTIAL may receive inconsistent lubrication, leading to momentary gear chatter or delayed engagement when shifting between forward and reverse.
- Contaminated oil in final drive: A fractured flared tube allows debris and moisture to enter the lubrication circuit, causing accelerated wear on the TAPER ROLLER BEARING and other rotating elements within the axle assembly.
- Visible tube deformation or corrosion: Physical inspection may reveal flattening, pitting, or stress cracks near the flare seat, particularly on machines operating in wet or abrasive environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 5838.300.462 |
| Material | Seamless cold-drawn steel, zinc-nickel plated |
| Tube Outer Diameter | 12 mm (0.472 in) |
| Flare Angle | 45° SAE standard |
| Overall Length | 385 mm (15.16 in) |
| Wall Thickness | 1.5 mm (0.059 in) |
| Weight | 0.34 kg (0.75 lbs) |
| OEM Reference | ZF 5838.300.462 |
| Burst Pressure Rating | 250 bar (3,625 psi) |
Compatibility
This flared tube is engineered for ZF’s WG180, WG200, and WG310 series power shift transmissions commonly installed in wheel loaders, graders, and material handlers. It directly interfaces with the REAR AXLE housing and the DIFFERENTIAL HOUSING on models produced after 2008. For earlier WG180 variants, verify the tube routing geometry against your existing part. The 5838.300.462 is not compatible with WG120 or WG150 series transmissions without adapter kits.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838022003 | REAR AXLE | Houses planetary gears and final drive reduction |
| 5838109001 | DIFFERENTIAL | Distributes torque between left and right wheels |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation under load |
| 5838300128 | DIFFERENTIAL HOUSING | Encloses differential gears and bearings |
| 0631329086 | SPRING PIN | Secures tube alignment within housing bore |
| 5838300129 | THRUST WASHER | Controls axial clearance in differential assembly |
| 5838300130 | THRUST WASHER | Secondary axial spacer for gear stack |
| 5838300131 | AXLE BEVEL GEAR | Transfers power from driveshaft to differential |
| 5838300132 | COMPENS. STUB AXLE | Left side axle shaft compensation joint |
| 5838300133 | COMPENS. STUB AXLE | Right side axle shaft compensation joint |
