Overview
This genuine ZF 5838.300.563 LUBRICATION TUBE is a critical fluid delivery component engineered for heavy-duty construction machinery transmissions. Positioned within the upper valve body assembly, it directs pressurized oil to the planetary gear sets and clutch packs, ensuring consistent thermal regulation and friction surface lubrication. The SKU 5838.300.563 is precision-formed to maintain exact oil flow paths, preventing hot spots and premature wear in high-torque applications. When installed alongside the 5838109009: DIFFERENTIAL, this tube guarantees that the differential gears receive adequate cooling under sustained load.
Symptoms of Failure
- Oil seepage at tube junctions: Cracks or deformation in the 5838.300.563 tube cause visible oil drips around the transmission housing, often mistaken for a pan gasket leak.
- Erratic gear engagement under load: Restricted oil flow from a collapsed or blocked tube leads to delayed clutch pack pressurization, resulting in harsh shifts or temporary power loss.
- Elevated transmission operating temperature: A compromised lubrication tube reduces oil volume to the 0750117075: TAPER ROLLER BEARING, causing the bearing to overheat and accelerate wear.
- Metallic debris in oil filter: Insufficient lubrication from a failing tube allows metal-to-metal contact in the differential assembly, generating fine shavings that contaminate the hydraulic system.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 5838.300.563 |
| Material | Cold-drawn steel with zinc-nickel plating |
| Length | 285 mm (11.2 in) |
| Outer Diameter | 12.7 mm (0.5 in) |
| Wall Thickness | 1.5 mm (0.059 in) |
| Weight | 0.18 kg (0.4 lbs) |
| OEM Reference | ZF 5838.300.563 |
| Burst Pressure Rating | 35 bar (507 psi) |
Compatibility
This lubrication tube is designed for ZF WG180, WG200, and WG210 series powershift transmissions commonly found in wheel loaders, graders, and excavators. It directly interfaces with the 2093209023: DIFFERENTIAL housing port and must be paired with the 5838300626: DIFFERENTIAL HOUSING to maintain correct oil gallery alignment. Always verify your transmission model suffix (e.g., WG180-3) before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109009 | DIFFERENTIAL | Distributes torque to drive axles |
| 0750117075 | TAPER ROLLER BEARING | Supports differential pinion shaft rotation |
| 2093209023 | DIFFERENTIAL | Secondary differential for limited-slip applications |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Secures lubrication tube alignment |
| 5838300811 | THRUST WASHER | Controls axial play in differential |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 5838300633 | AXLE | Rotates with bevel gear to drive wheels |
| 5838300753 | THRUST WASHER | Reduces friction on axle shaft |
| 5838300818 | THRUST WASHER | Adjusts differential side clearance |
Frequently Asked Questions
Q: Can I install the 5838.300.563 tube without replacing the differential housing gasket?
A: It is strongly recommended to replace the 5838300626: DIFFERENTIAL HOUSING seal whenever the tube is removed, as reusing old gaskets often leads to external oil leaks.
Q: How do I confirm this tube fits my ZF WG200 transmission?
A: Check the transmission serial number plate. The 5838.300.563 is compatible with WG200-2 and WG200-3 variants. For WG200-4 models, verify the tube length matches your existing part.
Q: What torque should I apply to the tube retaining nut?
A: Tighten to 25 Nm (18.4 ft-lbs). Over-torquing can distort the tube and restrict oil flow to the 0750117075: TAPER ROLLER BEARING.
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