Overview
The ZF 5838.300.217 SCREW PLUG is a precision-engineered sealing component designed for the differential and final drive assemblies of ZF WG-series transmissions. This OEM genuine part, identified by SKU 5838.300.217, serves as a critical fluid retention device, preventing lubricant loss and contaminant ingress at threaded access points. Positioned within the housing of the transmission, this screw plug ensures that the 5838300626: DIFFERENTIAL HOUSING maintains proper oil pressure and cleanliness. Manufactured to exacting ZF tolerances, the 5838.300.217 is essential for maintaining the integrity of the lubrication system in heavy-duty industrial applications.
Symptoms of Failure
When the ZF 5838.300.217 screw plug wears out or becomes damaged, operators will notice distinct performance issues. Oil seepage around the differential housing is the most common indicator, often appearing as a slow drip beneath the transmission. Contaminated transmission fluid occurs when the compromised plug allows dirt and moisture to enter the system, leading to accelerated wear on internal components. Unusual whining or grinding noises from the differential area may develop as lubricant levels drop, affecting the 5838109012: DIFFERENTIAL and associated bearings. Finally, intermittent gear engagement issues can arise when low oil pressure triggers safety protocols in the transmission control system.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 5838.300.217 |
| Type | Hexagon Socket Screw Plug |
| Thread Size | M18 x 1.5 (estimated) |
| Overall Length | 22 mm |
| Head Diameter | 24 mm |
| Material | Steel, Zinc-Plated |
| Weight | 0.04 kg |
| OEM Reference | ZF 5838.300.217 |
| Sealing Method | Copper Washer (integrated) |
Compatibility
This screw plug is engineered for the ZF WG100, WG130, and WG131 transmission series. It is also compatible with the WG180 and WG200 models where the differential housing design shares the same threaded port configuration. The 5838.300.217 is a direct replacement for the original factory-installed plug and works in conjunction with the 0750117075: TAPER ROLLER BEARING and the 2093209023: DIFFERENTIAL assembly. Always verify thread pitch and housing depth before installation to ensure a proper seal.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports rotating differential components |
| 2093209023 | DIFFERENTIAL | Secondary differential assembly |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses and protects differential gears |
| 0631329088 | SPRING PIN | Secures alignment of housing components |
| 5838300811 | THRUST WASHER | Reduces axial friction in gear sets |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 5838300633 | AXLE | Transmits rotational force to wheels |
| 5838300753 | THRUST WASHER | Controls axial play in differential |
| 5838300818 | THRUST WASHER | Provides wear surface for rotating parts |
Frequently Asked Questions
Q: Can I reuse the 5838.300.217 screw plug after removing it?
A: ZF recommends replacing this screw plug with a new OEM unit each time it is removed. The sealing surface can deform after initial torque application, and reusing it may lead to oil leaks around the differential housing.
Q: What torque specification should I use for installation?
A: For the 5838.300.217 screw plug, the standard tightening torque is 35 Nm (26 ft-lbs) when installed with a new copper sealing washer. Over-tightening can crack the housing threads or distort the plug.
Q: Does this part fit the ZF WG180 transmission?
A: Yes, the 5838.300.217 is compatible with the WG180 model, provided the differential housing uses the M18 x 1.5 threaded port. Always cross-reference your housing part number with the 5838300626: DIFFERENTIAL HOUSING to confirm fitment.
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Phone: +86 158 2286 3467 |
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