Overview
The ZF 4651.199.024 LOOSE PARTS kit is a critical service package designed for the WG 100 series transmission. This assembly contains the necessary fasteners, seals, and positioning elements required to secure internal components within the gearbox housing. Specifically, the SKU 4651.199.024 functions as a retention and sealing set that interfaces directly with the TRANSMISSION HOUSING and the HOUSING assembly. Without this loose parts kit, the structural integrity of the WG100’s internal architecture is compromised, leading to misalignment of planetary gear sets and hydraulic circuits.
Symptoms of Failure
When the ZF 4651.199.024 LOOSE PARTS begins to degrade or is improperly installed during a rebuild, operators will notice distinct failure modes. Oil seepage at the housing mating surfaces is the most common indicator, often accompanied by a gradual loss of transmission fluid. Intermittent gear slippage under load occurs when the retaining hardware loosens, allowing clutch packs to shift out of tolerance. Another frequent symptom is abnormal metallic rattling from the bell housing during idle, which signals that loose components are vibrating against the HOUSING walls. Finally, erratic shift timing can develop if the kit’s sealing elements fail, allowing cross-contamination of hydraulic circuits.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4651.199.024 |
| OEM Reference | ZF WG100 Series |
| Material Composition | Steel, Nitrile Rubber, Aluminum |
| Weight (Estimated) | 0.85 kg (1.87 lbs) |
| Kit Contents | Fasteners, O-Rings, Positioning Pins |
| Operating Temperature Range | -40°C to +120°C |
| Torque Specification | 25 Nm (18.4 lb-ft) |
Compatibility
This genuine ZF 4651.199.024 LOOSE PARTS is engineered primarily for the WG 100 transmission series. However, due to shared architecture, it is also compatible with the WG 180 and WG 200 models when used in conjunction with the correct O-RING (0634303928). The kit is not recommended for WG 250 or WG 300 variants without verifying housing bolt patterns. Always cross-reference the existing TRANSMISSION HOUSING part number to ensure proper fitment before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4651101007 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4651301029 | HOUSING | Intermediate support housing for shafts |
| 0634303928 | O-RING | Hydraulic seal between mating surfaces |
| 4651301024 | HOUSING | Rear housing for output shaft support |
| 4651203002 | SCREEN SHEET | Filter mesh for hydraulic fluid |
| 4651303005 | SCREEN SHEET | Secondary filter element for oil sump |
| 0636101032 | CAP SCREW | Fastener for housing attachment |
| 0630361028 | SEALING CAP | Closure for test ports |
| 4475280060 | SCREW PLUG | Threaded plug for drain holes |
| 0634303312 | O-RING | Seal for screw plug interface |
