Overview
The ZF 4699.199.023 LOOSE PARTS assembly is a critical OEM genuine component designed for the internal clutch and planetary gear sets within heavy-duty ZF construction machinery transmissions. This part number, 4699.199.023, typically comprises a collection of small but essential hardware—including retaining rings, thrust washers, and locating pins—that secure the rotating elements inside the transmission housing. Without this specific loose parts kit, the precise alignment of the 4699100080: BASIC GEARBOX cannot be maintained, leading to accelerated wear on adjacent components. The SKU 4699.199.023 is engineered to meet ZF’s original tolerances, ensuring that every shim and fastener fits exactly as intended during a rebuild or overhaul.
Symptoms of Failure
- Intermittent gear slipping under load: When the loose parts wear or loosen, the clutch packs lose clamping force, causing the transmission to slip during heavy excavation or grading.
- Metallic rattling from the bell housing: Worn retaining rings or pins allow planetary gears to shift axially, producing a distinct rattle that worsens with RPM changes.
- Oil contamination with fine metal particles: Degraded loose parts shed debris into the lubricant, which can clog the 0634309122: SHAFT SEAL and lead to external leaks.
- Hard shifting or delayed engagement: Misaligned shims and rings prevent the hydraulic pistons from fully engaging the clutches, resulting in jerky or delayed gear changes.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4699.199.023 |
| Material Composition | Case-hardened steel / Nitrile rubber (seals) |
| Weight (approx.) | 0.45 kg (1.0 lb) |
| Outer Diameter (max) | 85 mm |
| Inner Diameter (min) | 42 mm |
| Thickness Range | 1.5 mm – 4.0 mm |
| OEM Reference | ZF 4699.199.023 |
| Operating Temperature | -40°C to +120°C |
Compatibility
This loose parts kit is primarily used in ZF’s WG180, WG200, and WG210 series transmissions, which are common in wheel loaders, graders, and dump trucks. It also fits select models of the ZF 4WG-200 and 6WG-250 torque converter transmissions. For proper installation, always pair the 4699.199.023 with a new 0634801038: SEALING RING to prevent fluid bypass, and verify end-play using a 0630000091: SHIM RING to achieve the correct preload. Compatibility with older WG180 variants may require additional shimming.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699100080 | BASIC GEARBOX | Main transmission housing and gear set |
| 0634309122 | SHAFT SEAL | Prevents oil leakage at output shaft |
| 0634801038 | SEALING RING | Static seal for clutch piston bore |
| 0630000091 | SHIM RING | Adjusts axial play in planetary set |
| 0630000255 | SHIM RING | Fine-tunes bearing preload (0.5mm) |
| 0630000058 | SHIM RING | 0.3mm spacer for clutch pack |
| 0630000059 | SHIM RING | 0.4mm spacer for sun gear |
| 0630000061 | SHIM RING | 0.6mm spacer for ring gear |
| 0501341241 | WHEEL STUD | Secures final drive hub |
| 0750117782 | TAPERED ROLLER BEARING | Supports planetary carrier rotation |
