Overview
The ZF 4657.183.111 LOOSE PARTS set is a critical service kit designed specifically for the WG 210 series transmission. This genuine OEM assembly contains the internal fasteners, locating pins, and retention hardware required to secure the main housing sections and oil distribution components during a rebuild or major repair. The SKU 4657.183.111 serves as the master loose parts package, ensuring that every bolt, pin, and plate meets ZF’s exacting tolerances for load distribution and vibration resistance. Without this kit, the structural integrity of the transmission housing assembly is compromised, leading to misalignment of the gear train and potential oil circuit failures.
Symptoms of Failure
- Transmission oil seepage at housing joints: When the loose parts (bolts and pins) lose torque or fatigue, the seal between the TRANSMISSION HOUSING and the HOUS.FRONT SECT begins to weep ATF fluid.
- Audible clunking or gear rattle under load: Worn or missing CYLINDRICAL PIN components allow the HOUSING REAR PART to shift, creating backlash in the planetary set.
- Intermittent loss of drive pressure: Loose fasteners cause the oil feed passages to misalign, starving the clutches of hydraulic pressure.
- Vibration at specific RPM ranges: Degraded fixing plates allow harmonic resonance between the housing sections, felt through the chassis.
Technical Specifications
| Parameter | Specification |
|---|---|
| OEM Part Number | 4657.183.111 |
| Material Composition | Steel (fasteners), hardened alloy (pins) |
| Weight (kit) | 0.85 kg (1.87 lbs) |
| Thread Pitch (primary bolts) | M10 x 1.5 |
| Hardness Rating | HRC 32-38 (pins) |
| OEM Reference | ZF 4657.183.111 |
| Compatible Fasteners | CAP SCREW (0636100801) |
| Retention Plate | FIXING PLATE (4656301148) |
Compatibility
This loose parts kit is engineered for the ZF WG 210 series, but its fasteners and pins are shared across the WG family of powershift transmissions. It is directly compatible with WG180, WG200, and WG210 models. The kit also integrates with the oil filtration system, requiring the SCREEN SHEET (4657301032) and SCREEN SHEET (4657301033) for proper debris management. For high-torque applications, upgrade to the CAP SCREW (0636100803) for increased clamp load. The OIL FEED.HOUSG. (4681301040) must be aligned using the pins from this kit to prevent oil starvation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101033 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201027 | HOUS.FRONT SECT | Front section housing for input shaft |
| 4657201012 | HOUSING REAR PART | Rear section housing for output flange |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing sections |
| 0636100801 | CAP SCREW | Primary bolt for housing fastening |
| 4656301148 | FIXING PLATE | Retention plate for oil feed lines |
| 4657301032 | SCREEN SHEET | Fine mesh filter for hydraulic circuit |
| 4657301033 | SCREEN SHEET | Coarse mesh pre-filter for sump |
| 0636100803 | CAP SCREW | High-strength bolt for heavy-duty use |
| 4681301040 | OIL FEED.HOUSG. | Oil distribution manifold to clutches |
