Overview
The ZF 4657.199.045 LOOSE PARTS for WG210 is a critical internal assembly kit designed to maintain the precise hydraulic and mechanical tolerances within the WG 210 Series transmission. This OEM genuine part, identified by SKU 4657.199.045, functions as a collection of fasteners, seals, and positioning elements that secure the 4657101030: TRANSMISSION HOUSING to the 4657201028: HOUS.FRONT SECT. Without this specific loose parts set, the structural integrity of the gear train and clutch pack alignment is compromised, leading to premature wear on the 4657201021: HOUSING REAR PART.
Symptoms of Failure
When the 4657.199.045 LOOSE PARTS assembly begins to degrade, operators often notice specific operational failures. Look for these warning signs to avoid costly downtime:
- Intermittent gear slippage under load: Worn or missing components from this kit cause the 0631306792: CYLINDRICAL PIN to shift, resulting in inconsistent clutch engagement.
- External oil seepage at housing joints: Degraded seals within the loose parts set allow ATF to escape between the front and rear housing sections.
- Abnormal vibration during shifting: Loose fasteners from this kit create micro-movements in the housing assembly, generating a distinct low-frequency hum.
- Delayed engagement from Neutral to Drive: Hydraulic pressure loss due to improper seating of the screen sheets leads to sluggish response times.
Technical Specifications
| Specification | Value |
|---|---|
| OEM Part Number | 4657.199.045 |
| Material Composition | Steel alloy with zinc plating (fasteners); Nitrile rubber (seals) |
| Weight (approx.) | 0.85 kg (1.87 lbs) |
| Thread Pitch (primary bolts) | M10 x 1.5 |
| OEM Reference | ZF Friedrichshafen AG |
| Torque Specification | 45 Nm (33 ft-lbs) |
Compatibility
This LOOSE PARTS kit is engineered specifically for the ZF WG 210 Series, but its components are shared across several heavy-duty transmission models. The kit is fully compatible with the WG180, WG200, and WG210 variants. It also integrates with the 4WG-200 and 5WG-210 off-highway transmissions. For proper installation, ensure the 0636100801: CAP SCREW and 4656301148: FIXING PLATE are ordered separately if your rebuild requires replacement of the entire fastening set.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101030 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4657201028 | HOUS.FRONT SECT | Front section housing for pump and converter |
| 4657201021 | HOUSING REAR PART | Rear section supporting output shaft |
| 0631306792 | CYLINDRICAL PIN | Alignment dowel for housing mating |
| 0636100801 | CAP SCREW | M10 bolt for housing fastening |
| 4656301148 | FIXING PLATE | Locking plate for bolt retention |
| 4657301034 | SCREEN SHEET | Fine mesh filter for oil circuit |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter |
| 0636100803 | CAP SCREW | M12 bolt for rear housing |
| 0631311009 | GROOVED STUD | Threaded stud for valve body mounting |
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