Overview
The ZF 6057.018.261 CONTROL UNIT is a precision electro-hydraulic valve body designed specifically for the WG210 series powershift transmission. This OEM genuine part governs clutch engagement, shift timing, and line pressure modulation by directing hydraulic fluid to the appropriate clutch packs. Positioned on the upper valve body deck within the main transmission casing, the control unit interfaces directly with the TRANSMISSION HOUSING to ensure seamless gear changes under heavy load. The SKU 6057.018.261 replaces earlier revision units and is factory-calibrated for direct bolt-on installation.
Symptoms of Failure
- Erratic shift timing or harsh engagement: A failing control unit causes delayed or abrupt clutch application, often described as “shift flare” or “clunking” during gear changes.
- Transmission slipping under load: Worn internal spools or degraded solenoids allow pressure bleed-off, resulting in power loss when climbing grades or carrying rated payloads.
- Intermittent neutral condition: The transmission may suddenly drop into neutral without driver input, particularly after prolonged operation at high temperatures.
- Hydraulic fluid contamination in the electrical connector: Internal seal failure allows ATF to migrate into the wiring harness, causing short circuits and diagnostic trouble codes.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 6057.018.261 |
| OEM Reference | ZF 6057 018 261 |
| Material | Die-cast aluminum alloy with anodized finish |
| Weight | 2.85 kg (6.28 lbs) |
| Dimensions (L×W×H) | 310 mm × 180 mm × 95 mm |
| Operating Pressure | 12–18 bar (174–261 psi) |
| Seal Type | Nitrile rubber O-rings (included) |
Compatibility
This control unit is engineered for the ZF WG210 series, but cross-referencing indicates functional interchangeability with the WG180 and WG200 families when used with the correct HOUS.FRONT SECT and HOUSING REAR PART. It also fits select WG150 variants equipped with the same valve body footprint. Always verify the HOUSING REAR SECTION casting number to confirm compatibility before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4657101080 | TRANSMISSION HOUSING | Main structural casing enclosing gear sets and valve body |
| 4657201167 | HOUS.FRONT SECT | Front section housing torque converter and pump |
| 4657201171 | HOUSING REAR PART | Rear casing supporting output shaft and PTO mount |
| 4657298103 | HOUSING REAR SECTION | Intermediate rear housing for extended wheelbase models |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for valve body-to-housing positioning |
| 0636100801 | CAP SCREW | M8×25 hex flange bolt for control unit mounting |
| 4656301148 | FIXING PLATE | Retainer bracket securing solenoid harness to housing |
| 4657301034 | SCREEN SHEET | Fine mesh filter for valve body inlet port |
| 4657301035 | SCREEN SHEET | Coarse mesh pre-filter for sump return line |
| 0636100803 | CAP SCREW | M10×30 hex flange bolt for housing section joining |
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