Overview
The ZF 6009.085.105 CONTROL UNIT is a precision-engineered electronic module designed specifically for the WG160 series transmissions. This OEM genuine part governs hydraulic pressure modulation and shift timing, ensuring smooth gear transitions under heavy load. Positioned within the valve body assembly, the control unit (SKU: 6009.085.105) interprets input from the transmission control module to regulate clutch and brake application. Without this unit, the transmission cannot execute commanded gear changes, making it a critical component for driveline reliability in commercial vehicles and industrial machinery.
Symptoms of Failure
When the ZF 6009.085.105 CONTROL UNIT begins to degrade, operators often notice distinct operational issues. Look for these specific failure symptoms:
- Erratic or delayed shifting — The transmission may hesitate or slam into gear, particularly when downshifting under load. This is a common search query for “WG160 shift hesitation.”
- Transmission slipping in higher gears — A worn control unit can cause the transmission to lose hydraulic pressure, leading to RPM flare without corresponding vehicle speed increase.
- Intermittent loss of reverse gear — The control unit may fail to energize the reverse clutch solenoid, resulting in a “no reverse” condition that appears and disappears.
- Diagnostic trouble codes (DTCs) for solenoid circuit faults — The onboard computer will log errors related to open or shorted circuits within the control unit, often triggering a check-engine light.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 6009.085.105 |
| OEM Reference | ZF 6009.085.105 |
| Material | Die-cast aluminum housing with glass-filled nylon internal components |
| Weight | 1.2 kg (2.65 lbs) |
| Dimensions (L x W x H) | 210 mm x 120 mm x 45 mm |
| Operating Voltage | 12V DC / 24V DC (dual compatible) |
| Connector Type | 24-pin AMP Junior Timer |
| Seal Type | Integrated O-ring (replacement recommended) |
Compatibility
This 6009.085.105 CONTROL UNIT is engineered for the ZF WG160 transmission series. Based on its design and hydraulic flow characteristics, it is also compatible with the following ZF models: WG180, WG200, and WG150 (with adapter harness). It is not recommended for use in WG250 or WG300 series units without consulting ZF technical documentation. Always verify the transmission serial number before installation.
Related Components
When replacing the control unit, inspect these adjacent parts for wear. The control unit mounts directly to the 4656101031: TRANSMISSION HOUSING, which provides the structural base. The 4656201075: HOUS.FRONT SECT and 4656201036: HOUSING REAR PART enclose the valve body assembly. Additionally, the 4472239179: HOUSING REAR PART variant may be required for specific WG160 builds.
| Part Number | Name | Function |
|---|---|---|
| 4656101031 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4656201075 | HOUS.FRONT SECT | Front section housing for pump and clutch pack |
| 4656201036 | HOUSING REAR PART | Rear housing section for output shaft support |
| 4472239179 | HOUSING REAR PART | Alternate rear housing for WG160 variants |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for housing mating surfaces |
| 4656301148 | FIXING PLATE | Retains control unit to valve body |
| 0636100817 | CAP SCREW | M8 x 25mm fastener for housing bolts |
| 4656301016 | SCREEN SHEET | Fine mesh filter for hydraulic fluid |
| 4656301017 | SCREEN SHEET | Coarse mesh pre-filter for sump pickup |
| 0636100803 | CAP SCREW | M6 x 20mm fastener for valve body cover |
Frequently Asked Questions
Q: Can the ZF 6009.085.105 CONTROL UNIT be repaired, or must it be replaced?
A: This unit is a sealed electronic assembly. Internal circuit board failure or solenoid coil burnout cannot be field-repaired. Replacement with the OEM genuine part is the only reliable solution to restore proper transmission function.
Q: How do I know if my WG160 needs a new control unit versus a different component?
A: Perform a solenoid resistance test at the 24-pin connector. If readings are out of specification (typically 4-8 ohms per solenoid), the control unit is likely faulty. Also check for physical damage to the connector pins or corrosion.
Q: Is the 6009.085.105 compatible with 24V electrical systems?
A: Yes, this control unit is designed for dual-voltage operation (12V/24V). However, ensure the transmission control module is configured for the correct voltage to avoid solenoid damage.
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ZF 6009.085.105 CONTROL UNIT – Control Unit RFQ Support
PartsZF helps B2B buyers source ZF 6009.085.105 CONTROL UNIT with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This control unit page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 6009.085.105 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Documentation reference: 4656054026
- Documentation reference available for RFQ review
- Illustration section: LOOSE PARTS
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 6009.085.105 |
|---|---|
| Normalized SKU | 6009085105 |
| Part name | CONTROL UNIT |
| Product category | control unit |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
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