Overview
The ZF 4644.106.084 SHIFT SYSTEM is a precision-engineered OEM genuine component designed for the WG 200 series of heavy-duty transmissions. This assembly governs the precise engagement and disengagement of gear sets, translating driver commands into reliable mechanical action within the transmission housing. Positioned directly on the main control valve body, the shift system acts as the critical interface between the hydraulic control unit and the planetary gear sets. The SKU 4644.106.084 is manufactured to ZF’s original tolerances, ensuring exact fit and consistent shift quality in demanding industrial applications.
Symptoms of Failure
When the 4644.106.084 shift system begins to wear, operators often notice specific performance degradation. Common failure symptoms include:
- Delayed or harsh gear engagement – The transmission hesitates before engaging a gear or slams into gear, indicating worn shift forks or detent components.
- Intermittent gear slipping – The transmission unexpectedly drops out of gear under load, a classic sign of a failing shift rail or worn actuator.
- Oil leaks around the shift housing – Fluid seepage at the interface between the shift system and the main housing often points to degraded seals or a cracked shift cover.
- Difficulty shifting into specific gears – A stuck or binding shift mechanism prevents smooth selection of forward or reverse gears.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 4644.106.084 |
| OEM Reference | ZF 4644.106.084 |
| Material | High-strength steel alloy with hardened shift forks |
| Weight | Approx. 2.8 kg (6.2 lbs) |
| Dimensions (L x W x H) | 320 mm x 180 mm x 110 mm |
| Compatible Housing | 4460115043: HOUSING |
| Associated Bearings | 0750117406: TAPER ROLLER BEARING, 0750117802: TAPERED ROLLER BEARING |
| Seal Kit Reference | 0734319337: SHAFT SEAL |
Compatibility
This shift system is specifically engineered for the WG 200 Series transmissions, including models such as the WG180, WG200, and WG220. It is also compatible with certain variants of the ZF Ecomat 4HP and 5HP series that share the same shift rail architecture. Always verify the transmission serial number against the 4644.106.084 part number to ensure correct fitment. The shift system integrates directly with the 4469315012: AXLE DRIVE HOUSING and relies on precise bearing alignment from the 0750117406: TAPER ROLLER BEARING and 0750117802: TAPERED ROLLER BEARING for smooth operation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460115043 | HOUSING | Encloses the shift system and provides mounting points |
| 4469315012 | AXLE DRIVE HOUSING | Houses the output shaft and differential assembly |
| 0750117406 | TAPER ROLLER BEARING | Supports axial and radial loads on the shift shaft |
| 0750117802 | TAPERED ROLLER BEARING | Provides rotational support for the shift drum |
| 0734319337 | SHAFT SEAL | Prevents oil leakage at the shift shaft exit point |
| 0730161317 | WASHER | Spacing and load distribution for shift rail fasteners |
| 0730161451 | WASHER | Thrust washer for shift fork pivot points |
| 0730161452 | WASHER | Lock washer for shift system mounting bolts |
| 0730161453 | WASHER | Flat washer for shift rail end caps |
| 0730161340 | WASHER | Spacer washer for shift detent assembly |
ZF 4644.106.084 SHIFT SYSTEM – Shift System RFQ Support
ZF 4644.106.084 SHIFT SYSTEM can be reviewed as a shift-system sourcing item for WG, BP, HL, or ERGOPOWER-related service work when the application evidence is available.
Part-Number Summary
Use ZF number 4644.106.084 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: SHIFT SYSTEM
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 | 4644.106.084 |
|---|---|
| Normalized SKU | 4644106084 |
| Part name | SHIFT SYSTEM |
| Product category | shift system |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
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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