Overview
The ZF 4644.106.207 SHIFT SYSTEM is a precision-engineered mechanical assembly designed for the WG 200 series of heavy-duty powershift transmissions. This OEM genuine component governs the hydraulic and mechanical selection of forward, reverse, and neutral gears within the transmission valve body. It acts as the critical interface between the driver’s control lever and the internal clutch packs, ensuring positive engagement and disengagement of each gear range. The SKU 4644.106.207 is a direct replacement for the original factory-installed unit, guaranteeing exact fitment and shift quality. This shift system works in concert with the 4460115043 HOUSING to contain hydraulic pressure and with the 4469315012 AXLE DRIVE HOUSING to manage torque distribution.
Symptoms of Failure
When the ZF 4644.106.207 shift system begins to fail, operators will notice distinct operational issues. Common failure symptoms include:
- Delayed or harsh gear engagement – The transmission hesitates before engaging a gear, or slams into gear with excessive force, indicating worn shift detents or valve spools.
- Intermittent gear slippage under load – The transmission may momentarily lose drive power during acceleration, a sign that the shift system is not fully locking the clutch pack.
- Hydraulic fluid leakage around the shift cover – Oil seeping from the shift system housing gasket or actuator seals, often visible as drips on the transmission bell housing.
- Inability to shift into specific gears – The operator cannot select reverse or a particular forward gear, pointing to internal mechanical binding or a broken shift fork.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.106.207 |
| OEM Reference | ZF 4644.106.207 |
| Material | High-strength cast iron / hardened steel |
| Weight | Approx. 2.8 kg (6.2 lbs) |
| Overall Length | 210 mm |
| Mounting Bolt Pattern | 4-bolt, 90 mm spacing |
| Operating Pressure | 12–18 bar (hydraulic) |
| Seal Type | Nitrile rubber O-rings (included) |
| Related Bearing | 0750117406 TAPER ROLLER BEARING |
| Related Bearing | 0750117802 TAPERED ROLLER BEARING |
Compatibility
This shift system is engineered for the ZF WG 200 series of transmissions, which are commonly found in heavy-duty off-highway vehicles, loaders, and graders. Based on the part type and OEM designation, the 4644.106.207 is compatible with the following ZF models:
- ZF WG 180
- ZF WG 200
- ZF WG 210
- ZF WG 220
Always verify your transmission serial number before ordering. The shift system interfaces directly with the 4460115043 HOUSING and the 4469315012 AXLE DRIVE HOUSING to ensure proper alignment of the 0750117406 TAPER ROLLER BEARING and the 0750117802 TAPERED ROLLER BEARING.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460115043 | HOUSING | Encloses shift system and hydraulic passages |
| 4469315012 | AXLE DRIVE HOUSING | Supports output shaft and differential |
| 0750117406 | TAPER ROLLER BEARING | Supports axial and radial loads on shift shaft |
| 0750117802 | TAPERED ROLLER BEARING | Secondary load support for shift mechanism |
| 0734319337 | SHAFT SEAL | Prevents oil leakage from shift shaft bore |
| 0730161317 | WASHER | Spacing and load distribution for shift bolts |
| 0730161451 | WASHER | Thrust washer for shift fork pivot |
| 0730161452 | WASHER | Adjustable shim for shift system clearance |
| 0730161453 | WASHER | Locking washer for shift detent spring |
| 0730161340 | WASHER | Flat washer for shift housing mounting |
ZF 4644.106.207 SHIFT SYSTEM – Shift System RFQ Support
ZF 4644.106.207 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 4644.106.207 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 | 4644.106.207 |
|---|---|
| Normalized SKU | 4644106207 |
| 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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