Overview
The ZF 4644.199.005 LOOSE PARTS kit is a critical service assembly designed for the WG 200 series powershift transmissions. This OEM genuine part consolidates essential fasteners, seals, and positioning components that secure internal sub-assemblies within the transmission housing. Specifically, the 4644.199.005 kit provides the loose hardware required to mount the valve body and clutch pack retainers, ensuring precise alignment under high-torque conditions. As a genuine ZF component, SKU 4644.199.005 guarantees metallurgical consistency with the original transmission architecture, preventing stress risers that can occur with aftermarket substitutes.
Symptoms of Failure
When the 4644.199.005 LOOSE PARTS begin to degrade, operators typically notice three distinct failure modes. First, intermittent gear slippage under load occurs as fasteners lose preload, allowing clutch pack clearances to drift outside specification. Second, hydraulic fluid seepage from the transmission bell housing develops when sealing washers within the kit compress unevenly. Third, abnormal metallic rattling during neutral-to-drive engagement signals that positioning dowels have loosened, permitting axial play in the main shaft. Fourth, erratic shift timing emerges when loose parts allow the valve body to shift relative to its mounting surface, altering oil gallery alignment.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4644.199.005 |
| Material Composition | Case-hardened steel (fasteners) / Nitrile rubber (seals) |
| Weight (kit) | 0.85 kg (1.87 lbs) |
| Fastener Torque Range | 45–55 Nm (33–40 ft-lbs) |
| Operating Temperature Range | -40°C to +120°C (-40°F to +248°F) |
| OEM Reference | ZF 4644.199.005 |
| Thread Pitch | M8 x 1.25 (primary bolts) |
Compatibility
This LOOSE PARTS kit is engineered for the ZF WG200 transmission series, including the WG180, WG200, and WG210 variants. It directly interfaces with the 4644101216 TRANSMISSION HOUSING and the 4644301223 TRANSMISSION HOUSING, both of which provide the mounting geometry for this hardware. The kit also secures the 0730365067 TYPE PLATE to the housing exterior, while the 0631311009 GROOVED STUD serves as a primary alignment dowel within the same assembly. Compatibility extends to all WG200-series transmissions manufactured after 2012 with serial numbers beginning “4644”.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101216 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4644301223 | TRANSMISSION HOUSING | Alternate housing variant for WG200 |
| 0730365067 | TYPE PLATE | Identification tag with serial number |
| 0631311009 | GROOVED STUD | Alignment dowel for valve body |
| 4644303060 | COVER PLATE | Seals clutch pack access port |
| 4644303061 | COVER PLATE | Alternate cover plate thickness |
| 0634306525 | O-RING | Hydraulic seal for oil passages |
| 0636305026 | SCREW PLUG | Drain/fill port closure |
| 4644301279 | SCREEN SHEET | Filter mesh for oil sump |
| 4644301088 | SEALING CAP | Protects sensor ports during service |
