Overview
The ZF 4616.101.136 TRANSMISSION HOUSING is the structural core of the WG 65 series gearbox, serving as the rigid enclosure that supports all internal rotating assemblies, shafts, and hydraulic circuits. This OEM genuine part, identified by SKU 4616.101.136, precisely aligns the planetary gear sets and valve bodies within the transmission, ensuring correct gear engagement and fluid flow. Manufactured from high-strength cast alloy, it withstands extreme torsional loads and thermal cycling inherent in heavy-duty industrial applications.
Symptoms of Failure
- External oil seepage at housing seams: Cracks or porosity in the housing allow transmission fluid to escape, leading to low fluid levels and eventual overheating.
- Persistent gear slipping under load: A warped or fatigued housing misaligns shafts, causing intermittent power loss and harsh shifting during acceleration.
- Unusual metallic grinding noises: Housing distortion permits bearing race movement, generating audible contact between rotating components.
- Contaminated fluid from internal debris: Housing fractures can introduce casting fragments into the oil circuit, accelerating wear on clutches and valves.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4616.101.136 |
| Material | High-grade cast aluminum alloy (A356-T6 equivalent) |
| Dry Weight | Approximately 18.5 kg (40.8 lbs) |
| Overall Length | 520 mm |
| Overall Width | 380 mm |
| Overall Height | 290 mm |
| OEM Reference | ZF 4616.101.136 (Genuine) |
| Bolt Hole Pattern | M12 x 1.75, 8-point pattern |
Compatibility
This housing is engineered for the ZF WG 65 series transmission family. It is directly compatible with models including the WG65, WG80, WG120, WG150, WG180, and WG200, where the housing casting shares identical mounting interfaces and bell-housing bolt patterns. Always verify the specific transmission serial number against the OEM parts catalog before installation.
During reassembly, critical fasteners such as the 0636011038 HEXAGON SCREW and 0636011118 HEXAGON SCREW must be torqued to factory specifications to prevent housing distortion. The 0636016015 HEXAGON SCREW secures the valve body cover, while the 0631306085 CYLINDRICAL PIN ensures precise dowel alignment between housing halves.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0636011038 | HEXAGON SCREW | Secures housing to bell housing |
| 0636011118 | HEXAGON SCREW | Fastens oil pan to housing |
| 0636016015 | HEXAGON SCREW | Attaches valve body cover |
| 0631306085 | CYLINDRICAL PIN | Aligns housing halves |
| 0634313118 | O-RING | Seals oil passage between housing sections |
| 0636304019 | SCREW PLUG | Closes drain/fill ports in housing |
| 0634801152 | SEALING RING | Prevents leaks at plug interfaces |
| 0732611049 | FILTER INSERT | Traps debris inside housing cavity |
| 0634303718 | O-RING | Seals filter housing to main case |
| 0636015114 | HEXAGON SCREW | Mounts hydraulic control unit |
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