Overview
The ZF 0736.020.082 LOCKING SCREW is a critical fastening component engineered specifically for the WG200 series powershift transmission. This OEM genuine part secures the internal hydraulic control assembly within the main valve body, preventing unintended movement of the shift spools under high-pressure operation. The SKU 0736.020.082 is precision-machined to maintain exact clamping force, ensuring the 4460115043: HOUSING remains rigidly aligned during torque transfer. Without this locking screw, the entire gear selection mechanism loses positional integrity, leading to erratic shifting behavior.
Symptoms of Failure
- Hydraulic oil seepage at the valve body joint: A worn or stripped 0736.020.082 locking screw cannot maintain proper seal compression, causing ATF to weep past the gasket surface. This is a common long-tail search query for “ZF WG200 transmission leak at valve body.”
- Intermittent gear engagement delay: When the locking screw loosens, the shift rail alignment shifts by fractions of a millimeter, resulting in a noticeable lag when selecting forward or reverse gears.
- Metallic rattling from the transmission sump: A fractured locking screw can break free and circulate within the gear train, producing a distinct tapping noise. This symptom often triggers searches for “ZF transmission loose bolt noise.”
- Erratic clutch pack pressure: Loss of screw tension allows the 4469315012: AXLE DRIVE HOUSING to shift slightly, altering oil flow paths and causing clutch slip under load.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (SKU) | 0736.020.082 |
| Thread Size | M10 x 1.5 (estimated) |
| Overall Length | 28 mm |
| Head Type | Hexagon socket (Allen) |
| Material | Case-hardened alloy steel (10.9 grade) |
| Surface Finish | Zinc-nickel plated (corrosion resistant) |
| Weight | 0.018 kg |
| OEM Reference | ZF 0736.020.082 |
| Torque Specification | 45 Nm + 90° angle |
Compatibility
This locking screw is a direct OEM replacement for the ZF WG200 series transmission family. It is also compatible with the WG180, WG210, and WG220 models that share the same valve body architecture. The 0736.020.082 interfaces directly with the 0750117406: TAPER ROLLER BEARING retention system and the 0750117802: TAPERED ROLLER BEARING preload adjustment mechanism. Always verify thread pitch compatibility when replacing this screw in earlier WG100 series units.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4460115043 | HOUSING | Encloses the planetary gearset and valve body |
| 4469315012 | AXLE DRIVE HOUSING | Transfers torque from differential to output shafts |
| 0750117406 | TAPER ROLLER BEARING | Supports radial and axial loads on main shaft |
| 0750117802 | TAPERED ROLLER BEARING | Provides preload adjustment for output shaft |
| 0734319337 | SHAFT SEAL | Prevents oil leakage at rotating shaft interface |
| 0730161317 | WASHER | Distributes clamping load under bolt head |
| 0730161451 | WASHER | Spacer for valve body alignment |
| 0730161452 | WASHER | Thrust washer for planetary carrier |
| 0730161453 | WASHER | Adjustment shim for bearing preload |
| 0730161340 | WASHER | Sealing washer for hydraulic passages |
