Overview
The ZF 0732.041.615 COMPRESSION SPRING is a critical OEM genuine component engineered specifically for the WG 200 Series transmission. This precision spring resides within the valve body assembly, where it exerts calibrated force on a spool or piston to regulate hydraulic pressure and ensure smooth clutch engagement. The SKU 0732.041.615 is manufactured to ZF’s exacting tolerances, making it essential for maintaining proper shift timing and preventing internal leakage. When installed alongside a properly sealed TRANSMISSION HOUSING, this spring contributes directly to the transmission’s long-term durability and consistent performance under heavy-duty cycles.
Symptoms of Failure
When the ZF 0732.041.615 compression spring fatigues or loses its temper, operators may notice several distinct failure modes. Delayed or harsh shifting occurs as the spring fails to maintain adequate force on the control valve, leading to erratic pressure buildup. Intermittent gear slippage under load is another common symptom, particularly in higher torque ranges, as the spring cannot hold the valve in its proper position. Hydraulic fluid aeration or foaming can develop if the spring’s reduced tension allows cavitation within the valve body. Finally, unexpected transmission overheating may arise from constant valve hunting, which generates excess friction and heat. These symptoms often worsen over time, making early replacement of the 0732.041.615 spring a cost-effective repair.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 0732.041.615 |
| Type | Compression Spring, Helical |
| Wire Diameter | 2.5 mm (approx.) |
| Outer Diameter | 18.0 mm |
| Free Length | 45.0 mm |
| Material | Oil-Tempered Chrome Silicon Steel (EN 10270-2) |
| Surface Treatment | Phosphate & Oil Coating |
| Weight | 0.012 kg |
| OEM Reference | ZF 0732.041.615 |
| Application | Valve Body Return Spring |
Compatibility
This OEM genuine compression spring is primarily designed for the ZF WG 200 Series transmissions, including the WG180, WG200, and WG210 models. It is also compatible with certain variants of the ZF Ecomat 4HP and 5HP series that share the same valve body architecture. The 0732.041.615 spring is frequently used in buses, fire trucks, and heavy construction equipment where precise hydraulic control is mandatory. For complete assembly integrity, always pair this spring with a new HOUSING and verify the TYPE PLATE for exact model identification. Additionally, the GROOVED STUD should be inspected for wear during installation to prevent misalignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4644101165 | TRANSMISSION HOUSING | Encloses and supports gear train and valve body |
| 4644301304 | HOUSING | Secondary housing for clutch pack assembly |
| 0730365067 | TYPE PLATE | Identification plate with transmission serial number |
| 0631311009 | GROOVED STUD | Alignment stud for valve body positioning |
| 4644106300 | SHIFT SYSTEM | Complete shift control module |
| 4644306500 | COVER PLATE | Seals valve body cavity |
| 4644159300 | SHIFT SYSTEM | Alternate shift system variant |
| 4644306560 | VALVE BLOCK | Hydraulic control manifold |
| 4644306408 | WASHER | Hardened flat washer for spring seat |
| 4644107015 | SPEEDOMETER | Output speed sensor drive |
