Overview
The ZF 0750.106.076 CUP SPRING is a precision-engineered component designed for the hydraulic control systems within ZF WG200, WG92, and WG98 series transmissions. This genuine OEM part, identified by SKU 0750.106.076, functions as a critical load-bearing element that maintains consistent pressure on valve assemblies and clutch pistons. Located within the valve body or clutch pack assembly, the cup spring ensures proper preload and dampening, directly influencing shift quality and torque transmission stability. When paired with a properly sealed 4660198001: PERIPHERALS kit, this spring helps maintain hydraulic integrity across the entire transmission system.
Symptoms of Failure
- Erratic gear engagement or delayed shifting: A worn cup spring loses its ability to maintain consistent hydraulic pressure, causing hesitation or harsh engagement when the transmission shifts between gears.
- Intermittent clutch slippage under load: When the spring fatigues, it cannot properly preload the clutch piston, leading to momentary power loss during acceleration or uphill driving.
- Hydraulic fluid contamination from metal debris: A fractured cup spring can shed microscopic metal particles into the transmission fluid, which may clog filters and damage the 4660101011: TRANSMISSION HOUSING internal passages.
- Audible clicking or rattling from transmission pan: Broken spring fragments can produce metallic noises, particularly at idle or during low-speed operation, indicating immediate replacement is required.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 0750.106.076 |
| Material | High-carbon spring steel (DIN 17222) |
| Outer Diameter | 42.5 mm ±0.2 mm |
| Inner Diameter | 28.0 mm ±0.1 mm |
| Thickness | 2.5 mm |
| Free Height | 8.0 mm |
| Load Rating | 1,200 N at 4.5 mm deflection |
| Weight | 18 grams |
| OEM Reference | ZF 0750.106.076 |
Compatibility
This cup spring is specifically engineered for ZF WG200, WG92, and WG98 series transmissions used in heavy-duty commercial vehicles, construction equipment, and agricultural machinery. It is a direct replacement for the original factory-installed spring in the clutch piston assembly and valve body circuits. The part integrates with the 0501209818: RANGE SELECTOR mechanism to ensure precise gear selection, and works in conjunction with the 4660301018: HOUSING to maintain structural alignment. Compatible models include WG180, WG200, WG92, WG98, and select variants of the ZF Ecomat series where cup spring dimensions match OEM specifications.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 0631306174 | CYLINDRICAL PIN | Aligns valve body components during assembly |
| 0769123894 | TYPE PLATE | Identifies transmission model and serial number |
| 4660221012 | SUCTION TUBE | Transfers hydraulic fluid from sump to pump |
| 0634100317 | O-RING | Seals hydraulic connections against leaks |
| 0636103273 | CAP SCREW | Secures transmission housing covers |
| 0750100022 | SCREW PLUG | Closes hydraulic test ports and drain holes |
