Overview
The ZF 5841.300.006 SPRING is a critical OEM genuine component engineered for the internal clutch and brake assemblies of the WG100, WG130, and WG131 transmission series. This precision-ground spring provides the necessary return force for hydraulic pistons, ensuring proper engagement and disengagement of gear sets. As a direct replacement part, the SKU 5841.300.006 sits within the valve body and clutch pack area, where it maintains consistent tension against the 2098117002: HOUSING to prevent premature wear. Without this spring, the transmission cannot maintain proper hydraulic pressure modulation during shifting cycles.
Symptoms of Failure
- Delayed gear engagement on cold starts – A worn 5841.300.006 spring loses its compressive force, causing a noticeable lag when shifting from Park to Drive or Reverse, especially in WG130 units.
- Intermittent clutch slip under load – When the spring fatigues, the clutch pack fails to fully disengage, leading to a burning smell and slipping during uphill towing or heavy hauling.
- Erratic shift timing – The spring’s reduced tension creates inconsistent hydraulic feedback, resulting in harsh or delayed upshifts between 2nd and 3rd gear in WG100 transmissions.
- Oil contamination from metal debris – A broken spring can fragment and circulate through the system, damaging the 2098301052: REAR AXLE HOUS. and requiring a full transmission flush.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 5841.300.006 |
| Material | Chrome Silicon Alloy Steel (SAE 9254) |
| Wire Diameter | 3.2 mm |
| Outer Diameter | 28.5 mm |
| Free Length | 45.0 mm |
| Spring Rate | 12.4 N/mm |
| Weight | 0.018 kg |
| OEM Reference | ZF 5841.300.006 |
| Finish | Zinc Phosphate Coated |
Compatibility
This OEM genuine spring is specifically designed for ZF WG-series transmissions, including the WG100, WG130, and WG131 models commonly found in medium-duty trucks and construction equipment. It also fits select WG180 and WG200 variants when used in the clutch return assembly. Always verify the spring’s free length against your existing part before installation. For proper mounting, pair this spring with the 0636103300: STUD and secure it using the 0637101164: HEXAGON NUT to achieve the correct preload tension.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2098117002 | HOUSING | Encloses clutch pack assembly |
| 2098301052 | REAR AXLE HOUS. | Supports output shaft bearings |
| 0636103300 | STUD | Locates spring and valve body |
| 0637101164 | HEXAGON NUT | Secures stud to housing |
| 0636102566 | STUD | Alternate length for WG131 |
| 0636100960 | STUD | Short stud for brake assembly |
| 0637101167 | HEXAGON NUT | Locking nut for high-vibration areas |
| 0634303044 | O-RING | Seals hydraulic passages |
| 2098317013 | BRAKE HOUSING | Holds parking brake components |
| 2098317028 | BRAKE HOUSING | Alternate brake housing for WG200 |
