ZF 5838.300.062 COMPRESSION SPRING for WG100/WG130/WG131 | OEM Genuine Part

Overview

The ZF 5838.300.062 COMPRESSION SPRING is a precision-engineered OEM genuine component designed for the shift mechanism and clutch pack preload systems within ZF WG-series transmissions. This spring provides critical axial force to maintain consistent pressure on selector rails and synchronizer assemblies, ensuring smooth gear engagement and preventing unwanted movement of internal components. As an original equipment part, SKU 5838.300.062 meets ZF’s exacting tolerances for fatigue life and load deflection, making it essential for reliable transmission operation in heavy-duty commercial vehicles and industrial machinery.

Symptoms of Failure

• Erratic gear engagement or delayed shifting — A worn compression spring loses its ability to maintain consistent force, causing the transmission to hesitate or clash when selecting gears, especially under load.
• Transmission rattling or buzzing noise in neutral — When the spring fatigues, internal selector components can vibrate against each other, producing a metallic rattle that worsens with engine RPM.
• Intermittent gear slip under acceleration — Insufficient spring pressure allows shift forks to partially disengage, leading to momentary power loss and a “slipping” sensation during hard pulls.
• Hard shifting or increased lever effort — A collapsed or set spring creates excessive resistance in the shift linkage, requiring more force to move through gear positions.

Technical Specifications

Compatibility

This compression spring is engineered for the ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It is also compatible with select variants of the WG180 and WG200 series used in municipal trucks, refuse vehicles, and construction equipment. The spring seats within the shift rail assembly and works in conjunction with the 5838109012: DIFFERENTIAL and 0750117075: TAPER ROLLER BEARING to ensure precise gear positioning. For complete overhaul, pair this spring with the 2093209023: DIFFERENTIAL and 5838300626: DIFFERENTIAL HOUSING to restore full assembly integrity.

Related Components

Frequently Asked Questions

Q: How do I know if the 5838.300.062 spring is the correct replacement for my transmission?
A: Verify your transmission model plate—this spring is standard in WG100, WG130, and WG131 units. If you have a WG180 or WG200, check the shift rail diameter; the spring fits 28mm bores. Measure your old spring’s free length; if it is below 58mm, replacement is necessary.

Q: Can I reuse the old spring if it looks intact?
A: No. Compression springs lose up to 15% of their load capacity after 100,000 cycles even without visible damage. Always install a new OEM spring during any shift mechanism overhaul to prevent premature failure.

Q: What other parts should I replace at the same time?
A: For optimal reliability, replace the 0631329088: SPRING PIN and 5838300811: THRUST WASHER alongside this spring, as they share the same wear cycle and can cause misalignment if left in service.