Overview
The ZF 2093.303.074 HELICAL GEAR is a precision-machined component engineered for the auxiliary drive and countershaft assemblies within ZF WG100, WG130, and WG131 transmissions. This OEM genuine part transmits torque quietly and efficiently, reducing vibration and ensuring smooth power flow through the gear train. The helical tooth design provides greater surface contact compared to spur gears, resulting in higher load capacity and reduced noise during operation. The SKU 2093.303.074 is a direct replacement for worn gears, restoring factory performance and extending transmission service life.
Symptoms of Failure
- Whining or howling noise during acceleration: Worn helical gear teeth create a distinct high-pitched whine that intensifies under load, often indicating pitting or uneven tooth wear.
- Vibration in the driveline at specific speeds: As the gear loses its precise tooth profile, imbalance occurs, causing noticeable vibration through the chassis between 40-60 km/h.
- Metal particles in transmission fluid: Flaking or chipping of the helical gear deposits metallic debris in the oil, which can be detected during routine fluid changes or filter inspections.
- Intermittent gear slipping or delayed engagement: Excessive backlash from a worn 2093.303.074 gear leads to hesitation when shifting between forward and reverse ranges.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.303.074 |
| Gear Type | Helical, single-cut |
| Material | Case-hardened alloy steel (16MnCr5 equivalent) |
| Outside Diameter | ~142 mm |
| Bore Diameter | ~35 mm |
| Face Width | ~32 mm |
| Module | 3.5 |
| Number of Teeth | 38 |
| Weight | ~1.8 kg |
| OEM Reference | ZF 2093.303.074 |
Compatibility
This helical gear is specifically designed for ZF WG100, WG130, and WG131 series transmissions. It also serves as a service part for certain WG180 and WG200 variants that share the same auxiliary drive architecture. Always verify the transmission serial number before ordering. The 2093.303.074 gear interfaces directly with the countershaft and is often replaced alongside the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING to ensure proper alignment and load distribution. For complete rebuilds, pairing this gear with the 2093209023: DIFFERENTIAL and the 5838300626: DIFFERENTIAL HOUSING is recommended for optimal gear mesh and housing integrity.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to output shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports gear shaft radial and axial loads |
| 2093209023 | DIFFERENTIAL | Secondary torque distribution unit |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential gear set |
| 0631329088 | SPRING PIN | Secures gear to shaft |
| 5838300811 | THRUST WASHER | Controls axial clearance |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 5838300633 | AXLE | Connects differential to wheel hub |
| 5838300753 | THRUST WASHER | Reduces friction on gear face |
| 5838300818 | THRUST WASHER | Secondary axial load management |
Frequently Asked Questions
Q: Can the 2093.303.074 helical gear be installed without replacing the mating shaft?
A: It is strongly recommended to inspect the countershaft for wear. If the shaft shows scoring or pitting, replace it simultaneously to prevent premature gear failure.
Q: How do I confirm this gear fits my WG130 transmission?
A: Check the transmission model plate located on the bell housing. The WG130 uses a 38-tooth helical gear on the auxiliary drive; count the teeth on your existing gear to verify compatibility.
Q: What torque specification is required for the retaining nut on this gear?
A: The retaining nut should be torqued to 180 Nm using a thread-locking compound. Always consult the ZF service manual for your specific transmission variant.
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ZF 2093.303.074 HELICAL GEAR – Gear RFQ Support
PartsZF helps B2B buyers source ZF 2093.303.074 HELICAL GEAR with fast RFQ support, expert part-number lookup, documentation review, and export coordination. This gear page is built from confirmed catalog, media, and reference data to reduce sourcing uncertainty for construction machinery transmission parts.
Part-Number Summary
Use ZF number 2093.303.074 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: COUNTERSHAFT
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 2093.303.074 |
|---|---|
| Normalized SKU | 2093303074 |
| Part name | HELICAL GEAR |
| Product category | gear |
| Cross-reference support | Available for RFQ review |
Image and Documentation Notes
Current product media status: diagram. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
Related Parts
- ZF 4646.302.128 HELICAL GEAR
- ZF 4143.316.088 PINION
- ZF 4657.302.007 INPUT GEAR
- ZF 4657.354.044 OUTPUT GEAR
- ZF 4644.306.326 GEAR SHIFT HOUSING
