Overview
The ZF 2093.310.091 SPUR GEAR is a precision-machined component engineered for the WG100, WG130, and WG131 transmission series. This OEM genuine part transfers rotational force between parallel shafts within the gear train, ensuring smooth power delivery and load distribution. Positioned in the intermediate shaft assembly, the spur gear (SKU: 2093.310.091) directly interacts with the 2093109013: DIFFERENTIAL to modulate torque output. Manufactured from case-hardened alloy steel, it maintains precise tooth geometry under high cyclic loads, reducing vibration and extending service intervals in heavy-duty industrial applications.
Symptoms of Failure
- Whining or howling noise during acceleration: Worn tooth profiles on the 2093.310.091 cause irregular meshing, producing a distinct metallic whine that intensifies under load. This often indicates pitting or spalling on the gear flanks.
- Transmission oil contamination with metallic particles: As the spur gear degrades, microscopic steel fragments shed into the lubricant. Inspect the oil for a silver or gray sheen—a clear sign of gear surface fatigue.
- Intermittent gear slipping under torque: Excessive backlash from a worn 2093.310.091 allows the gear to momentarily lose engagement, causing a momentary loss of drive power. This symptom is especially noticeable during uphill climbs or heavy hauling.
- Vibration in the driveline at cruising speeds: Uneven wear on the spur gear creates rotational imbalance, transmitting vibrations through the transmission housing and into the chassis.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2093.310.091 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Tooth Count | 32 |
| Module | 4.5 mm |
| Outside Diameter | 153.0 mm |
| Bore Diameter | 45.0 mm |
| Face Width | 38.0 mm |
| Weight | 2.85 kg |
| OEM Reference | ZF 2093.310.091 |
Compatibility
This spur gear is designed for ZF WG-series transmissions, specifically the WG100, WG130, and WG131 models. It is also compatible with the WG180 and WG200 variants when used in the intermediate shaft position. For proper installation, pair the 2093.310.091 with the 0750117075: TAPER ROLLER BEARING to support axial loads, and verify alignment with the 2093209096: DIFFERENTIAL assembly. The 2093309073: DIFF.HOUSING provides the structural enclosure for these components. Always consult your transmission’s serial number to confirm fitment before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109013 | DIFFERENTIAL | Distributes torque between output shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports radial and axial shaft loads |
| 2093209096 | DIFFERENTIAL | Secondary torque distribution unit |
| 2093309073 | DIFF.HOUSING | Encloses differential gears and bearings |
| 0631100223 | SPRING PIN | Secures gear alignment on shaft |
| 0730300820 | THRUST WASHER | Reduces axial friction between rotating parts |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to axle shafts |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to wheel hubs |
| 5838300811 | THRUST WASHER | Controls axial clearance in gear sets |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Enables speed differentiation between wheels |
Frequently Asked Questions
Q: Can the 2093.310.091 spur gear be used in a ZF WG180 transmission?
A: Yes, this gear is compatible with WG180 models when installed in the intermediate shaft position. Always verify tooth count and bore diameter against your existing part before replacement.
Q: What causes premature wear on this spur gear?
A: Common causes include inadequate lubrication, misalignment of the 0750117075: TAPER ROLLER BEARING, or contamination from a failing 2093309073: DIFF.HOUSING seal. Regular oil analysis helps detect early wear.
Q: Is the 2093.310.091 supplied with mounting hardware?
A: No, this is the spur gear only. You will need to order the 0631100223: SPRING PIN separately to secure it to the shaft.
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