Overview
The ZF 2093.310.013 CONNECTION COVER is a critical sealing and structural component designed for heavy-duty construction machinery transmissions. This OEM genuine part, identified by SKU 2093.310.013, serves as the primary interface between the differential housing and the main transmission casing. It ensures proper alignment of internal rotating assemblies while preventing contamination ingress and lubricant egress. In ZF power divider units, this cover houses the mounting points for the 2093109006: DIFFERENTIAL assembly, maintaining precise gear mesh under extreme torque loads. Without this cover, the transmission’s internal pressure regulation and structural rigidity are compromised, leading to premature wear of adjacent components.
Symptoms of Failure
- Hydraulic fluid seepage around the transmission bell housing: When the connection cover gasket surface degrades, oil leaks become visible during operation, often mistaken for axle seal failures.
- Abnormal whining noise during load shifts: A worn cover allows the 2093209095: DIFFERENTIAL to shift out of alignment, creating metal-on-metal contact sounds.
- Intermittent gear slippage in WG-series transmissions: Loss of cover rigidity causes the 0750117075: TAPER ROLLER BEARING preload to fluctuate, resulting in inconsistent power delivery.
- Visible cracks or deformation near bolt holes: Thermal cycling and vibration fatigue cause the cast housing to fracture, requiring immediate replacement to avoid catastrophic differential failure.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 2093.310.013 |
| Material | GGG-40 Nodular Cast Iron |
| Overall Diameter | 285 mm |
| Bolt Hole Pattern | 12 x M12 on 240 mm PCD |
| Weight | 4.8 kg (10.6 lbs) |
| OEM Reference | ZF 2093.310.013 |
| Sealing Surface Finish | Ra 0.8 µm |
Compatibility
This connection cover is engineered for ZF WG-series powershift transmissions commonly found in wheel loaders, graders, and heavy forklifts. Verified compatible models include WG180, WG200, WG210, and WG250 series. It also interfaces with the 2093309071: DIFF.HOUSING in off-highway dump trucks. Always verify bolt pattern alignment with your specific transmission serial number before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109006 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports differential carrier rotation |
| 2093209095 | DIFFERENTIAL | Secondary torque split unit |
| 2093309071 | DIFF.HOUSING | Encloses differential gear set |
| 0631100223 | SPRING PIN | Secures shift fork alignment |
| 0730300820 | THRUST WASHER | Controls axial play in differential |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2097309085 | DIFFERENTIAL AXLE | Connects side gears to wheels |
| 5838300811 | THRUST WASHER | Reduces friction on gear faces |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear mesh in differential |
Frequently Asked Questions
Q: Can I reuse the old gasket when installing this connection cover?
A: No. ZF specifies a new gasket or anaerobic sealant for every 2093.310.013 installation. Reusing old seals guarantees oil leaks within 50 operating hours due to compression set.
Q: Does this cover fit ZF 4WG-200 transmissions with serial numbers below 5000?
A: Yes, but early models require a 2 mm thicker gasket (part 0730300820) to compensate for housing machining variations. Always measure the recess depth before final torque.
Q: What torque specification applies to the cover bolts?
A: Tighten M12 bolts to 95 Nm in a cross-pattern sequence, then apply an additional 60-degree angle turn. This ensures proper preload on the taper roller bearing assembly.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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