Overview
The ZF 0501.323.876 RECTANGULAR RING is a precision-engineered sealing component designed to maintain hydraulic integrity within the transmission sump and valve body interface. Positioned between the differential housing and the main gear case, this OEM genuine part prevents cross-contamination of lubricants and ensures consistent pressure regulation during heavy-load operations. The SKU 0501.323.876 is manufactured to ZF’s original dimensional tolerances, making it a direct replacement for worn seals in construction machinery transmissions. When installed alongside a 2093109002: DIFFERENTIAL, this rectangular ring forms a critical barrier against debris ingress and fluid migration.
Symptoms of Failure
- Oil seepage at transmission bell housing: A degraded rectangular ring allows transmission fluid to escape past the differential interface, leaving visible wet spots on the casing exterior.
- Erratic gear engagement under load: When the seal loses elasticity, hydraulic pressure drops cause delayed or harsh shifting during excavation or grading operations.
- Contaminated differential oil: A failed ring permits cross-flow between the main transmission and the 2093209095: DIFFERENTIAL assembly, resulting in metallic sludge accumulation.
- Audible whining from the driveline: Loss of seal compression allows the 0750117075: TAPER ROLLER BEARING to operate with insufficient lubrication, generating high-frequency noise.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 0501.323.876 |
| Type | Rectangular Cross-Section Ring |
| Material | Nitrile Rubber (NBR) with Aramid Fiber Reinforcement |
| Inner Diameter | 89.5 mm |
| Outer Diameter | 102.3 mm |
| Cross-Section Width | 4.2 mm |
| Weight | 18 grams |
| Hardness (Shore A) | 75 ± 5 |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF 0501.323.876 |
Compatibility
This rectangular ring is engineered for ZF power shift transmissions commonly used in wheel loaders, graders, and telehandlers. It is a direct fit for the following transmission models: WG180, WG200, WG210, and 4WG200. The seal interfaces directly with the 2093309071: DIFF.HOUSING flange, requiring no modifications for installation. Always verify the housing bore condition before fitting a new ring to ensure proper compression.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2093109002 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports differential shaft rotation |
| 2093209095 | DIFFERENTIAL | Secondary torque split unit |
| 2093309071 | DIFF.HOUSING | Encloses differential gear set |
| 0631100223 | SPRING PIN | Retains shift fork alignment |
| 0730300820 | THRUST WASHER | Reduces axial play in gear stack |
| 4482360002 | AXLE BEVEL GEAR | Transfers power to wheel hubs |
| 2097309085 | DIFFERENTIAL AXLE | Connects differential to final drive |
| 5838300811 | THRUST WASHER | Controls side gear clearance |
| 4482360001 | DIFFERENTIAL BEVEL GEAR | Primary gear in differential set |
Frequently Asked Questions
Q: Can I reuse the old rectangular ring if it looks intact?
A: No. ZF rectangular rings are single-use components because the NBR material takes a compression set after the initial torque cycle. Reusing a ring almost always leads to micro-leaks within 50 operating hours.
Q: Does this ring require any sealant during installation?
A: No additional sealant is needed. The ring is designed to seal through mechanical compression alone. Applying RTV or anaerobic compounds can actually prevent proper seating and cause extrusion failure.
Q: How do I confirm the ring is seated correctly in the housing groove?
A: After installation, the ring should sit flush with the housing face—no more than 0.2 mm proud. Use a straightedge across the 2093309071: DIFF.HOUSING flange to verify uniform contact before bolting the assembly together.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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