ZF 2093.073.002 REAR AXLE | OEM Genuine Part

Overview

The ZF 2093.073.002 REAR AXLE is a critical structural and power-delivery component engineered for heavy-duty construction machinery. This OEM genuine part serves as the final drive housing and load-bearing assembly, transferring torque from the differential to the wheel hubs while supporting the vehicle’s static and dynamic weight. Positioned at the rear of the drivetrain, it integrates directly with the differential case and axle shafts. The SKU 2093.073.002 is precision-machined to ZF’s factory tolerances, ensuring exact fitment and long service life in demanding environments such as wheel loaders, graders, and telehandlers.

Symptoms of Failure

• Oil leaks at the axle flange or housing seam: Worn seals or cracks in the rear axle casting often cause visible fluid drips, leading to low lubricant levels and accelerated gear wear.
• Abnormal clunking or knocking from the rear driveline: A failing axle can produce metallic noises during acceleration or deceleration, indicating internal bearing or gear damage.
• Uneven tire wear or wheel wobble: When the rear axle housing becomes misaligned or its bearing surfaces degrade, it causes irregular tire contact and steering instability.
• Reduced power transmission to the wheels: A compromised axle assembly may slip or fail to transfer full engine torque, resulting in poor traction under load.

Technical Specifications

Parameter	Specification
Part Number	2093.073.002
OEM Reference	ZF 2093.073.002
Material	High-strength nodular cast iron (GGG-50)
Weight	Approx. 38.5 kg (84.9 lbs)
Overall Length	620 mm
Flange Diameter	180 mm
Bearing Journal Diameter	75 mm
Surface Treatment	Phosphated and oiled
Compatible Lubricant	SAE 80W-90 GL-5

Compatibility

This rear axle is designed for ZF’s heavy-duty transmission families commonly used in construction machinery. It is a direct replacement for models in the WG180, WG200, and WG210 series. Additionally, it fits select 4WG-180 and 4WG-200 power-shift transmissions found in compact and mid-size loaders. Always verify your transmission serial number against the OEM parts catalog to confirm fitment.

Installation Notes

When replacing the ZF 2093.073.002 REAR AXLE, it is essential to inspect and replace all adjacent wear items. The 2093109002 DIFFERENTIAL must be checked for gear backlash and bearing play. The 0750117075 TAPER ROLLER BEARING supports the axle shaft and should be replaced simultaneously to prevent premature failure. Also, examine the 2093209095 DIFFERENTIAL and the 2093309071 DIFF.HOUSING for cracks or warping. Always use new seals and gaskets during reassembly.

Related Components

Part Number	Name	Function
2093109002	DIFFERENTIAL	Distributes torque to axle shafts
0750117075	TAPER ROLLER BEARING	Supports axle shaft rotation
2093209095	DIFFERENTIAL	Secondary differential assembly
2093309071	DIFF.HOUSING	Encloses differential gears
0631100223	SPRING PIN	Secures gear alignment
0730300820	THRUST WASHER	Reduces axial friction
4482360002	AXLE BEVEL GEAR	Transfers power to wheel hub
2097309085	DIFFERENTIAL AXLE	Connects differential to wheel
5838300811	THRUST WASHER	Controls gear end-play
4482360001	DIFFERENTIAL BEVEL GEAR	Drives differential rotation

Frequently Asked Questions

Q: Can the ZF 2093.073.002 rear axle be used in a ZF WG180 transmission?
A: Yes, this part is fully compatible with the WG180 series. However, always cross-reference your transmission’s serial number to ensure the axle flange pattern matches.

Q: What torque specification should I use for the axle mounting bolts?
A: ZF recommends tightening the M16 mounting bolts to 210 Nm (155 ft-lbs) in a star pattern. Always consult your service manual for exact values.

Q: How do I know if my rear axle is worn out?
A: Look for oil leaks near the wheel seals, listen for a rhythmic grinding noise during turns, and check for excessive play by jacking up the wheel and rocking it top-to-bottom.