ZF 2093.322.034 BUSH | OEM Genuine Part

Overview

This OEM genuine ZF 2093.322.034 BUSH is a precision-engineered component designed to serve as a critical wear surface within the planetary gear sets of heavy-duty construction machinery transmissions. Positioned between rotating shafts and stationary housings, this bushing absorbs radial loads and maintains precise gear alignment under extreme torque conditions. The SKU 2093.322.034 is manufactured to ZF’s exacting tolerances, ensuring minimal friction and consistent oil film distribution. When installed alongside a 5838109012: DIFFERENTIAL, it forms a robust assembly that withstands the punishing cycles of earthmoving and material handling equipment.

Symptoms of Failure

• Erratic gear engagement and delayed shifting — When the bushing wall wears beyond specification, shaft play increases, causing hesitation during clutch pack engagement. This is a common “transmission slipping under load” complaint in ZF units.
• Metallic debris in transmission oil — Flaking or spalling of the bushing surface introduces bronze or steel particles into the hydraulic circuit, often flagged during routine oil analysis as “elevated copper content.”
• Low hydraulic pressure at the clutch pack — Excessive radial clearance allows oil to bypass the intended lubrication path, leading to pressure drops that trigger diagnostic trouble codes for “clutch pressure low.”
• Audible whining or knocking from the transmission housing — As the bushing loses its interference fit, the shaft begins to oscillate, producing a rhythmic noise that intensifies during acceleration or turning maneuvers.

Technical Specifications

Compatibility

This bushing is engineered for ZF’s heavy-duty powershift transmission families commonly deployed in wheel loaders, dozers, and graders. It is a direct replacement for units in the WG180, WG200, and WG250 series. Additionally, it appears in certain 4WG-310 and 6WG-200 models where planetary gear shafts require a replaceable wear sleeve. For a complete axle rebuild, pair this bushing with a 0750117075: TAPER ROLLER BEARING and a 2093209023: DIFFERENTIAL to restore factory clearance specifications. The housing assembly should also be inspected; a 5838300626: DIFFERENTIAL HOUSING may require replacement if the bore has become ovalized from prolonged bushing wear.

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Frequently Asked Questions

Q: How do I know if the ZF 2093.322.034 bushing is the correct replacement for my transmission?
A: Verify your transmission model number against the WG180, WG200, or WG250 series. Measure the shaft journal diameter; if it measures 45.00 mm, this bushing is the correct fit. Always replace the bushing in pairs when servicing planetary gear sets.

Q: Can I reuse the old bushing if it shows only minor scoring?
A: No. ZF specifies that this bushing is a single-use wear item. Even superficial scoring indicates the oil film has been compromised, which will accelerate wear on the mating shaft and the 5838300626: DIFFERENTIAL HOUSING bore.

Q: What torque specification applies to the retaining hardware when installing this bushing?
A: The bushing itself is a press-fit component; no retaining hardware is used. However, the adjacent 0631329088: SPRING PIN should be driven flush with the housing face to prevent migration. Refer to ZF service manual 4WG-200 for housing bolt torque values (typically 120 Nm).