ZF 5838.300.085 BUSH | OEM Genuine Part

Overview

Precision-engineered for heavy-duty driveline applications, the ZF 5838.300.085 BUSH serves as a critical wear surface within the planetary gearset of select ZF construction machinery transmissions. This OEM genuine part, identified by SKU 5838.300.085, acts as a sacrificial liner that reduces friction between rotating shafts and stationary housings, ensuring consistent torque transfer under extreme loads. By maintaining tight clearances, it prevents metal-on-metal contact that can lead to catastrophic gear failure. This bushing is frequently replaced in tandem with the 5838109012: DIFFERENTIAL to restore proper alignment in the final drive assembly.

Symptoms of Failure

When the 5838.300.085 bushing wears beyond tolerance, operators will notice distinct performance degradation. Transmission whining noise under load is a primary indicator, as the hardened steel shaft begins to vibrate against the worn bushing bore. Intermittent gear slipping during uphill operation occurs when the bushing clearance allows the shaft to shift axially, disrupting gear mesh. Metallic debris in the transmission oil filter signals that the bushing’s bronze or steel lining is shedding particles into the lubrication system. Oil seepage from the axle housing seal can also develop, as a worn bushing allows the shaft to wobble, distorting the seal lip.

Technical Specifications

Compatibility

This bushing is designed for integration into ZF’s heavy-duty powershift transmission series commonly found in wheel loaders and graders. It is a direct fit for the ZF WG180 and ZF WG200 transmission models, where it supports the output shaft within the differential housing. It also applies to the ZF 4WG-200 and ZF 6WG-250 variants used in construction machinery. When rebuilding the final drive, always inspect the 5838300626: DIFFERENTIAL HOUSING for scoring, and replace the 0750117075: TAPER ROLLER BEARING if play is detected. For complete axle overhaul, the 2093209023: DIFFERENTIAL should be paired with this bushing to ensure concentric rotation.

Related Components

Frequently Asked Questions

Q: Can I reuse the old bushing if it looks clean?
A: No. The 5838.300.085 bushing is a consumable wear item. Even if it appears clean, microscopic wear will have increased clearance beyond factory spec, leading to premature failure of the differential gears.

Q: How do I know if this bushing fits my ZF WG180 transmission?
A: Verify the transmission serial number plate. The 5838.300.085 is used in WG180 and WG200 series with output shaft diameters of 45 mm. If your unit uses a 50 mm shaft, you will need the larger variant (5838.300.086).

Q: Should I replace the taper roller bearing at the same time?
A: Yes. A worn 0750117075: TAPER ROLLER BEARING will cause the shaft to run off-center, accelerating bushing wear. Always replace both components as a matched set for optimal service life.