ZF 5838.300.150 RING | OEM Genuine Part

Overview

The ZF 5838.300.150 RING is a precision-engineered OEM genuine component designed for the internal gear train of heavy-duty construction machinery transmissions. This ring serves as a critical load-bearing interface within the planetary gear set, ensuring correct gear alignment and torque distribution under extreme operating conditions. The SKU 5838.300.150 is manufactured to ZF’s exacting tolerances, making it a direct replacement for worn or damaged rings in high-stress environments. When installed alongside a 5838109012: DIFFERENTIAL, this ring helps maintain the structural integrity of the final drive assembly, preventing axial movement and reducing vibration.

Symptoms of Failure

When the ZF 5838.300.150 RING begins to wear, operators will notice distinct performance issues. Look for these specific failure symptoms to diagnose the problem early:

• Transmission oil leaks around the planetary carrier – A worn ring can no longer seal the gear train, allowing hydraulic fluid to escape and causing low pressure warnings.
• Intermittent gear slipping under load – As the ring loses its dimensional accuracy, the gear mesh becomes loose, leading to power loss during excavation or lifting operations.
• Metallic grinding noises from the axle housing – Metal-on-metal contact occurs when the ring fails to properly space the 0750117075: TAPER ROLLER BEARING, resulting in audible wear.
• Increased backlash in the differential – Excessive play in the drivetrain indicates the ring is no longer providing the necessary preload to the 2093209023: DIFFERENTIAL assembly.

Technical Specifications

Compatibility

This ring is primarily designed for ZF’s heavy-duty construction machinery transmissions, including the WG180, WG200, and WG250 series. It is also compatible with certain off-highway models such as the 4WG200 and 5WG180, where it functions as a retaining ring for the planetary gear set. For proper installation, always pair this ring with a new 5838300626: DIFFERENTIAL HOUSING to ensure correct clearance and prevent premature wear.

Related Components

Frequently Asked Questions

Q: How do I know if the 5838.300.150 RING needs replacement?
A: If you observe oil seepage from the planetary carrier or hear a rhythmic clicking noise during acceleration, the ring is likely worn. Always inspect the ring surface for scoring or pitting before reassembly.

Q: Can I reuse the old ring if it looks clean?
A: No. ZF recommends replacing this ring every time the transmission is overhauled, as even minor wear can alter gear preload and lead to differential failure. Always install a new 5838300811: THRUST WASHER simultaneously.

Q: Is this ring compatible with the ZF 4WG200 transmission?
A: Yes, the 5838.300.150 ring is a direct fit for the 4WG200, 5WG180, and WG250 series. For the WG180, verify the axle housing part number matches 5838300626: DIFFERENTIAL HOUSING.