ZF 4699.801.288 GK10LD | OEM Genuine Part

Overview

The ZF 4699.801.288 GK10LD is a genuine OEM gear cluster assembly engineered for the power take-off (PTO) section of heavy-duty construction machinery transmissions. This component functions as the primary speed reduction and torque multiplication unit within the auxiliary drive system, directly coupling engine power to hydraulic pumps or winch drives. The SKU 4699.801.288 identifies a precision-machined assembly that interfaces with the main shaft housing and output flange to ensure synchronized power delivery under extreme load cycles. As a critical wear item in ZF’s modular transmission architecture, this part maintains the gear mesh integrity required for continuous operation in excavators, cranes, and drilling rigs.

Symptoms of Failure

• Intermittent gear slipping under load: When the GK10LD cluster teeth wear beyond tolerance, operators report sudden loss of hydraulic pressure during digging or lifting cycles, often accompanied by a metallic grinding noise from the PTO housing.
• Oil leaks at the housing interface: Deterioration of the sealing surfaces on the 4699.801.288 assembly allows transmission fluid to weep past the HOUSING joint, visible as dark streaks on the bell housing during daily inspections.
• Vibration in neutral or low RPM: Worn bearing journals within the gear cluster create harmonic oscillations that transfer through the OUTPUT shaft, felt as a low-frequency shudder in the operator cab at idle.
• Delayed engagement of auxiliary systems: Excessive backlash in the gear set causes a 1-2 second lag when activating PTO-driven equipment, a symptom that worsens as the INPUT splines wear.

Technical Specifications

Compatibility

This genuine ZF 4699.801.288 GK10LD gear cluster is designed for integration into the following transmission families: WG180, WG200, WG210, and WG250 series. It is also compatible with select ZF-ECOMIX and ZF-PowerLine auxiliary drive modules used in wheel loaders and crawler dozers. The part directly replaces the earlier 4699001195: GK10LD variant with improved tooth geometry for higher torque capacity. Always verify the housing casting number before installation, as the HOUSING bore tolerance must match the cluster’s outer diameter to prevent preload failure.

Related Components