ZF 2099.247.026 TUBE | OEM Genuine Part

Overview

The ZF 2099.247.026 TUBE is a precision-engineered hydraulic fluid conduit designed for the lubrication and cooling circuits within heavy-duty ZF construction machinery transmissions. This OEM genuine part, identified by SKU 2099.247.026, directs pressurized oil to critical gear interfaces and bearing surfaces, ensuring consistent thermal regulation and friction reduction. It is typically mounted internally within the transmission housing, connecting the valve body to the rotating assembly. When replacing this tube, it is common practice to inspect the 2099109002 DIFFERENTIAL for wear, as debris from a failing tube can compromise differential gear clearances.

Symptoms of Failure

• Hydraulic oil seepage at transmission housing seams: A cracked or corroded 2099.247.026 tube will allow pressurized ATF to escape, often presenting as a slow drip near the bell housing or mid-plate gasket.
• Intermittent gear slipping under load: Insufficient oil delivery due to a restricted or leaking tube causes clutch pack starvation, leading to hesitation or slippage when the machine is under heavy torque demand.
• Elevated transmission operating temperature: A compromised tube disrupts the oil flow path to the cooler circuit, causing the transmission to run 15-20°C hotter than normal during extended operation.
• Whining noise from the differential area: Reduced lubrication to the 2099364014 CROWN WHEEL and pinion set creates a high-pitched metallic whine that increases with road speed.

Technical Specifications

Compatibility

This tube is a direct-fit component for ZF WG series powershift transmissions commonly found in wheel loaders, graders, and telehandlers. It is specifically validated for use in the WG180, WG200, and WG211 models. The part also integrates with the 2098309010 DIFFERENTIAL HOUSING assembly in these units. For WG310 and WG350 variants, verify the tube routing geometry, as minor dimensional differences may exist in later production runs.

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