ZF 4699.170.154 MOTOR | OEM Genuine Part

Overview

The ZF 4699.170.154 MOTOR is a critical hydraulic actuation component within ZF heavy-duty transmission assemblies, specifically engineered for construction machinery applications. This OEM genuine part converts hydraulic pressure into mechanical force to engage clutch packs and shift gears. Positioned within the valve body or directly on the transmission housing, the motor ensures precise oil flow control for smooth power delivery under extreme loads. The SKU 4699.170.154 is manufactured to ZF’s exacting tolerances, guaranteeing direct bolt-on replacement without modifications. When paired with the 4699101123 HOUSING and 4699301208 HOUSING, this motor forms the core of the transmission’s hydraulic control circuit.

Symptoms of Failure

• Delayed or harsh gear engagement — Worn internal seals cause pressure loss, leading to “transmission slipping when shifting” or abrupt clutch application.
• Hydraulic oil leaks near the motor housing — Degraded O-rings or cracked motor body result in visible fluid seepage, often accompanied by “ZF transmission fluid leak from side cover” complaints.
• Intermittent loss of drive in forward or reverse — Internal valve sticking prevents the motor from maintaining clutch pressure, causing “construction equipment transmission won’t move” scenarios.
• Erratic shifting under load — The motor fails to regulate oil flow, producing “transmission jerking when digging” or uneven power delivery during heavy operation.

Technical Specifications

Compatibility

This motor is designed for ZF’s WG series powershift transmissions commonly found in wheel loaders, excavators, and telehandlers. It directly fits the WG180, WG200, and WG250 models. The part also integrates with the 4699301017 BEARING COVER and 4699301085 COVER to seal the hydraulic chamber. For complete assembly, ensure the 0634303141 O-RING and 0734307425 PROTECTION CAP are replaced simultaneously to prevent contamination.

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