Overview
The ZF 4699.170.153 MOTOR is a critical hydraulic actuation component within the final drive assembly of heavy-duty construction machinery transmissions. This OEM genuine part converts hydraulic pressure into precise rotational force, engaging the clutch packs that control gear selection and machine direction. Positioned directly on the transmission housing, the motor interfaces with the 4699100022: BASIC PARTS kit to ensure proper sealing and mounting integrity. The SKU 4699.170.153 is engineered to ZF’s exacting tolerances, providing consistent torque output for demanding earthmoving applications.
Symptoms of Failure
- Intermittent gear engagement delay: When the motor loses internal seal integrity, operators notice a 2-3 second lag between lever movement and gear engagement, especially under cold hydraulic oil conditions.
- Hydraulic fluid contamination: Worn internal pistons allow metal debris to circulate, often detected during routine oil sampling. This directly impacts the 4699300138: HOUSING integrity over time.
- Unusual whining or grinding noise: A high-pitched sound during directional shifts indicates bearing wear within the motor assembly, frequently misdiagnosed as a 4699300156: GEAR SHAFT issue.
- Transmission overheating: A failing motor creates excessive internal leakage, generating heat that accelerates wear on the 4699300127: PLANET CARRIER assembly.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4699.170.153 |
| Type | Hydraulic Piston Motor |
| Maximum Operating Pressure | 250 bar (3,625 psi) |
| Displacement | 28.3 cm³/rev |
| Housing Material | High-grade ductile iron (GJS-500-7) |
| Seal Material | NBR (Nitrile Butadiene Rubber) |
| Weight | 4.7 kg (10.4 lbs) |
| Mounting Bolt Torque | 85 Nm (62.7 lb-ft) |
| OEM Reference | ZF 4699.170.153 |
Compatibility
This motor is designed for ZF’s WG series powershift transmissions commonly found in wheel loaders, telehandlers, and graders. Primary compatibility includes the WG180, WG200, and WG210 models produced between 2005-2020. It also fits select ErgoPower and Ecolife variants used in mid-size construction machinery. Always verify the transmission serial number against the 4699300098: INNER DISK CARRIER and 4699200011: RING GEAR specifications for proper fitment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699100022 | BASIC PARTS | Sealing and mounting hardware kit |
| 4699300138 | HOUSING | Motor enclosure and fluid routing |
| 4699300156 | GEAR SHAFT | Torque transmission to planetary set |
| 4699300127 | PLANET CARRIER | Planetary gear support structure |
| 4699300098 | INNER DISK CARRIER | Clutch disk retention hub |
| 4699200011 | RING GEAR | Final drive reduction ring |
| 4699300152 | TOOTHED DISC | Clutch friction plate |
| 4699300153 | RING GEAR | Secondary reduction ring |
| 4699300154 | RING | Snap ring for shaft retention |
| 4699300128 | PLANETARY GEAR | Planet gear for load distribution |
