Overview
The ZF 4699.170.060 MOTOR is a critical hydraulic actuation component within ZF heavy-duty powershift transmissions, commonly found in construction machinery such as wheel loaders, dozers, and graders. This OEM genuine part converts hydraulic pressure into mechanical force to engage specific clutch packs, enabling smooth gear shifts and directional changes. As a motor unit, it sits directly on the transmission valve body or housing, receiving pressurized oil to drive the shift mechanism. The SKU 4699.170.060 is engineered to exact ZF tolerances, ensuring reliable operation under high load and extreme vibration conditions common in earthmoving equipment.
Symptoms of Failure
- Delayed or erratic gear engagement: When the 4699.170.060 motor wears internally, hydraulic pressure drops, causing sluggish shifts or a noticeable pause before the transmission engages forward or reverse.
- Transmission overheating due to clutch slip: A failing motor may not fully pressurize the clutch pack, leading to partial engagement and excessive friction, which generates heat and accelerates wear on surrounding components.
- Oil leaks around the motor housing: Worn seals or a cracked motor body can cause hydraulic fluid to weep from the mounting area, often visible as drips on the transmission casing or under the machine.
- Intermittent loss of drive under load: As internal components degrade, the motor may fail to maintain pressure during heavy digging or pushing, resulting in sudden neutral conditions that disrupt operation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 4699.170.060 |
| Type | Hydraulic Shift Motor |
| Material | High-strength cast iron with hardened steel internals |
| Weight | Approx. 4.2 kg (9.3 lbs) |
| Dimensions (L x W x H) | 180 mm x 95 mm x 85 mm |
| OEM Reference | ZF 4699.170.060 |
| Operating Pressure | 18-25 bar (260-360 psi) |
| Seal Type | NBR (Nitrile) O-rings and PTFE backup rings |
Compatibility
This motor is designed for integration into ZF’s WG series powershift transmissions, specifically models WG180, WG200, and WG250. These transmissions are widely used in construction machinery from manufacturers like Liebherr, Caterpillar, and Volvo. The 4699.170.060 motor interfaces directly with the 4699100019: BASIC PARTS kit, which includes necessary seals and fasteners for installation. It also mounts onto the 4699300139: HOUSING, which channels hydraulic fluid to the clutch assembly. For full clutch pack actuation, this motor works in tandem with the 4699300156: GEAR SHAFT and the 4699300127: PLANET CARRIER to distribute torque. Always verify transmission model and serial number before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699100019 | BASIC PARTS | Installation kit with seals and hardware |
| 4699300139 | HOUSING | Motor mounting and fluid distribution |
| 4699300156 | GEAR SHAFT | Torque transfer to clutch packs |
| 4699300127 | PLANET CARRIER | Planetary gear support and load distribution |
| 4699300098 | INNER DISK CARRIER | Clutch disk retention and alignment |
| 4699200011 | RING GEAR | Final drive engagement |
| 4699300152 | TOOTHED DISC | Friction surface for clutch engagement |
| 4699300153 | RING GEAR | Secondary ring gear for planetary sets |
| 4699300154 | RING | Retaining and spacing ring |
| 4699300128 | PLANETARY GEAR | Planet gear for torque multiplication |
