Overview
The ZF 4699.170.033 MOTOR is a critical hydraulic actuation component within ZF powershift transmissions used in heavy construction machinery. This OEM genuine part converts hydraulic pressure into precise mechanical force to engage clutch packs and control gear selection. Positioned inside the transmission valve body assembly, the motor interfaces directly with the 4699101080: HOUSING to ensure reliable oil flow direction. The SKU 4699.170.033 is engineered to ZF’s exacting tolerances, making it essential for maintaining shift quality and preventing driveline damage in loaders, graders, and dozers.
Symptoms of Failure
- Delayed or harsh gear engagement – When the motor wears internally, hydraulic pressure drops, causing noticeable lag or clunking when shifting from neutral to drive or reverse.
- Transmission overheating – A failing motor can cause constant clutch slippage, generating excess heat that triggers warning lights or reduces machine performance.
- Intermittent loss of forward or reverse – Worn seals inside the motor allow cross-leakage, leading to unexpected loss of a gear range during operation.
- Hydraulic oil contamination – Debris from a degraded motor can circulate through the system, damaging the 0634306309: O-RING and other seals.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4699.170.033 |
| Type | Hydraulic Shift Motor |
| Material | Hardened Steel / Aluminum Alloy |
| Weight | 1.8 kg (4.0 lbs) |
| Operating Pressure | 18–25 bar (260–360 psi) |
| OEM Reference | ZF 4699.170.033 |
| Seal Compatibility | NBR / FKM (Viton) |
Compatibility
This motor is designed for ZF WG series transmissions commonly found in construction machinery. It is a direct fit for the WG180, WG200, and WG210 models. It also applies to select Ergopower and Ecomix drivelines used in wheel loaders and telehandlers. Always verify the 0501329881: HOUSING COVER and 0630513065: SNAP RING condition during replacement to ensure proper assembly.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101080 | HOUSING | Encloses motor and directs hydraulic flow |
| 0501329881 | HOUSING COVER | Seals the motor cavity |
| 0630513065 | SNAP RING | Retains motor shaft assembly |
| 0634306309 | O-RING | Prevents external oil leaks |
| 0637885612 | BREATHER | Equalizes internal pressure |
| 0501319149 | SCREW PLUG | Closes test ports |
| 0636302022 | SCREW PLUG | Seals drain passages |
| 0634801038 | SEALING RING | Provides leak-proof joint |
| 0730365801 | TYPE PLATE | Identifies transmission model |
| 4699001084 | GK10 | Gasket kit for motor housing |
