Overview
The ZF 4699.109.069 BRAKE is a critical OEM genuine friction component designed to manage torque load and provide controlled deceleration within ZF heavy-duty powershift transmissions. Positioned directly on the output shaft assembly, this brake pack engages to hold the transmission stationary during park conditions and assists in smooth directional shifts under load. The SKU 4699.109.069 is engineered to withstand high thermal stress and repetitive engagement cycles typical in construction machinery applications. For proper sealing and structural integrity, this brake assembly interfaces directly with the 4699101105: HOUSING and is protected by the 0501329881: HOUSING COVER, which must be inspected during any brake service.
Symptoms of Failure
- Transmission creep when parked: Worn brake discs allow the vehicle to inch forward or backward on an incline, indicating the 4699.109.069 has lost clamping force.
- Delayed or harsh directional shifts: A failing brake cannot release or apply smoothly, causing a noticeable clunk or hesitation when moving from forward to reverse.
- Darkened or contaminated transmission fluid: Excessive friction material shedding from the brake pack turns the oil a burnt brown color and often carries a distinct odor.
- Reduced braking power under load: Operators may notice the machine requires longer stopping distances or the brake pedal feels spongy, pointing to internal wear of the 4699.109.069 assembly.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 4699.109.069 |
| Type | Wet Multi-Disc Brake Pack |
| Outer Diameter | 195 mm (estimated) |
| Inner Diameter | 135 mm (estimated) |
| Thickness (assembled) | 42 mm |
| Material | Sintered Bronze on Steel Core |
| Weight | 1.8 kg (approx.) |
| OEM Reference | ZF 4699.109.069 |
| Operating Pressure | 12–18 bar |
Compatibility
This brake part is primarily utilized in ZF WG series powershift transmissions commonly found in wheel loaders, telehandlers, and graders. The 4699.109.069 is a direct fit for the ZF WG180, WG200, and WG210 transmission models. It also appears in certain variants of the ZF 4WG-200 and 4WG-210 series. Always verify the spline count and disc stack height against your existing assembly before installation. During replacement, it is recommended to also replace the 0634306309: O-RING and the 0637885612: BREATHER to prevent contamination ingress.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101105 | HOUSING | Encloses and aligns the brake pack assembly |
| 0501329881 | HOUSING COVER | Seals the housing and retains hydraulic pressure |
| 0634306309 | O-RING | Prevents fluid leaks between mating surfaces |
| 0637885612 | BREATHER | Equalizes internal pressure and vents moisture |
| 0501319149 | SCREW PLUG | Seals oil passages in the housing |
| 0636302022 | SCREW PLUG | Provides access port for pressure testing |
| 0634801038 | SEALING RING | Ensures a leak-proof joint on hydraulic connections |
| 0730365801 | TYPE PLATE | Identification label for transmission model |
| 4699001144 | GK10 | Gear kit for output shaft speed reduction |
| 4699102083 | INPUT | Input shaft assembly transferring engine torque |
