Overview
The ZF 4699.109.110 BRAKE PARTS assembly is a critical OEM genuine component engineered for the internal braking system within ZF construction machinery transmissions. This part number, SKU 4699.109.110, functions as the primary friction interface that modulates torque and provides holding force during operation. Positioned directly within the planetary gearset housing, this brake pack interacts closely with the 4699101152: HOUSING to contain hydraulic pressure and dissipate thermal loads. The assembly is secured by the 0636101411: CAP SCREW and aligned via the 0631302212: CYLINDRICAL PIN, while the 4699309059: HOUSING COVER seals the unit against contamination. Without this genuine brake component, the transmission cannot achieve proper clutch engagement or stationary holding torque.
Symptoms of Failure
- Transmission oil leaks at the brake housing interface: Worn seals or degraded friction material in the 4699.109.110 assembly often cause hydraulic fluid to weep past the 4699309059: HOUSING COVER, leaving visible drips under the machine.
- Gear slipping under load during forward/reverse shifts: When the brake pack loses clamping force, the transmission fails to hold torque, resulting in delayed engagement or complete slip when the machine is under heavy load.
- Erratic braking or jerky deceleration: A failing brake part causes inconsistent pressure modulation, leading to harsh or unpredictable stops, particularly in stop-and-go construction cycles.
- Metallic grinding noise from the transmission housing: Excessive wear on the friction discs produces audible metal-on-metal contact, often accompanied by debris in the oil filter.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 4699.109.110 |
| Component Type | Brake Parts Assembly |
| Material | Sintered Bronze Friction Discs / Steel Reaction Plates |
| Outer Diameter | 180 mm (estimated) |
| Inner Diameter | 120 mm (estimated) |
| Total Thickness (stacked) | 45 mm (estimated) |
| Weight | 2.8 kg (estimated) |
| OEM Reference | ZF 4699.109.110 |
| Operating Pressure | 12-18 bar |
| Temperature Range | -20°C to +120°C |
Compatibility
This genuine ZF brake part is designed for use in the following transmission models commonly found in construction machinery such as wheel loaders, dozers, and graders:
- ZF WG180
- ZF WG200
- ZF WG210
- ZF WG310
- ZF 4WG-200
- ZF 4WG-310
Always verify the existing part number before installation. The 4699.109.110 brake assembly is not interchangeable with earlier revision brake packs without also replacing the 4699101152: HOUSING and associated fasteners.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101152 | HOUSING | Encloses and supports the brake pack assembly |
| 4699309059 | HOUSING COVER | Seals the brake housing and retains hydraulic pressure |
| 0636101411 | CAP SCREW | Secures the housing cover to the transmission case |
| 0631302212 | CYLINDRICAL PIN | Aligns the brake pack components during assembly |
| 0636302013 | SCREW PLUG | Seals hydraulic passages in the brake circuit |
| 0750108986 | SCREW PLUG | Secondary plug for pressure test ports |
| 0634801038 | SEALING RING | Prevents oil leaks at plug interfaces |
| 0769100082 | TYPE PLATE | Identification label for transmission model |
| 0637885613 | BREATHER | Equalizes internal pressure and vents moisture |
| 4699102187 | INPUT | Transfers torque from engine to brake pack |
