Overview
The ZF 4699.109.104 BRAKE PARTS component is a critical OEM genuine assembly designed to manage braking force within ZF construction machinery transmissions. Specifically engineered to interface with the hydraulic clutch pack and planetary gear sets, this part ensures controlled deceleration and holding torque during heavy-duty operations. As an integral element of the transmission’s braking system, the SKU 4699.109.104 directly influences machine safety and operational precision. When installed alongside the 4699101161: HOUSING, it forms a sealed unit that protects internal friction surfaces from contamination. This genuine ZF part is manufactured to exacting tolerances, guaranteeing consistent performance in excavators, wheel loaders, and other off-highway equipment.
Symptoms of Failure
- Transmission brake drag or incomplete release: Worn 4699.109.104 components can cause the brake to remain partially engaged, leading to overheating and reduced fuel efficiency. This often manifests as a “transmission brake drag” symptom during operation.
- Oil leaks near the brake housing assembly: Degraded seals within this part allow transmission fluid to escape, visible as drips around the 4699309058: HOUSING COVER. This is a common “ZF transmission oil leak” issue.
- Intermittent gear slipping under load: When the brake parts fail to hold torque, the transmission may slip during heavy lifting or climbing, a classic “ZF gear slipping under load” failure mode.
- Unusual grinding or chattering noises: Metal fatigue or friction material wear in the 4699.109.104 produces audible grinding sounds, particularly during low-speed maneuvering.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 4699.109.104 |
| Material | High-strength steel alloy with sintered bronze friction lining |
| Weight | 1.85 kg (4.08 lbs) |
| Dimensions (OD x ID x Height) | 180 mm x 120 mm x 35 mm |
| OEM Reference | ZF 4699.109.104 (Genuine) |
| Torque Capacity | 450 Nm (estimated) |
| Operating Temperature Range | -20°C to +120°C |
Compatibility
This brake part is primarily compatible with ZF WG180, WG200, and WG211 series transmissions commonly used in construction machinery such as wheel loaders, graders, and dump trucks. It also fits select variants of the ZF 4WG-200 and 6WG-200 power shift transmissions. For proper fitment, verify that your transmission housing uses the 0636101411: CAP SCREW and 0631302212: CYLINDRICAL PIN for alignment. Always cross-reference your existing part number with the OEM catalog before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101161 | HOUSING | Encloses and supports the brake assembly |
| 4699309058 | HOUSING COVER | Seals the housing and retains lubricant |
| 0636101411 | CAP SCREW | Secures housing components together |
| 0631302212 | CYLINDRICAL PIN | Aligns and locates mating parts |
| 0636302013 | SCREW PLUG | Seals fluid passages in the housing |
| 0750108986 | SCREW PLUG | Provides secondary sealing for ports |
| 0634801038 | SEALING RING | Prevents oil leaks between joints |
| 0769100082 | TYPE PLATE | Identifies transmission model and specs |
| 0637885613 | BREATHER | Equalizes pressure and vents moisture |
| 4699102187 | INPUT | Transfers torque from engine to transmission |
