Overview
The ZF 4699.270.005 ASSEMBLY PARTS is a critical OEM genuine component engineered for high-stress planetary gear sets within ZF construction machinery transmissions. This precision-machined assembly sits directly in the torque path, managing load distribution between the sun gear and planet carrier to ensure smooth power transfer under heavy excavation and loading cycles. The SKU 4699.270.005 is specifically designed to maintain axial alignment and reduce friction in ZF WG-series transmissions, directly influencing overall drivetrain durability. When paired with the 4699100022: BASIC PARTS and the 4699300138: HOUSING, this assembly forms the core of the transmission’s load-bearing architecture.
Symptoms of Failure
- Intermittent gear slipping under load: When the 4699.270.005 assembly wears, operators often report sudden loss of drive power during uphill grading or bucket filling, a classic sign of internal clearance degradation.
- Metallic grinding noise from transmission sump: Worn assembly components produce a distinct high-pitched whine or grinding sound, especially during gear shifts, indicating excessive play between the 4699300156: GEAR SHAFT and the assembly.
- Contaminated transmission fluid with bronze particles: Visual inspection of the oil filter often reveals fine metallic debris, directly linked to the breakdown of the assembly’s thrust washers or needle bearings.
- Delayed engagement when shifting from neutral to drive: A lag of 2-3 seconds before power engages suggests the assembly is no longer maintaining proper preload, often requiring replacement of the 4699300127: PLANET CARRIER alongside this part.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4699.270.005 |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 2.85 kg (6.28 lbs) |
| Outer Diameter | 148.0 mm |
| Inner Diameter | 72.5 mm |
| Overall Height | 38.2 mm |
| OEM Reference | ZF 4699.270.005 |
| Torque Capacity | 4,200 Nm (max) |
Compatibility
This assembly is engineered for ZF WG-series powershift transmissions commonly found in wheel loaders, excavators, and telehandlers. Verified compatible models include the ZF WG180, ZF WG200, and ZF WG210 series. It also fits select ZF 4WG-200 and ZF 6WG-250 variants used in heavy construction machinery from manufacturers like Liebherr, Caterpillar, and Volvo CE. Always cross-reference your transmission serial number with the 4699300138: HOUSING to confirm compatibility.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699100022 | BASIC PARTS | Foundation kit for transmission rebuild |
| 4699300138 | HOUSING | Encloses planetary gear assembly |
| 4699300156 | GEAR SHAFT | Transfers torque from input to planetary set |
| 4699300127 | PLANET CARRIER | Holds planetary gears in alignment |
| 4699300098 | INNER DISK CARRIER | Supports clutch disk pack |
| 4699200011 | RING GEAR | Outer gear for planetary reduction |
| 4699300152 | TOOTHED DISC | Engages clutch pack for gear selection |
| 4699300153 | RING GEAR | Secondary ring gear for dual-planet sets |
| 4699300154 | RING | Retaining ring for axial positioning |
| 4699300128 | PLANETARY GEAR | Individual planet gear for load sharing |
