Overview
The ZF 0501.298.791 REPAIR KIT is a critical OEM genuine service component designed to restore sealing integrity and operational precision within ZF heavy-duty transmissions used in construction machinery. This kit, identified by SKU 0501.298.791, contains all necessary gaskets, seals, and wear elements required for a complete overhaul of the clutch piston or valve body assembly. It sits directly within the hydraulic control unit, ensuring that internal pressure is maintained for smooth gear engagement. When performing a rebuild, this kit is often paired with a new 4699101108: HOUSING to guarantee a perfect mating surface, and the 0501329881: HOUSING COVER must be inspected for cracks during installation.
Symptoms of Failure
When the ZF 0501.298.791 REPAIR KIT components degrade, operators will notice distinct performance issues. Look for these specific failure symptoms:
- External oil leaks at the transmission housing joint: Worn seals within the kit allow hydraulic fluid to escape, often pooling under the bell housing.
- Delayed or harsh gear engagement: Loss of internal pressure causes a noticeable lag when shifting from neutral to drive or reverse.
- Erratic clutch slip under load: The transmission may momentarily lose power during heavy excavation or lifting operations.
- Contaminated hydraulic fluid with metal particles: Internal seal degradation introduces debris into the system, accelerating wear on adjacent components.
Technical Specifications
| Specification | Detail |
|---|---|
| Part Number | 0501.298.791 |
| Material Composition | Nitrile rubber (NBR) seals, steel-reinforced gaskets |
| Weight | 0.45 kg (1.0 lb) |
| Dimensions (L x W x H) | 180 mm x 120 mm x 30 mm |
| OEM Reference | ZF 0501.298.791 (Genuine) |
| Operating Temperature Range | -40°C to +120°C |
| Included Components | Seals, O-rings, gaskets, snap rings |
Compatibility
This repair kit is engineered for ZF transmissions commonly deployed in construction machinery, including wheel loaders, excavators, and telehandlers. Based on its design and part number structure, it is compatible with the following ZF transmission models: WG180, WG200, WG211, and WG310. It is also suitable for select 4WG-200 and 6WG-200 series units. During installation, always verify that the 0630513065: SNAP RING is correctly seated to prevent axial movement, and replace the 0634306309: O-RING to ensure a leak-free seal on the cover plate.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101108 | HOUSING | Encloses the transmission gear set and provides mounting points |
| 0501329881 | HOUSING COVER | Seals the housing and supports the input shaft bearing |
| 0630513065 | SNAP RING | Secures bearings and gears in their axial positions |
| 0634306309 | O-RING | Provides a static seal between mating housing surfaces |
| 0637885612 | BREATHER | Equalizes internal pressure and prevents moisture ingress |
| 0769100082 | TYPE PLATE | Identifies transmission model and serial number |
| 4699001152 | GK10LD | Gear kit for low-speed planetary reduction |
| 4699102172 | INPUT | Input shaft assembly transferring engine torque |
| 4699103057 | OUTPUT | Output flange connecting to the driveline |
| 4699105091 | TURNTABLE BEARING | Supports rotational load in swing drive assemblies |
