Overview
The ZF 4699.041.026 GK26LD is a precision-engineered OEM genuine component designed for the clutch housing assembly within heavy-duty ZF construction machinery transmissions. This part serves as a critical structural interface, housing the clutch pack and supporting the input shaft alignment. The SKU 4699.041.026 is specifically machined to maintain exacting tolerances, ensuring that hydraulic pressure is correctly routed and that rotating elements remain concentric under high torque loads. As a genuine ZF part, it guarantees a direct fit and long service life in demanding environments like excavators and wheel loaders.
Symptoms of Failure
- Hydraulic fluid seepage from the bell housing: When the 4699.041.026 housing develops stress cracks or its mating surface warps, you will notice oil weeping from the joint between the transmission and engine. This often appears as a slow drip after the machine has been parked.
- Intermittent gear engagement hesitation: A worn or distorted housing can misalign the clutch pack, leading to delayed or rough shifting. Operators may report a “soft” pedal feel or a lag when moving from forward to reverse.
- Metallic debris in the transmission oil pan: If the housing’s bearing bore wears out, it allows shaft wobble, which grinds metal particles into the oil. This symptom typically accompanies a whining noise during acceleration.
- Vibration at the driveline during low-speed operation: A compromised housing loses its ability to dampen torsional vibration, causing a noticeable shudder through the chassis when maneuvering in tight spaces.
Technical Specifications
| Parameter | Value |
|---|---|
| OEM Part Number | 4699.041.026 |
| Material | High-strength cast iron (GGG-40) |
| Weight | 8.2 kg (18.1 lbs) |
| Overall Length | 245 mm |
| Mounting Bolt Pattern | 6-hole, 180 mm PCD |
| Surface Finish | Phosphate coated for corrosion resistance |
| Operating Temperature Range | -40°C to +120°C |
| OEM Reference | ZF GK26LD |
Compatibility
This genuine ZF 4699.041.026 GK26LD housing is engineered for use in the following ZF transmission models commonly found in construction machinery: WG180, WG200, WG211, and WG250 series. It is also compatible with select ZF 4WG-200 and ZF 6WG-250 power shift transmissions. Always verify the casting number on your existing housing before ordering.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4699101166 | HOUSING | Main transmission housing, encloses gear train |
| 4699301223 | HOUSING | Rear housing for output shaft support |
| 0636302022 | SCREW PLUG | Seals hydraulic passages in the housing |
| 0501319149 | SCREW PLUG | Magnetic drain plug for debris collection |
| 0634801038 | SEALING RING | Prevents oil leaks at housing joints |
| 0730365819 | TYPE PLATE | Identification plate for transmission model |
| 0501323165 | SHAFT SEAL | Seals input shaft against fluid loss |
| 4699301222 | COVER | Access cover for clutch adjustment |
| 0634303996 | O-RING | Hydraulic seal for pressure circuits |
| 0630513060 | SNAP RING | Retains bearing in housing bore |
