Overview
The ZF 2094.159.008 LASTSCHALTGR is a critical load shift gear component engineered for heavy-duty construction machinery transmissions. This OEM genuine part sits within the upper gear train assembly, directly interfacing with the main shaft to facilitate precise power distribution under load. As a load-shifting element, it manages torque transfer between gear stages, ensuring smooth engagement during demanding operations. The SKU 2094.159.008 is specifically designed to withstand high cyclic stresses in excavators and wheel loaders, where it works in tandem with the 2094104412 MAIN SHAFT and the 2094304054 MAIN SHAFT to maintain driveline integrity.
Symptoms of Failure
- Delayed or harsh gear engagement under load: When the 2094.159.008 wears, operators often report a noticeable lag or clunking sensation when shifting between forward and reverse, particularly in construction machinery working on inclines.
- Intermittent power loss during acceleration: A failing load shift gear can cause the transmission to momentarily slip out of gear, leading to a sudden drop in wheel torque that compromises productivity on job sites.
- Metallic grinding noise from the transmission housing: Worn gear teeth on the LASTSCHALTGR produce a distinct high-pitched whine or grinding sound, especially audible at low engine RPMs when the gear is under maximum load.
- Contaminated transmission fluid with metallic particles: Advanced wear releases fine metal shavings into the oil, which can be detected during routine fluid analysis and often accompanies damage to the 2094106010 SHIFT SYSTEM.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 2094.159.008 |
| OEM Reference | ZF LASTSCHALTGR (Load Shift Gear) |
| Material | Case-hardened alloy steel (20MnCr5) |
| Outer Diameter | 142 mm (estimated) |
| Inner Bore Diameter | 55 mm (estimated) |
| Width / Thickness | 38 mm (estimated) |
| Weight | 1.85 kg (estimated) |
| Tooth Count | 37 (estimated) |
| Heat Treatment | Carburized & tempered to HRC 58-62 |
Compatibility
This OEM genuine load shift gear is designed for integration into ZF’s heavy-duty powershift transmission series commonly deployed in construction machinery. Based on its part number structure and physical configuration, the 2094.159.008 is compatible with the following ZF transmission models: WG180, WG200, WG210, and select variants of the WG160 series. It is frequently replaced alongside the 2094206001 GEARSHIFT SHAFT to restore proper shift synchronization in wheel loaders and dozers.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 2094104412 | MAIN SHAFT | Transfers rotational torque from the gear cluster to the output flange |
| 2094304054 | MAIN SHAFT | Secondary shaft supporting load distribution in multi-speed configurations |
| 2094106010 | SHIFT SYSTEM | Hydraulic-mechanical assembly that actuates gear engagement |
| 2094206001 | GEARSHIFT SHAFT | Transmits shift fork motion to the sliding gear |
| 2094306053 | GEARSHIFT SHAFT | Alternate shaft variant for synchronized gear sets |
| 0630513070 | SNAP RING | Secures gear position axially on the shaft |
| 2094306019 | WASHER | Thrust washer reducing axial play between rotating components |
| 0732040444 | COMPRESSION SPRING | Provides preload to shift detent mechanism |
| 0732040728 | COMPRESSION SPRING | Higher-rate spring for heavy-load shift return |
| 2093206001 | BUSH | Wear-resistant sleeve supporting shaft rotation |
Frequently Asked Questions
Q: How do I know if the ZF 2094.159.008 is the correct replacement for my transmission?
Verify your transmission model number (e.g., WG180 or WG200) and inspect the existing gear’s tooth profile. This part is an OEM direct fit for ZF powershift units; cross-reference your old part’s stamped number to confirm.
Q: Can I replace the load shift gear without removing the entire transmission?
In most construction machinery applications, partial disassembly of the transmission side cover is sufficient to access the 2094.159.008. However, we recommend replacing the 0630513070 SNAP RING and 2094306019 WASHER simultaneously to ensure proper axial clearance.
Q: What causes premature wear on the LASTSCHALTGR gear?
Contaminated hydraulic fluid, incorrect shift timing, or a worn 2093206001 BUSH can accelerate tooth face degradation. Always inspect the 0732040444 COMPRESSION SPRING for fatigue when servicing this component.
📞 Need this part? Contact our ZF specialists:
Email: info@partszf.com |
Phone: +86 158 2286 3467 |
Request a Quote →
