Overview
The ZF 2093.159.026 LASTSCHALTGR is a genuine OEM load gear component engineered for heavy-duty construction machinery transmissions. This precision-machined part sits within the planetary gear set of ZF’s powershift transmissions, where it manages torque distribution during load shifts. As a critical element in the drivetrain, the SKU 2093.159.026 ensures smooth engagement under high-stress conditions, directly interfacing with the 5838109012: DIFFERENTIAL to regulate power flow. Its robust construction minimizes wear in the gear train, making it indispensable for excavators, wheel loaders, and graders operating in demanding environments.
Symptoms of Failure
- Delayed or harsh gear engagement: Worn load gears cause hesitation or clunking when shifting under load, often accompanied by grinding noises from the transmission housing.
- Oil leaks near the shift mechanism: Degraded seals on the 2093.159.026 allow hydraulic fluid to escape, leaving puddles under the machine and reducing clutch pressure.
- Intermittent power loss during acceleration: A failing LASTSCHALTGR slips under torque, causing the engine to rev without proportional wheel speed—especially noticeable on inclines.
- Metal debris in transmission fluid: Flaking or chipped gear teeth contaminate the oil, which can be detected during routine filter inspections or magnetic drain plug checks.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number | 2093.159.026 |
| OEM Reference | ZF LASTSCHALTGR (Load Gear) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 2.85 kg (6.28 lbs) |
| Outer Diameter | 142 mm |
| Internal Spline Count | 24 teeth |
| Heat Treatment | Carburized & tempered to HRC 58-62 |
| Surface Finish | Ground & shot-peened |
Compatibility
This genuine load gear is designed for ZF WG series powershift transmissions commonly found in construction machinery. It is compatible with the following models: WG180, WG200, WG211, and WG240. These transmissions are used in brands like Case, New Holland, Liebherr, and Volvo CE. For optimal performance, always pair the 2093.159.026 with a new 0750117075: TAPER ROLLER BEARING and inspect the 2093209023: DIFFERENTIAL for scoring. The 5838300626: DIFFERENTIAL HOUSING should also be checked for cracks during rebuilds.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque between axles |
| 0750117075 | TAPER ROLLER BEARING | Supports gear shaft radial loads |
| 2093209023 | DIFFERENTIAL | Secondary torque split unit |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses gear set, retains lubricant |
| 0631329088 | SPRING PIN | Secures shift fork alignment |
| 5838300811 | THRUST WASHER | Reduces axial play in gear stack |
| 5838300721 | AXLE BEVEL GEAR | Transfers power at right angles |
| 5838300633 | AXLE | Transmits rotational force to wheels |
| 5838300753 | THRUST WASHER | Controls side clearance in differential |
| 5838300818 | THRUST WASHER | Prevents gear-to-housing contact |
Frequently Asked Questions
Q: Can I install the 2093.159.026 without replacing the taper roller bearing?
A: It is strongly advised to replace the 0750117075: TAPER ROLLER BEARING simultaneously. Worn bearings create radial play that accelerates load gear wear, reducing service life by up to 40%.
Q: How do I verify if this load gear fits my WG200 transmission?
A: Check the transmission serial number plate. The 2093.159.026 is a direct replacement for all WG200 variants built after 2005. For earlier models, measure the internal spline diameter—it must be 142 mm.
Q: What torque specification is required for the retaining nut?
A: Use 180 Nm (133 ft-lbs) with thread locker applied. Over-torquing can distort the gear hub, leading to premature failure of the 5838300626: DIFFERENTIAL HOUSING.
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Phone: +86 158 2286 3467 |
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