Overview
The ZF 4656.073.053 3 WG 171 Powershift Transmission Assembly is a complete, fully assembled unit engineered for heavy-duty off-highway machinery. This integral assembly serves as the central power distribution hub within the WG 171 series, managing torque conversion and gear selection for demanding applications such as wheel loaders, graders, and industrial tractors. The SKU 4656.073.053 replaces the need for individual component sourcing, providing a drop-in solution that restores full transmission functionality. This unit integrates directly with the 4656101028 TRANSMISSION HOUSING to ensure structural integrity and precise alignment of internal rotating assemblies.
Symptoms of Failure
- Delayed or harsh gear engagement: When the complete unit wears, operators often experience a noticeable lag or jarring shift between forward and reverse gears, indicating internal clutch pack or seal degradation.
- Transmission fluid leaks at housing seams: A failing assembly frequently causes oil seepage around the mating surfaces of the 4656301066 HOUS.FRONT SECT, leading to low fluid levels and eventual overheating.
- Loss of power under load: Worn internal components result in torque converter slippage, causing the machine to lose pulling power during grading or loading operations.
- Unusual whining or grinding noises: Contaminated fluid or worn bearings within the assembly produce metallic sounds from the transmission bell housing, signaling imminent failure.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number / SKU | 4656.073.053 |
| Assembly Type | Complete Powershift Unit (3 WG 171) |
| Overall Length | 720 mm (estimated) |
| Overall Width | 480 mm (estimated) |
| Overall Height | 510 mm (estimated) |
| Dry Weight | 185 kg (estimated) |
| Housing Material | High-strength cast iron |
| OEM Reference | ZF 3 WG 171 Series |
| Torque Capacity | Up to 1,200 Nm (estimated) |
| Fluid Capacity | 18 liters (estimated) |
Compatibility
This complete assembly is specifically designed for the ZF WG 171 transmission series. It is also compatible with closely related models including the WG 180, WG 200, and WG 150 series when used with the appropriate adapter kits. The unit directly replaces the 4656301037 TUBE and 4656201015 SCREEN SHEET found in earlier revisions, ensuring backward compatibility with most WG 171 applications from 2005 onward. Always verify your transmission model tag before installation.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4656101028 | TRANSMISSION HOUSING | Main structural casing for gear and shaft alignment |
| 4656301066 | HOUS.FRONT SECT | Front section housing for torque converter and pump |
| 4656201015 | SCREEN SHEET | Filter screen for debris protection in oil circuit |
| 4656301037 | TUBE | Hydraulic fluid passage tube for clutch actuation |
| 0634313514 | O-RING | Seal for hydraulic line connections |
| 0636100803 | CAP SCREW | Fastener for housing attachment |
| 4656301042 | HOUSING REAR PART | Rear casing section for output shaft support |
| 0631306816 | CYLINDRICAL PIN | Alignment dowel for precise housing assembly |
| 0636100801 | CAP SCREW | Bolt for securing valve body cover |
| 0636100160 | CAP SCREW | Fastener for oil pan attachment |
Frequently Asked Questions
Q: Can the ZF 4656.073.053 assembly be rebuilt instead of replaced?
A: While individual components like the 4656301042 HOUSING REAR PART can be serviced, the complete unit is often replaced to avoid hidden wear in internal clutch packs and seals that are difficult to inspect.
Q: What is the estimated service life of this complete unit?
A: Under normal operating conditions with proper fluid maintenance, the 3 WG 171 assembly typically lasts 8,000 to 12,000 hours before requiring replacement of seals and the 0634313514 O-RING.
Q: Does this assembly include the necessary cap screws for installation?
A: No, the unit ships without fasteners. You will need to order 0636100803 CAP SCREW and 0636100160 CAP SCREW separately for a complete installation.
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Email: info@partszf.com |
Phone: +86 158 2286 3467 |
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