Overview
The ZF 4642.154.202 POWER TAKE-OFF is a critical OEM genuine component engineered specifically for the WG 150 Series transmission. This unit transfers engine power to auxiliary hydraulic systems, such as pumps for dump trailers, concrete mixers, or refuse trucks. As a direct-fit replacement, the SKU 4642.154.202 ensures precise engagement with the transmission’s internal gear train, maintaining factory torque ratings and reducing parasitic drag. It mounts directly to the transmission housing, where it interfaces with the 4642101109: TRANSMISSION HOUSING and the 4642301205: TRANSMISSION HOUSING to provide a sealed, high-pressure oil path.
Symptoms of Failure
- Hydraulic system pressure loss – When the PTO gear teeth wear, you may notice sluggish operation of auxiliary equipment, such as a crane or auger, due to insufficient power transfer.
- Oil leaks around the PTO mounting flange – A degraded seal or cracked housing allows transmission fluid to weep, often visible as drips under the vehicle near the WG150.
- Grinding or whining noise during engagement – Worn bearings or misaligned gears produce audible metal-on-metal sounds, especially under load, indicating imminent failure.
- Intermittent gear slipping – The PTO may disengage unexpectedly during operation, causing a sudden loss of hydraulic function, which is a safety hazard in heavy-duty applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 4642.154.202 |
| OEM Reference | ZF WG150 Series |
| Material | High-strength alloy steel (gear) + cast aluminum (housing) |
| Weight | Approx. 8.5 kg (18.7 lbs) |
| Dimensions (L x W x H) | 280 mm x 180 mm x 150 mm |
| Torque Capacity | Up to 600 Nm |
| Mounting Flange | SAE B 2-bolt pattern |
| Seal Type | Viton dual-lip oil seal |
Compatibility
This genuine ZF power take-off is designed for the WG 150 Series transmission, but it also fits select variants in the WG180 and WG200 families when used with the correct adapter kit. It is commonly found in ZF Ecomat and Ecolife drivelines for municipal and construction vehicles. For proper installation, ensure the 0730365125: TYPE PLATE matches your transmission’s serial number, and secure the unit using the 0631311009: GROOVED STUD to prevent vibration loosening.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 4642101109 | TRANSMISSION HOUSING | Main structural casing for gear train |
| 4642301205 | TRANSMISSION HOUSING | Secondary housing for PTO mounting |
| 0730365125 | TYPE PLATE | Identification plate for transmission model |
| 0631311009 | GROOVED STUD | Fastener for PTO alignment |
| 4642301168 | SCREEN SHEET | Oil filter mesh for hydraulic circuit |
| 4642301169 | SCREEN SHEET | Fine mesh filter for debris protection |
| 0636100621 | HEXAGON SCREW | Mounting bolt for cover plates |
| 4642301186 | SCREEN SHEET | High-flow filter for heavy oil |
| 4644106300 | SHIFT SYSTEM | Pneumatic or hydraulic shift mechanism |
| 4644306500 | COVER PLATE | Sealing cover for PTO access port |
