Overview
The ZF 4642.054.033 4 WG 150 Powershift Transmission Assembly is a complete, factory-grade replacement unit engineered for heavy-duty off-highway machinery. This fully assembled transmission serves as the core power transfer module in articulated dump trucks, wheel loaders, and graders, converting engine torque into controlled traction across four forward and reverse gears. As a complete unit, it integrates the torque converter, planetary gear sets, and hydraulic control system into a single drop-in assembly. The SKU 4642.054.033 specifically identifies the 4-speed variant of the WG 150 series, designed for machines requiring precise shuttle shifting and high torque capacity at low speeds. This assembly eliminates the need for partial rebuilds, offering a direct replacement for worn or failed units in demanding construction and mining environments.
Symptoms of Failure
When the ZF 4642.054.033 assembly begins to degrade, operators will notice distinct performance issues that indicate internal wear. Watch for these specific failure modes:
- Delayed or harsh directional shifts – A pronounced lag when switching from forward to reverse, often accompanied by a metallic clunk, signals worn clutch packs or degraded valve body seals within the unit.
- Torque converter shudder under load – A vibration or chattering sensation during low-speed, high-torque operations (e.g., loading or climbing) points to failing stator bearings or contaminated hydraulic fluid in the converter section.
- External oil seepage from the main housing – Visible fluid trails around the bell housing or output flange indicate degraded gaskets or cracked casing, leading to gradual pressure loss and overheating.
- Intermittent gear slippage in 3rd or 4th range – A sudden loss of power during sustained travel, with engine RPM rising but ground speed dropping, suggests worn planetary gear teeth or failed sealing rings in the clutch drum.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 4642.054.033 |
| Assembly Type | Complete Powershift Transmission |
| Series | WG 150 (4-speed variant) |
| Overall Length (approx.) | 720 mm (28.3 in) |
| Dry Weight (approx.) | 385 kg (849 lbs) |
| Housing Material | High-strength cast iron (GGG-40) |
| Torque Converter Diameter | 380 mm (15.0 in) |
| Max Input Torque | 1,500 Nm (1,106 lb-ft) |
| OEM Reference | ZF 4642.054.033 (OEM direct) |
Compatibility
This 4 WG 150 assembly is specifically engineered for the ZF WG 150 transmission family. It is a direct fit for machines originally equipped with the following ZF models:
- ZF WG 150 – All 4-speed variants used in articulated dump trucks (e.g., Volvo A25, A30 series).
- ZF WG 180 – Cross-compatible with certain 180-series applications where the bell housing pattern matches (verify input flange dimensions).
- ZF WG 200 – Limited compatibility with older WG 200 units that share the same 4-speed planetary layout and torque converter size.
- ZF WG 120 – Not directly interchangeable; the 4642.054.033 is physically larger and has higher torque capacity than the WG 120 series.
Note: Always cross-reference the original equipment manufacturer (OEM) part number and machine serial number before installation. This assembly replaces only the complete transmission unit; external components such as the driveline flange and cooler lines must be inspected separately.
Authorized ZF Distributor
We are a certified supplier of genuine ZF components.
