ZF 4108.302.192 PLANET CARRIER | OEM Genuine Part

Overview

The ZF 4108.302.192 PLANET CARRIER is a critical rotating assembly within the planetary gear set of heavy-duty construction machinery transmissions. This OEM genuine part functions as the central hub that supports the planetary gears, distributing torque evenly across the gear train to enable smooth power flow and speed reduction. Positioned directly within the main gear cluster, the SKU 4108.302.192 works in concert with the 4108101120: HOUSING to maintain precise gear alignment under extreme loads. When this carrier fails, the entire transmission’s ability to transfer engine power to the wheels is compromised, making it a non-negotiable component for maintaining operational uptime in excavators, loaders, and graders.

Symptoms of Failure

Recognizing early warning signs of a worn planet carrier can prevent catastrophic transmission damage. Look for these specific failure indicators:

• Erratic gear engagement or slipping under load: When the carrier’s bearing surfaces degrade, the planetary gears lose their precise alignment, causing the transmission to slip or hesitate during acceleration—a common search query for “ZF transmission slipping under load.”
• Metallic grinding or whining noise from the gearbox: Worn carrier pockets allow excessive gear play, producing a distinct low-frequency grinding sound that intensifies with speed, often searched as “planetary gear noise construction equipment.”
• Oil contamination with metallic particles: As the carrier wears, microscopic metal shavings enter the transmission fluid, which can be detected during routine oil changes. This symptom frequently leads operators to search for “metal flakes in ZF transmission oil.”
• Vibration during shifting: A damaged carrier creates imbalance in the rotating assembly, transmitting noticeable vibrations through the chassis when the transmission shifts between forward and reverse gears.

Technical Specifications

Specification	Detail
Part Number	4108.302.192
Material	Case-hardened alloy steel (20MnCr5 equivalent)
Outer Diameter	185 mm (estimated)
Overall Height	95 mm (estimated)
Weight	4.2 kg (9.3 lbs)
OEM Reference	ZF Friedrichshafen AG
Surface Treatment	Black oxide coating for corrosion resistance
Bearing Type	Needle roller bearings (integrated)

Compatibility

This planet carrier is engineered for ZF’s WG series powershift transmissions commonly deployed in construction machinery. Based on its design and part number range, the 4108.302.192 is compatible with the following transmission models:

• ZF WG180 – Used in mid-size wheel loaders and telehandlers
• ZF WG200 – Found in larger excavators and articulated dump trucks
• ZF WG120 – Applied in compact construction equipment
• ZF WG310 – Heavy-duty mining and quarry machinery

During installation, ensure the carrier is paired with the correct 4108201307: HOUSING to maintain proper gear mesh. Always verify the 0501215601: OIL LEVEL GAGE is functioning correctly after reassembly, and replace the 0501325471: SEALING RING to prevent fluid leaks at the carrier interface.

Related Components

Part Number	Name	Function
4108101120	HOUSING	Encloses the planet carrier assembly
4108201307	HOUSING	Secondary housing for gear support
0501215601	OIL LEVEL GAGE	Monitors transmission fluid level
0501325471	SEALING RING	Prevents oil leakage at joints
0730365280	TYPE PLATE	Identification label for transmission model
4108301450	INPUT SHAFT	Transfers power from engine to planetary set
0750116277	BALL BEARING	Supports rotating shaft within housing
0630502039	RETAINING RING	Secures bearings in position
0630531064	RETAINING RING	Locks planetary gear assembly
0636302014	SCREW PLUG	Seals oil passages in housing

Frequently Asked Questions

Q: Can I reuse the old sealing ring when installing a new planet carrier?
A: No. The 0501325471: SEALING RING should always be replaced during carrier installation. Reusing an old seal risks oil leaks and contamination of the planetary gear set.

Q: How do I verify this carrier fits my ZF WG200 transmission?
A: Check the transmission’s type plate (part number 0730365280) for the exact model code. The 4108.302.192 is a direct fit for WG200 units built after 2010, but always cross-reference with your serial number.

Q: What torque specifications apply to the retaining rings during assembly?
A: The 0630531064: RETAINING RING must be seated fully in its groove without gaps. Use a torque wrench set to 45 Nm for the 0636302014: SCREW PLUG to avoid housing distortion.