ZF 0730.108.451 WASHER | OEM Genuine Part

Overview

The ZF 0730.108.451 WASHER is a precision-engineered OEM genuine component designed to maintain critical axial clearances within heavy-duty construction machinery transmissions. This hardened steel washer sits between rotating gear assemblies and the transmission housing, acting as a load-bearing surface that prevents metal-on-metal contact. Specifically utilized in ZF’s modular transmission architecture, the SKU 0730.108.451 ensures proper preload distribution when paired with adjacent drivetrain components. Its primary function is to absorb thrust loads generated during gear engagement, directly influencing the longevity of the entire gear train. For optimal assembly integrity, this washer must be installed alongside the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING to maintain correct end-play specifications.

Symptoms of Failure

• Transmission oil seepage at the differential housing interface: A worn 0730.108.451 washer allows excessive axial movement, breaking the seal between the 5838300626: DIFFERENTIAL HOUSING and the output shaft, leading to visible oil drips under the machine.
• Intermittent gear slipping under load: When the washer thickness degrades, the 2093209023: DIFFERENTIAL loses its preload, causing momentary power loss during excavation or heavy lifting cycles.
• Metallic grinding noise during directional shifts: A collapsed washer permits gear clash between the bevel gear set and the housing, producing a distinct high-pitched grinding sound when transitioning from forward to reverse.
• Increased backlash in the driveline: Operators may notice a delayed engagement “clunk” as the differential gears shift out of tolerance due to insufficient washer support.

Technical Specifications

Parameter	Value
Part Number	0730.108.451
Material	Case-hardened alloy steel (DIN 1.7131)
Outer Diameter	85.0 mm
Inner Diameter	65.5 mm
Thickness	2.50 mm
Weight	0.045 kg
Surface Hardness	58-62 HRC
OEM Reference	ZF 0730.108.451

Compatibility

This genuine ZF washer is engineered for the following transmission families used in construction machinery such as wheel loaders, graders, and telehandlers:

• ZF WG180 series (WG180, WG180C, WG180D)
• ZF WG200 series (WG200, WG200C, WG200D)
• ZF WG310 series (WG310, WG310C)
• ZF Ergopower 3-speed and 4-speed variants

Always verify the part number 0730.108.451 against your transmission’s parts manual before installation. This washer is commonly replaced during differential rebuilds alongside the 5838109012: DIFFERENTIAL and the 0750117075: TAPER ROLLER BEARING.

Related Components

Part Number	Name	Function
5838109012	DIFFERENTIAL	Distributes torque between drive wheels
0750117075	TAPER ROLLER BEARING	Supports radial and axial loads on differential shaft
2093209023	DIFFERENTIAL	Secondary differential unit for planetary axles
5838300626	DIFFERENTIAL HOUSING	Encloses and supports differential gears
0631329088	SPRING PIN	Secures shift fork to shift rail
5838300811	THRUST WASHER	Controls axial clearance in differential assembly
5838300721	AXLE BEVEL GEAR	Transfers power from differential to axle shafts
5838300633	AXLE	Connects differential to wheel hub
5838300753	THRUST WASHER	Reduces friction between planetary gears
5838300818	THRUST WASHER	Adjusts end-play in output shaft assembly

Frequently Asked Questions

Q: Can I reuse the 0730.108.451 washer during a transmission rebuild?
A: No. This is a single-use crush washer that deforms during initial torque application. Always replace it with a new OEM genuine part to guarantee correct preload and prevent oil leaks.

Q: How do I know if my ZF WG200 needs this specific washer?
A: Check the differential housing clearance using a dial indicator. If axial play exceeds 0.15 mm, the 0730.108.451 washer is likely worn and must be replaced along with the 5838300811: THRUST WASHER to restore factory tolerances.

Q: Is this washer compatible with aftermarket differentials?
A: The 0730.108.451 is dimensionally matched to ZF OEM differentials such as the 5838109012. Aftermarket units may have different thickness requirements; always verify with your parts catalog.