ZF 0730.105.044 WASHER | OEM Genuine Part

Overview

The ZF 0730.105.044 WASHER is a precision-engineered, OEM genuine component designed to maintain critical axial clearances within ZF heavy-duty transmission assemblies. This hardened steel washer functions as a load-spreading interface between rotating shafts and stationary housings, preventing metal-on-metal contact that can lead to premature wear. Commonly found in construction machinery drivelines, the SKU 0730.105.044 is installed directly behind the input shaft bearing cluster, where it absorbs thrust loads during high-torque operations. Its exacting dimensional tolerances ensure consistent oil film thickness, which is vital for cooling and lubrication in demanding environments.

Symptoms of Failure

• Transmission oil leaks near the bell housing: A worn 0730.105.044 washer allows excessive shaft end-play, which distorts the main seal lip, causing fluid seepage around the front pump area.
• Gear engagement hesitation or slipping: When this washer loses its original thickness, clutch pack clearances shift, resulting in delayed shifts or momentary power loss under load.
• Metallic grinding noise during deceleration: As the washer surface degrades, hardened particles contaminate the oil, producing a distinct grinding sound when the transmission coasts.
• Elevated operating temperatures: Increased friction from a collapsed washer generates excess heat, often triggering thermal warning lights on construction equipment dashboards.

Technical Specifications

Parameter	Value
Part Number	0730.105.044
Material	Hardened carbon steel (C45E, 40-45 HRC)
Outer Diameter	44.0 mm
Inner Diameter	28.5 mm
Thickness	2.5 mm
Weight	0.018 kg
OEM Reference	ZF 0730.105.044

Compatibility

This washer is a direct fit for ZF WG180, WG200, and WG210 series powershift transmissions commonly used in wheel loaders, excavators, and telehandlers. It also appears in select ZF Ecolife and Ecomat bus transmission rebuild kits. Always verify the part number against your transmission’s serial plate before installation.

Installation Context

During a full transmission overhaul, the 0730.105.044 WASHER is seated against the 4108101076: HOUSING and the 4108201217: HOUSING to establish correct bearing preload. The 4108301304: BEARING COVER retains the assembly, while a fresh 4108306173: GASKET ensures a leak-free seal. Technicians should also inspect the 0730102947: SHIM for proper clearance adjustment during reassembly.

Related Components

Part Number	Name	Function
4108101076	HOUSING	Encloses the clutch pack and supports shaft alignment
4108201217	HOUSING	Intermediate housing for torque converter section
4108301304	BEARING COVER	Seals and retains the input shaft bearing
4108306173	GASKET	Prevents oil leakage between housing faces
0730365280	TYPE PLATE	Identification plate for transmission model
0631311009	GROOVED STUD	Locating pin for housing alignment
4108301345	INPUT SHAFT	Transfers engine torque into the transmission
0735330931	BALL BEARING	Supports rotating shaft with minimal friction
0630532160	RETAINING RING	Secures bearing in its housing bore
0730102947	SHIM	Adjusts axial play for precise gear engagement

Frequently Asked Questions

Q: Can I reuse the 0730.105.044 washer during a rebuild?
No. This washer is a single-use component because it compresses and work-hardens under load. Reusing it will result in incorrect bearing preload and rapid failure of adjacent seals.

Q: How do I verify the correct thickness of this washer?
Measure the old washer with a micrometer and compare it to the 2.5 mm specification. If it measures below 2.45 mm, replacement is mandatory. Always stack the new washer with the 0730102947: SHIM to achieve the factory end-play tolerance of 0.05–0.15 mm.

Q: Does this washer fit ZF 4WG-200 transmissions?
Yes. The 0730.105.044 is used in ZF 4WG-200, 5WG-200, and 6WG-200 models. Always cross-reference your transmission serial number with the parts catalog to confirm compatibility.