The Hatz Governor Gear Wheel (OEM 03798720) is a replacement engine component used within the oil pump and mechanical governor assembly of compatible Hatz diesel engines. The gear wheel transfers rotational drive to the oil pump, forming an important part of the engine's lubrication and governor system and helping ensure the associated components operate correctly.

Manufactured for use within the demanding environment of a compact industrial diesel engine, the gear wheel is designed to withstand continuous rotation, engine vibration and the loads associated with driving the oil pump. Replacing a worn or damaged gear wheel helps maintain reliable oil pump operation and supports consistent lubrication and engine performance.

FUNCTION AND OPERATION

Transfers rotational drive to the engine oil pump
Forms part of the oil pump and mechanical governor assembly
Provides positive gear-driven transmission of engine rotation
Supports continuous operation of the engine lubrication system
Helps maintain reliable oil circulation during engine operation
Designed for continuous operation within the engine

TECHNICAL DETAILS

OEM Part Number: 03798720
Brand: Hatz
Type: Gear wheel / oil pump drive gear
Number of Teeth: 22
Outside Diameter: 53.7 mm
ID: 33 mm
Thickness: 9.5 mm
Function: Oil pump drive
Application: Selected Hatz 1D-series diesel engines

TYPICAL APPLICATIONS

Suitable for compatible Hatz diesel engines, including selected:

1D30
1D31
1D35
1D40
1D41
1D42
1D50
1D60
1D80
1D81
1D90
1D90E
1D90V
A1D40
A1D41
H1D90V

Also suitable for selected construction, compaction, agricultural, generator and industrial equipment fitted with compatible Hatz engines.

Always verify compatibility using the engine model, specification and OEM part number before ordering, as oil pump and governor assemblies can vary between engine versions.

IMPORTANT INFORMATION

The gear wheel operates continuously as part of the engine's lubrication system, so worn or damaged teeth can affect the reliable transmission of drive to the oil pump. Inspect the gear teeth and associated components for wear, damage or abnormal contact marks during engine maintenance.

When replacing the gear wheel, inspect the mating gear, oil pump components and associated retaining components at the same time. Ensure the gear is correctly positioned and securely retained, and that the oil pump assembly is correctly lubricated before returning the engine to service.

Pack quantity	1
OEM Number	03798720
Manufacturer	Hatz

Available in category:

Tool > Engine > Hatz Engines & Parts > Hatz Internal Engine Parts

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