22143650 Hub | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta D8A5-A Timing Idler-Gear Hub, part number 22143650. A genuine hub used to support and locate a timing idler gear in the Volvo Penta D8A5-A marine-generator gear train.

🚤 Compatibility

Typically suits:

• Volvo Penta D8A5-A MH
• Volvo Penta D8A6-A MH
• Volvo Penta D8A5-A MG
• Volvo Penta D8A6-A MG

• Engine Family: D

⚙️ Key Features

• Precision-machined bearing, gear and mounting surfaces
• Factory geometry for the specified engine or drive
• Designed for continuous torque and vibration load
• Requires correct lubrication, alignment and fastener torque
• Matched to the exact ratio, generation and serial range
• Engine type: 7.7L inline six-cylinder common-rail turbocharged marine generator diesel

🔌 Function

Supports or transfers rotating load while preserving the specified timing, bearing alignment, gear relationship or transmission interface.

⚠️ Common Signs of Failure

• Oil leakage caused by cover or shaft misalignment
• Premature bearing, gear or seal failure

🛠️ Service Notes

• Get the hub off with the correct puller rather than levering or hammering it; a hub driven off or on is enough to damage the shaft, the bearing behind it and the hub itself
• Clean and inspect the shaft, keyway or taper and check for scoring, wear steps and fretting; a hub will not run true on a damaged seat and the fault will come straight back
• Inspect and renew the seal that runs on or behind the hub while access is good, and check the sealing surface for a wear groove
• Draw the hub on square, fully home to the position the workshop manual for your engine gives, and tighten the retaining fastener to the manual figure with any specified locking method
• Check the drive belt alignment and run-out after fitting, then run the engine and watch for wobble, noise or a belt tracking off to one side

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 22143650 → Supersedes 21797112

OEM / Related Numbers

• 21797112 earlier number superseded by this part
• 21860076 - idler gear
• 975206 - mounting screws
• 21797099 - gear
• 994304 - locating pin
• 22380056 - companion hub
• 22617794 - retaining plate
• 22475115 - gear
• 21736273 - companion hubs
• 21736275 - companion hubs
• 21860003 - idler gear
• 976042 - O-ring
• 21736279 - plate
• 964106 - gasket
• 21735434 - gear

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging