20886252 Gear | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta precision gear for the engine's specified timing or auxiliary drive position. Its tooth count, tooth form, face width and hub offset are matched to the adjoining gears so torque is transmitted smoothly with the correct speed relationship and backlash.

🚤 Compatibility

Typically suits:

• Volvo Penta TD420VE
• Volvo Penta TAD420VE

• Engine Family: TD, TAD
• Serial Range: SN01070652-

⚙️ Key Features

• Genuine Volvo Penta Drive Gear - part number 20886252
• OEM tooth count and profile
• Correct face width and hub offset
• Machined mounting interface controls runout
• Hardened working surfaces resist pitting
• Designed for the engine's lubricated gear train
• Timing marks and backlash must be set to workshop specification
• Engine type: Application-specific Volvo Penta engine rotating and drive system
• 2 used per assembly

🔌 Function

The gear transfers rotary motion from the driving shaft to its assigned component. The tooth ratio establishes driven speed, while the gear's installed position maintains timing and load distribution across the tooth faces.

⚠️ Common Signs of Failure

• Gear whine, rattle or cyclic knocking
• Pitted, chipped or scuffed teeth
• Excessive backlash or uneven contact pattern
• Fretting or looseness at the hub
• Driven component timing or speed becomes incorrect

🛠️ Service Notes

• Inspect the mating gear as well as the one being renewed; a chipped or worn tooth on the partner will quickly ruin a new gear, so change them as a pair where the wear is shared
• Check the shaft, bush or bearing the gear runs on for wear and scoring before assembly and renew anything that is not to size
• Fit the gear square and press it home rather than driving it with hammer blows, which spread the bore and mark the teeth
• Oil the teeth and bearing surfaces on assembly so the gear is not run up dry on first start
• Where the workshop manual for your engine gives backlash, end float or timing settings for the gear, set and check them to those figures rather than by feel

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20886252 → Supersedes 20476190

OEM / Related Numbers

• 20476190 earlier number superseded by this part

Other-Brand OEM Numbers

• VOE20886252

📦 Condition

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