21086556 Spacer Sleeve | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta precision spacer sleeve used in the optional 225 cm³ engine-driven air-compressor/PTO installation fitted to selected D5 and D7 industrial engines. The sleeve establishes the required installed distance between mounting or rotating components so the compressor gear and support hardware remain correctly aligned.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD560VE
• Volvo Penta TAD561VE
• Volvo Penta TAD765VE
• Volvo Penta TAD764VE
• Volvo Penta TAD763VE
• Volvo Penta TAD762VE
• Volvo Penta TAD761VE

• Engine Family: TAD

⚙️ Key Features

• Precision-length spacer for the optional air-compressor drive assembly
• Maintains compressor/PTO mounting alignment and fastener clamp load
• Hardened, dimensionally stable construction for vibration-loaded service
• Prevents bracket distortion when the mounting fastener is tightened
• Must be installed in the exact arrangement position and orientation
• Engine type: D5/D7-series turbocharged industrial diesel with optional engine-driven air compressor

🔌 Function

Sets the correct mounting distance and supports the fastener load within the compressor drive assembly, protecting the bracket, gear alignment and adjoining housing from distortion.

⚠️ Common Signs of Failure

• Compressor or bracket sits out of alignment
• Uneven mounting gap or bracket distortion
• Fastener repeatedly loosens despite correct torque
• Abnormal compressor-drive gear noise
• Visible fretting or wear on the sleeve ends

🛠️ Service Notes

• A spacer sleeve sets a fixed length in the joint — never leave one out, shorten one, or substitute a stack of washers, or the clamping load and alignment will both be wrong
• Check that the sleeve is square and fully seated in its counterbore or recess before any fastener is tightened
• Discard a sleeve that is crushed, bell-mouthed, scored or corroded; a shortened sleeve lets the joint be over-clamped and the component distorted
• On sleeves in an oil circuit, make sure the bore is clear and that any seal running on the sleeve has a clean, unscored surface to work against
• Tighten the joint to the figure in the workshop manual for your engine, with the sleeve taking the clamping load rather than the component it protects

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 21086626 - compressor lubrication oil pipe
• 21086642 - compressor/PTO support bracket
• 21040143 - 225 cm³ air compressor used in the applicable arrangement
• 21242459 - compressor gasket kit
• 20860834 - associated drive gear

📦 Condition

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