1158686 Torque Wrench | Genuine Volvo Penta Part

🔧 Product Description

A genuine Volvo Penta precision workshop torque wrench designed for controlled tightening from 5 Nm to 50 Nm. The tool uses a 3/8-inch square drive and is specified throughout Volvo Penta workshop procedures for low- and medium-torque fasteners on marine diesel engines. The wrench is selected by the specified tightening torque rather than by one engine serial range. It is documented for the complete Volvo Penta 31, 32, 41, 42, 43, 44 and 300-series engine-body workshop family.

🚤 Compatibility

• Year Range: Approximately 1985-2005 for the documented 31 / 32 / 41 / 42 / 43 / 44 / 300 engine families

⚙️ Key Features

• Genuine Volvo Penta OEM workshop torque wrench
• Calibrated working range: 5-50 Nm
• 3/8-inch square drive
• Suitable for controlled tightening of engine fasteners and service components
• Workshop-manual formatted number: 115 8686-4
• Engine type: Volvo Penta 4-cylinder and 6-cylinder turbocharged marine diesel engines, including mechanically governed and EDC-controlled variants

🔌 Function

A torque wrench applies a controlled, measurable tightening force to threaded fasteners so they reach the exact torque specified in the service procedure. Correct torque prevents both under-tightened joints that can loosen or leak and over-tightened fasteners that can stretch, strip or crack components.

⚠️ Common Signs of Failure

• Readings drift out of calibration, giving torque values that no longer match the setting
• Click or release mechanism fails to break away audibly or is inconsistent between pulls
• Stiff, notchy or seized adjustment collar that will not hold the selected setting
• Play, wear or rounding at the square drive causing sockets to slip off
• Visible damage to the handle, scale or head after a drop or use as a breaker bar

🛠️ Service Notes

• This is the 5-50 Nm wrench with 3/8-inch drive for low- and medium-torque fasteners — for high-load fasteners above that range, the heavier 1159797 (75-400 Nm) is the correct tool, not this one
• Select it by the torque specified in the procedure rather than by engine model, since it covers the whole 31-44 and 300-series engine-body family through one tool

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 115 8686-4 workshop-manual formatted reference

OEM / Related Numbers

• 115 8686-4 related reference
• 1158688 related Volvo Penta 1/2-inch torque wrench, 40-200 Nm

Aftermarket / Verified Equivalents

• HAZET: 6391-50, 5-50 Nm, 9 x 12 mm insert-tool torque wrench; requires a compatible 3/8-inch insert head
• Stahlwille: 730R Quick 5 / 96504005, 6-50 Nm, 3/8-inch professional functional alternative
• Norbar: 15042, 10-50 Nm, 3/8-inch professional functional alternative
• FACOM: J.209A50, 10-50 Nm, 3/8-inch professional functional alternative

📦 Condition

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