The Volvo 8157766 Isolator Key – The Safety Standard

Need to kill the power on a Volvo rig? The 8157766 Master Disconnect Key is the essential tool for battery isolation across the Volvo Construction Equipment range. Unlike standard flat keys, this heavy-duty, notched cylindrical key is designed to lock into Volvo's high-amp battery disconnect switches. Whether you're a fitter, an operator, or a site safety officer, this "Volvo Bone" is a non-negotiable part of your kit.

Why You Need This (The Site Compliance Essential)

• Volvo Specialist Fit: Specifically engineered for Volvo’s heavy-duty rotary isolation switches—ensuring a clean break of electrical contact.
• Mine Site Ready: Meets Australian site requirements for positive battery isolation during maintenance or overnight parking.
• Heavy Duty Construction: Made from high-strength, corrosion-resistant alloy to handle the torque required for large-scale electrical switches.

Compatible Equipment

The 8157766 isolator key is the standard fit for almost all heavy Volvo machinery, including:

• Articulated Haulers (Moxy): A25D/E/F, A30D/E/F, A35D/E/F, A40D/E/F and the newer G-series.
• Wheel Loaders: L60E/F/G, L70E/F/G, L90E/F/G, L110E/F/G up to the L350 heavy loaders.
• Excavators: Fits the master disconnect switches on most EC and ECR series crawler and wheeled excavators.
• Graders & Rollers: Compatible with various Volvo (formerly Champion) motor graders.

Technical Specs

• Part Number: 8157766 / 1083019 / 14371499 / 20516054
• Design: Cylindrical notched barrel ("Peg" style).
• Material: Heavy-duty Zinc Alloy.
• Application: Battery Master Disconnect / Isolator Switch.

Pro Tip: These keys often live in the isolator switch outside the cab. Because they aren't on a standard keychain, they are the #1 most lost item on a Volvo site. Grab a 5-pack to keep your fleet compliant!