Triumilynn 88800014 Flywheel Turning Tool for Volvo D11/D13/D16 and Mack Engines

Flex-plate teeth help this flywheel turning tool engage the ring gear, making it easier to rotate a crankshaft or flywheel into position for engine timing and overhead work. It’s designed for Volvo D11, D13 and D16 engines, as well as Mack MP7, MP8 and MP10 engines, giving technicians a dedicated way to turn the engine during service procedures.

For jobs that call for accurate engine positioning, it offers a practical alternative to turning the engine manually: engage the tool in the flywheel housing and turn it with a ratchet or breaker bar.

Getting the most from it

Remove the flywheel cover plug, then insert the tool into the flywheel housing until it engages the ring gear. Attach a 1/2-inch square drive ratchet or breaker bar and turn to rotate the flywheel or crankshaft. This setup is useful when positioning the engine for timing procedures, overhead adjustments or injector replacement, where controlled rotation helps bring the engine to the required position.

The flex-plate teeth and load-bearing collar are designed to let the tool rotate in the housing as the engine is barred over. Rather than relying on manual turning, the tool provides a point of engagement at the flywheel housing and works with a commonly used square-drive turning tool.

Benefits

A dedicated barring tool makes engine positioning a more direct part of maintenance work. Use it to turn the crankshaft or flywheel during timing procedures, or to rotate the engine while carrying out overhead adjustments and injector replacement. The same tool supports these tasks across the listed Volvo and Mack engine families, so its role is clear in a shop workflow that includes compatible trucks.

Its solid-steel construction is finished with a black powder coat intended to resist wear and corrosion. The flex-plate teeth are designed for engagement with the ring gear, while the collar supports rotation within the housing. Together, these features suit the tool’s purpose: helping the technician turn the engine to a service position using a ratchet or breaker bar.

Key specifications

• Type: Crankshaft and flywheel turning tool
• Compatibility: Volvo D11, D13 and D16 engines, Mack MP7, MP8 and MP10 engines
• Material: Solid steel
• Finish: Black powder coat
• Drive: 1/2-inch square drive ratchet or breaker bar
• Dimensions: 9.4 x 5.31 x 3.71 cm
• Weight: 381 g
• Reference: 88800014

Questions before you buy

Which engines is this tool designed for? It is listed for Volvo D11, D13 and D16 engines, and Mack MP7, MP8 and MP10 engines. Match the engine in the truck to the listed engine family before selecting the tool.

What maintenance jobs can it help with? It turns the crankshaft or flywheel to position the engine for timing procedures, overhead adjustments and injector replacement.

How is the tool turned? Insert it into the flywheel housing until it engages the ring gear, then attach a 1/2-inch square drive ratchet or breaker bar and turn the engine as needed.

When it makes sense

Choose this tool when engine service calls for turning a compatible Volvo or Mack engine at the flywheel housing to reach a working position. Its steel construction, ring-gear engagement and square-drive operation make it a purpose-built fit for timing and related maintenance tasks, especially when a direct tool-based method is preferable to turning the engine manually.