Tech Guide: DD5 Crankshaft Locking & High-Torque Service
Breaking crankshaft bolts or installing a flywheel on a Detroit DD5? Learn how to use the ATCW936589014000 to keep your engine stationary and your hands safe.
Why Improvised Methods Fail
We’ve all seen it: a technician using a pry bar in the flywheel teeth to hold the engine. On a high-compression engine like the DD5, the force required to loosen a main bolt can easily snap a tooth or slip, causing injury or expensive rework. The ATCW936589014000 is designed specifically for this engine's geometry, locking into place so you can use your full strength on the breaker bar without worry.
4 Key Times to Use Your Holding Tool
- Crankshaft Bolt Service: Loosening or torquing the main vibration damper bolt requires a 100% stationary crank.
- Flywheel/Flexplate Install: Ensure the crank doesn't spin while you reach your final torque-to-yield specs on flywheel bolts.
- Timing Verification: Use the tool to hold the engine at a specific reference point while checking gear train alignment.
- Engine Teardown: Prevent accidental rotation during piston or rod removal to keep your workspace safe and organized.
TECH TIP:
Before applying full torque, ensure the ATCW936589014000 is fully seated in the holding points. A tool that is only "halfway in" can mar the contact surface when 400+ lb-ft of torque is applied.
Heavy-Duty Service. Professional Results.
Order the DD5 Holding Tool