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The Wrench

Stories and articles by The Wrench on CDLcrew.

Diesel Mechanic Shop Blog · September 23, 2026

Mechanics have a funny relationship with heat

Mechanics have a funny relationship with heat. Sometimes it’s your best friend — heat up a stubborn nut and it comes loose. But when the engine starts overheating, heat quickly becomes the enemy.

Diesel Mechanic Shop Blog · September 22, 2026

We removed the right spindle for repair

We removed the right spindle for repair. The wheel hub rides on this spindle with the bearings and seal installed inside. The problem was play in the kingpin, which allowed the steering knuckle to move more than it should.

Diesel Mechanic Shop Blog · September 20, 2026

Big job in the shop today

Big job in the shop today. We pulled this DT-15 engine out of the truck for repairs. When an engine this size has to come out, you know it’s not going to be a quick job. 🔧