Blade Tilt Repair on a D11T Bulldozer: The Complete Process

🔧The blade tilt mechanism on a D11T bulldozer allows for left-to-right tilting of the blade for better maneuverability.

🔪The barrel of the blade tilt cylinder must be rehoned to eliminate imperfections before the rebarrel process.

🔩The rebarrel process involves removing the old barrel, machining a new barrel, welding it in place, and honing it to the correct dimensions.

🛠️Proper alignment of the barrel and the head flange is crucial for the success of the rebarrel process.

🔨Great care must be taken to ensure the welds are of high quality and the surface finish of the barrel is smooth.

Why is it necessary to rehoned the barrel?

—Rehoning the barrel helps eliminate imperfections and ensures a smooth and accurate surface for the rebarrel process.

What is the purpose of the head flange?

—The head flange is used to connect the barrel to the head of the blade tilt cylinder.

Why is alignment important in the rebarrel process?

—Proper alignment ensures the barrel is installed correctly and functions smoothly without any issues.

What type of welding process is used in the rebarrel process?

—The rebarrel process involves welding using dual shield wire with argon and CO2 gas mixture.

Why is honing necessary after welding the barrel?

—Honing helps achieve the final dimensions and surface finish required for smooth operation of the blade tilt mechanism.

00:08Introduction to the blade tilt repair job on a D11T bulldozer.

00:30The blade tilt mechanism allows for left-to-right tilting of the blade for better maneuverability.

01:58Identification of an imperfection in the barrel of the blade tilt cylinder.

16:29Machining and welding the new barrel to replace the old one.

35:58Honing the barrel to achieve the final dimensions and surface finish.

36:43Testing the barrel shrinkage in the heat-affected zone after welding.

46:43Final steps of the rebarrel process and completion of the job.