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The ZF 12-speed gearbox peripheral parts disassembly involves 11 main tasks, including removing the speed sensor harness, gearbox control device, breather bolt, gear selection and sensor modules, valve body, contact, output shaft speed sensor, odometer sensor, retarder, and PTO. Various tools like torque wrenches, sockets, and special pins are used.

When coupling a trailer, inspect the area, check trailer ID, inspect the kingpin, ensure 5th wheel lock is open, and chock wheels. Reverse carefully, confirm coupling by tug test, inspect lock engagement, raise landing gear, connect lines, and inspect the trailer. To uncouple, park on level ground, lower landing gear, unlock 5th wheel, disconnect lines, deflate suspension, pull forward, check support, then drive off.

Notice: CTT 2025

Commercial drivers must ensure brakes are properly adjusted, with the mark-and-measure method being the most reliable for measuring brake stroke. This involves marking the pushrod, applying the brakes, and measuring the stroke to ensure it doesn’t exceed the chamber’s adjustment limit. Other methods, like measuring free stroke or using parking brakes, are less reliable and may give false readings. Mark-and-measure at full pressure is the best way to ensure proper adjustment.


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When it comes to repairing or rebuilding truck and commercial‑vehicle transmissions, not all pullers are created equal. Heavy‑duty transmissions demand tools engineered for far greater force, durability and precision than those used in ordinary passenger‑car repair. At DNT Tools

Notice: CTT 2025

WHAT SHOULD THE BEST MOTORCYCLE TOOL KIT INCLUDE?

tools zoo:DIY Repairs and Motorcycle Emergencies:Motorcycle Tools for the Road and Home

Electric vehicles struggle to retain value after being sold while traditional models maintain value, according to findings from a recent study

Significant shifts in the composition of light vehicles will have substantial impacts on the automotive aftermarket sector, recent research by Lang Marketing suggested.

In the realm of power tools, a significant shift is underway as electrically powered alternatives steadily gain momentum. This burgeoning trend is poised to reshape the landscape of the power tool industry in the foreseeable future.

Innovative Clutch Tools Revolutionize Automotive Maintenance

Everything is more expensive now, and that includes car repairs. Labor shortages, parts and supply chain disruptions, and inflation have collided, creating a perfect storm of high maintenance costs for car owners. NetCredit, a personal loan and financing company, recently released its findings for the most expensive and least expensive states for car repairs, and the numbers are discouraging but not all that surprising.