How to shift gears in Dongfeng Tianlong 14-speed transmission?
4 Answers
Starting in second gear low speed, move the left switch downward. After the vehicle starts moving, move the splitter switch upward and depress the clutch to engage high second gear. When upshifting, move the splitter switch downward, and so on. Below is an introduction to related content: 1. Transmission: The DT14 series 14-speed transmission is the first heavy-duty transmission launched by Dongfeng Motor Commercial Vehicle Technology Center under the integrated design concept of engine, transmission, and axle. It is the first achievement after the cooperation between Dongfeng and Volvo. The DT14 series transmission adopts Volvo's 14-speed manual transmission technology, featuring full synchronizer shifting, single-H control top cover, and front/rear auxiliary box pneumatic shifting, making operation simple with clear gear positions. 2. Dongfeng Tianlong Voyage Edition: The first new product launched after Dongfeng Group and Volvo Group established a strategic alliance to form Dongfeng Commercial Vehicle Co., Ltd. In terms of braking safety, it adopts a dual-cylinder air compressor with high braking pressure of nearly 10bar (industry standard is around 8bar), and uses an oil-water separator and air desiccant protection system to extend the desiccant's lifespan.
I've been driving a Dongfeng Tianlong truck with a 14-speed transmission for several years. The key to shifting gears is understanding its dual-H pattern: it's divided into two gear groups, high and low, each with seven gear ratios. When operating, start by engaging the low gear group, typically using gears 1 to 7; once you reach the appropriate speed, press the clutch to shift into neutral, then push the high-low range switch to switch to the high gear group, and continue shifting into gears 8 to 14. Make sure to fully depress the clutch and release it smoothly, keeping the RPM between 1800-2000 for the smoothest operation. Don’t forget to regularly check the transmission oil—if shifting feels rough or there’s loud gear grinding, it could indicate worn synchronizers or insufficient oil, so take it to a repair shop immediately for adjustment. For safety, maintain stability when shifting at high speeds, avoid reckless maneuvers on slopes, and as a beginner, practice simulated operations before hitting the road for long-distance driving.
As a truck owner who frequently transports goods at construction sites, I find the 14-speed gear shifting on the Dongfeng Tianlong quite practical. Basic steps: After ignition, press the clutch to engage 1st gear for starting, then gradually release the clutch while applying throttle; once the speed reaches around 20 mph and the RPM increases, shift up to 2nd and 3rd gears. When the speed reaches about 50 mph, press the clutch to shift into neutral, push the high-low switch to the high range, and continue shifting from 8th to 14th gears for highway driving. The key is to press the clutch promptly, execute each gear shift quickly and smoothly, and minimize pauses. In traffic congestion, you can skip gears, but avoid skipping intermediate gears to prevent engine shuddering. I recommend beginners first practice the shifting sequence in an open area to get familiar with the clutch feel before actual driving, as lack of experience can easily lead to clutch plate burning. During maintenance, check if the oil pressure is normal.
Shifting gears in the Dongfeng Tianlong 14-speed is straightforward: Depress the clutch, start from 1st gear, and upshift when the RPM exceeds 2,000. After reaching medium speed, shift to neutral, toggle the high/low range switch to the high range, then continue shifting into higher gears. The key is to practice synchronized operations to avoid prolonged clutch depression or abrupt release. Regular maintenance is essential, as dirty oil can cause rough shifting.
