What are the reasons for the difficult gear shifting in Fast Small 8-speed transmission?
2 Answers
The reasons for the difficult gear shifting in Fast Small 8-speed transmission are generally caused by hydraulic resistance (too fast operation), external interference (such as resistance caused by additional components), uneven force application, damaged gear shift cable, or gear shift mechanism failure. Here is some information about Fast: 1. Introduction: Fast, the full name is Shaanxi Fast Auto Drive Group Company Limited. 2. Composition: It was restructured from the Shaanxi Automobile Gear Factory and is a large specialized production base mainly producing heavy-duty vehicle transmissions, transfer cases, power take-offs, and various automotive gears and their forged and cast parts. 3. Content: It owns more than 10 controlling and shareholding companies, including Shaanxi Fast Gear Co., Ltd., Xi'an Fast Auto Drive Co., Ltd., Baoji Fast Gear Co., Ltd., Baoji Fast Casting Co., Ltd., Xi'an Fast Power Take-off Co., Ltd., and Fast Distribution Company in the United States.
I've been experiencing difficulty shifting gears with this transmission while driving my truck, and the most common cause is incomplete clutch disengagement. After prolonged truck use, the clutch pedal may become too loose or worn, preventing full power disconnection and causing gear misalignment, making shifting naturally harder. Another issue is synchronizer wear—the small 8-speed transmission's synchronizer ensures smooth gear engagement, and if worn or inadequately lubricated, shifting becomes jerky. I've also noticed that when transmission oil thickens or deteriorates, it thins at higher temperatures, affecting shift feel, especially during long hauls or hot weather. External factors like excessive vehicle load or improper shift timing can worsen the problem. Remember to check for loose shift linkage and promptly visit a certified repair shop to adjust the clutch or replace the synchronizer. Otherwise, persistent shifting difficulties not only damage components but may also lead to driving accidents—safety first.
