Sinotruk Howo Upper Cap

The Sinotruk Howo Upper Cover is an essential component of the vehicle’s transmission system. It consists of several parts that work together to ensure smooth gear shifting and optimal performance.
The upper cover includes the following components:
Compressed spring: This spring provides the necessary tension for efficient gear shifting.
Hex nuts: These nuts are used to secure various parts of the upper cover assembly.
Spring washers: These washers help prevent the hex nuts from loosening due to vibrations during vehicle operation.
Hexagonal nuts: Similar to the hex nuts mentioned earlier, these nuts also serve as fasteners for different parts of the upper cover.
Fork fork linkage pin: This pin connects the fork and the linkage mechanism, allowing for the movement and engagement of gears.
Steel ball: Steel balls are used as rollers within the upper cover assembly to aid in smooth gear shifting.
Upper cover: The upper cover itself houses the gears and components necessary for gear selection and shifting.
Studs: These threaded rods secure the upper cover to the gearbox housing.
Five six file guide block: This guide block helps control the movement of gears during gear shifting in the 5th and 6th gear positions.

Reverse fork: The reverse fork is responsible for engaging and disengaging the reverse gear.
Fork shaft: The fork shaft is a long rod that connects the fork and the gear shift mechanism.
Reverse fork fork shaft: This shaft specifically connects the reverse fork to the shift mechanism.
5th 6th fork shaft: Similar to the reverse fork fork shaft, this shaft connects the 5th and 6th gear forks to the shift mechanism.
5th 6th gears fork: This fork is responsible for engaging the 5th and 6th gears.
3rd 4th gears fork: Like the 5th 6th gears fork, this fork engages the 3rd and 4th gears.
1st 2nd gear fork: This fork is responsible for engaging the 1st and 2nd gears.
Elastic cylindrical pins: These pins provide flexibility and assist in gear shifting operations.
Reverse guide block: The reverse guide block helps control the movement of the reverse gear during shifting.
Reverse lock plunger: This plunger locks the reverse gear in place when engaged.
Reverse lock spring: The reverse lock spring provides the necessary tension to hold the reverse lock plunger in place.
Reverse lock plug: This plug is used to cover and secure the reverse lock mechanism.
The Sinotruk Howo Upper Cover is a crucial part of the transmission system, ensuring smooth and efficient gear shifting for the vehicle’s optimal performance.