

The Gears switch cover composite member is a comprehensive assembly that integrates the shift mechanism, cover, and all associated control components for the HOWO A7 8X4 transmission. This composite member houses the shift shafts, self‑locking devices, sensors, and sealing elements that ensure precise gear selection and reliable operation. The Gears switch cover composite member is engineered to provide smooth, positive shifts while preventing oil leaks and protecting internal parts from contamination.
At howo Parts, we supply a complete Gears switch cover composite member that includes every necessary subcomponent: Cover assembly, Sheath, Sheath SF2 25x28x20, LOCTITE glue, Plug, Hex bolt, Spring washer, Self locking spring, Spring block, Roller rod, Self lock shaft, Driving rod, Gear shaft assembly, Shift shaft, Spring, Base ring, Retainer, Fan shape self locking block, End plate assembly, Air plug, Oil seal, Sensor drive ring, Elastic round rod, I shape Hex nut, Wave spring washer, Swing arm, Dust cover, End plate gasket, Support level, Support axle, Rod, Locking fork, Locate sleeve, and Glue. Each element of this Gears switch cover composite member is precision‑made to original specifications.
This composite member simplifies overhaul by providing a matched set of components that eliminate guesswork. With correct installation and regular maintenance, the Gears switch cover composite member delivers consistent shift quality, reduced play, and long service life. Trust our Gears switch cover composite member to keep your HOWO A7 8X4 shifting smoothly for millions of kilometres.
Cover assembly is the main housing that encloses the shift mechanism and provides mounting points for all control components. It is a fundamental part of the Gears switch cover composite member.
Sheath is a plain bushing that supports shift shafts and reduces friction. It ensures smooth linear movement within the composite member.
This is a composite bushing with a self‑lubricating lining, providing low‑friction support for rotating or sliding elements in the Gears switch cover composite member.
LOCTITE glue is a thread‑locking compound used to secure fasteners against vibration. It is applied to critical bolts within the composite member.
Plug is a sealing plug that closes unused openings, preventing oil leaks and ingress of dirt.
Hex bolt is a standard threaded fastener used to secure the cover and other components. It provides reliable clamping force.
Spring washer prevents bolt loosening due to vibration, maintaining joint integrity in the composite member.
Self locking spring applies pressure to the shift detent mechanism, ensuring that the selected gear stays engaged.
Spring block is a retainer that holds the self‑locking spring in position, ensuring consistent detent force.
Roller rod is a cylindrical pin that acts as a pivot or guide within the shift mechanism.
Self lock shaft is the pin that carries the self‑locking mechanism, providing detent action for gear positions.
Driving rod transmits motion from the shift lever to the internal shift shafts, enabling gear selection.
Gear shaft assembly comprises the main shift shaft and associated springs, providing the core shifting function of the composite member.
Shift shaft is the primary rod that moves the shift forks to engage gears. It is a critical part of the Gears switch cover composite member.
Spring provides centering force for the shift shaft, returning it to neutral when no gear is selected.
Base ring is a spacer that supports the shift shaft springs, maintaining correct preload.
Retainer is a snap ring that secures components on shafts, preventing axial displacement.
This block provides a positive detent for gear positions, giving the driver tactile feedback during shifts.
End plate assembly seals the end of the cover, housing the shift shaft and oil seals. It is a key sealing component.
Air plug (breather) equalises internal pressure, preventing oil leaks while keeping contaminants out.
Oil seal prevents lubricant leakage along the shift shaft, protecting the environment and ensuring proper lubrication.
Sensor drive ring rotates with the shift shaft, providing position feedback to the transmission control unit.
Elastic round rod is a spring pin used for secure fastening in applications requiring vibration resistance.
I shape Hex nut is a standard nut used with bolts for reliable clamping in the composite member.
Wave spring washer provides axial preload, maintaining tension in assembled components and reducing play.
Swing arm translates shift cable motion into shaft rotation, enabling remote gear selection.
Dust cover protects the shift shaft entry point from dirt and moisture, preserving seal life.
End plate gasket seals the end plate to the cover, preventing oil leakage.
Support level is a mounting bracket that provides additional rigidity for the shift mechanism.
Support axle is a pivot pin that allows the shift linkage to move freely.
Rod is a connecting pin used in the shift linkage to transfer motion.
Locking fork engages with the shift shaft to prevent simultaneous selection of two gears.
Locate sleeve is a guide bushing that ensures precise alignment of shift shafts.
Glue (thread-locking compound) is applied to fasteners for secure, vibration-proof connections.
| Part NO. | Description |
|---|---|
| AZ2203210030 | Cover assembly |
| WG2222210038 | Cover assembly |
| WG2229210001 | Sheath |
| WG2229002520 | Sheath SF2 25x28x20 |
| AZ9007970001 | LOCTITE glue |
| Q72220 | Plug |
| WG2229210070 | Cover assembly |
| Q150B1085 | Hex bolt |
| Q40310 | Spring washer |
| WG2229210033 | Self locking spring |
| WG2229210011 | Spring block |
| AZ9003343178 | Roller rod |
| WG2212210005 | Self lock shaft |
| WG2229210012 | Driving rod |
| AZ2203210025 | Gear shaft assembly |
| WG2212210007 | Shift shaft |
| WG2229210021 | Spring |
| AZ2229210007 | Base ring |
| Q43120 | Retainer |
| WG2229210008 | Fan shape self locking block |
| AZ2203210008 | End plate assembly |
| Q901 | Air plug |
| WG9003072502 | Oil seal |
| WG9003072501 | Oil seal |
| WG2229002520 | Sheath SF2 25x28x20 |
| WG2229210034 | End plate assembly |
| WG2229210014 | Sensor drive ring |
| Q5280632 | Elastic round rod |
| Q340B1013F2 | I shape Hex nut |
| Q41810 | Wave spring washer |
| WG2214210004 | Swing arm |
| Q150B104OTF2 | Hex bolt |
| WG2229210026 | Dust cover |
| Q150B0825 | Hex bolt |
| Q43008 | Spring washer |
| WG2229210017 | End plate gasket |
| WG2229210041 | Support level |
| WG2229210003 | Support axle |
| Q43112 | Retainer |
| WG2229210040 | Gear shaft assembly |
| WG2214210103 | Shift shaft |
| WG2229210009 | Rod |
| WG2214210010 | Locking fork |
| Q150B0820 | Hex bolt |
| Q43008 | Spring washer |
| WG2229210034 | End plate |
| WG2229210037 | End plate gasket |
| WG2229210029 | Retainer |
| AZ9007970242 | Glue |
| WG2229210036 | Locate sleeve |
Every component in our Gears switch cover composite member is manufactured to the same specifications as the original equipment, ensuring a perfect fit and reliable performance. We use premium materials for extended durability.
The self‑locking spring, detent block, and shift shafts are designed to provide crisp, positive gear engagement. Our Gears switch cover composite member delivers factory‑smooth shifting.
We supply the Gears switch cover composite member as a comprehensive set, including all seals, springs, and fasteners. This simplifies ordering and reduces installation errors.
Our inventory is stocked to meet urgent needs, and our technical team is available to assist with installation. Choose our Gears switch cover composite member for reliability worldwide.
The Gears switch cover composite member controls all shifting functions, from neutral to the highest gear. Its internal springs, detents, and shafts ensure that each gear engages fully and remains locked under load. Any wear in this composite member can cause missed shifts or gear pop‑out.
Oil seals, gaskets, and dust covers protect the shift mechanism from dirt and moisture. The Gears switch cover composite member is designed to maintain a clean internal environment, extending the life of bearings and sliding surfaces.
When installing the Gears switch cover composite member, use new gaskets and apply LOCTITE glue to critical fasteners. Ensure that all springs are correctly seated and that the shift shaft moves freely without binding.
We recommend inspecting the Gears switch cover composite member every 100,000 km. Check for oil leaks, worn detent springs, and excessive play in the shift shaft. Replace any damaged seals or springs promptly.
This composite member is specifically designed for the HOWO A7 8X4 transmission, fitting all variants with the standard shift cover layout. All mounting holes and shaft diameters match the original parts.
Each component of our Gears switch cover composite member is inspected for hardness, dimensional accuracy, and surface finish. We back our product with a comprehensive warranty.
We maintain a large stock of all parts, allowing same‑day dispatch. Custom kits for bulk orders are available, with volume discounts for fleet customers.
Choosing our Gears switch cover composite member reduces downtime and repair costs. The durable construction ensures consistent shift quality and extended service intervals, saving you money over the life of the vehicle.
Our online catalog provides comprehensive access to genuine SINOTRUK parts for all major vehicle lines — including HOWO, Sitrak, Steyr, and Yellow River series trucks. You can browse detailed specifications, original part numbers, and exploded-view diagrams for every assembly. Whether you are performing routine maintenance or planning a major overhaul, the catalog helps you quickly identify the correct components for your vehicle. When you become a SINOTRUK customer, we offer complimentary full‑access catalog services, ensuring you always have the latest product data and interchangeability information at your fingertips to support efficient fleet management and accurate parts ordering.