Shandong Shengyue Technology Development Co.,Ltd is one of the most professional SINOTRUK HOWO A7 HOWO T5G HOWO T7H HOYUN Truck Gearbox Parts Main Shaft 4th Gear Az2210040402 with Good Discount manufacturers and suppliers in China. Please feel free to buy high quality genuine auto parts at competitive price from our factory.
SINOTRUK HOWO A7 HOWO T5G HOWO T7H HOYUN Truck Gearbox Parts Main Shaft 4th Gear Az2210040402
Compatible with Fast HW19710, HW19710T, HW19712, HW19720 and other series 10-speed/12-speed manual transmissions
Function
1. Power Transmission and Four-Gear Implementation: This gear is fixed to the main shaft and slides with it via an internal spline. When fourth gear is engaged, the synchronizer pushes the sliding sleeve to engage the gear's teeth, transmitting power from the intermediate shaft's fourth gear to the main shaft, achieving a four-gear reduction ratio output suitable for medium-to-high-speed cruising and fuel-efficient operation.
2. Smooth Shifting with Synchronizer: The gear has a synchronizer cone on its side, which rubs against the third and fourth gear synchronizer (AZ2210020502) to synchronize the speed difference, ensuring smooth shifting without grinding or abnormal noise when engaging fourth gear. The constant mesh design reduces impact and improves transmission efficiency.
3. High Torque Resistance and Durable Operation: Under the high torque output of heavy-duty truck engines, this gear withstands enormous shear forces and bending stresses. Precision heat treatment and gear grinding processes ensure uniform tooth contact, low noise, and long service life (over 200,000-500,000 kilometers under normal use without major repairs). 4. Overall stability of auxiliary gearbox: In cooperation with adjacent parts (such as the main shaft third gear AZ2210040403, the main shaft fifth gear, etc.), it maintains the axial/radial positioning stability of the two-shaft assembly and prevents axial movement from causing gear slippage or abnormal noise.
DETAILS
| DESCRIPTION | Main Shaft 4th Gear | PART NUMBER | Az2210040402 |
| WEIGHT |
5KG |
VOLUME |
Outside Diameter 180 mm Pitch Diameter 190 mm Bore 70 mm |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | COUNTRY OF ORIGIN | CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | gearbox |
Repair Recommendations: It is recommended to replace the gearbox during a major overhaul, synchronizer replacement, or if the fourth gear is malfunctioning. Also, inspect the spindle splines, synchronizer, bearings, oil seals, and other related components. After replacement, add new gear oil and conduct a road test to confirm that the fourth gear is functioning correctly.
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