Publish Time: 2022-02-23 Origin: Site
10) Procedure 10: Installation of half axle and sun gear
Operation Note:
① Insert half axle into sliding mesh sleeve of inter-wheel differential. Do not install it in the
end. Before assembling, inspect whether there is any bump with half axle and sun gear as
well as repair it.
② Half axle may be divided into left and right ones. Single spline is for right half axle, dual
spline is for left half axle. The length of SHW half axle is 25mm longer than that of STR half axle.
Procedure 10: Installation of half axle and sun gear
11) Procedure 11: Installation of final drive
Operation Note:
① The tightening torque of nut is 96 ～ 78Nm. Glue smeared on the surface shall be
continuous without any break. Clear excess sealants around bowl plug.
② Insert left and right half axle from two ends of axle housing into spline holes of
inter-wheel differential gear to the end.
Procedure 11: Installation of final drive
12) Procedure 12: Installation of wheel end cover; riveting nameplate.
Operation Note:
①Clean any matching surface of end cover and wheel reducer housing, smear
oil-resistant silicone sealant. Glue strip shall be continuous without any break.
② Use bolts to twist end cover tightly. Bolt torque shall be 41~51Nm.
③ Rivet and fasten nameplate at designated position. The depth of rivet hole shall be 4~4.5mm.
Procedure 12: Installation of wheel end cover; riveting nameplate.
13) Procedure 13: Installation of tandem shaft, bearing block assembly and flange
assembly
Operation Note:
① Smear lubricating grease at the lip of bearing block preinstalled with seal. The twisting
torque of flange nut shall be 750~950Nm.
② Install cotter pin to lock effectively.
Procedure 13: Installation of tandem shaft, bearing block assembly and flange assembly
14) Procedure 14: Assembly commissioning
Operation Note:
① Tightening torque of wheel oil filling and discharging screw plug shall be 20~35Nm.
In commissioning process, the temperature of axle housing, wheel side and bearing block
housing of driving bevel gear shall not be 70℃ more than ambient temperature. There
shall not be any leakage at anywhere of assembly.
③ Replace commissioning oil one time every 1000 vehicles.
④ Technical specifications of axle assembly inspected in test shall include as followings.
1. Brake; 2. Differential (inter-wheel and inter-axle); 3. Differential lock (inter-wheel and
inter-axle); 4. Reduction ratio; 5. Whether there is any leakage; 6. Moving parts shall
rotate flexibly.
Procedure 14: Assembly commissioning
15) Installation of bracket
Operation Note:
① Tightening torque of spring slide bolt shall be 450~600Nm.
Tightening torque of air chamber bracket bolt (four bolts at four corners) shall be
450~600Nm. That of two middle bolts shall be 450-540 Nm.
Procedure 15 Installation of bracket
The above includes assembly processes and key attention points of STR and SHW
middle and rear axles. As the maximum amount of heavy duty automobile in China, axles
are also very diverse in their changes. Under basic structure and transfer mode are same,
users may determine which kind the maintained axle is to avoid selecting mistake parts
depending on different tread, different loads and different suspension modes.
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