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The Repair Manual of SINOTRUK HOWO HC16 Drive Axle 7

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The Repair Manual of SINOTRUK HOWO HC16 Drive Axle 7

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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.

驱动桥装配图 29 驱动桥装配图 30

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.

驱动桥装配图 31

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.

驱动桥装配图 32

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.

驱动桥装配图 33

驱动桥装配图 34

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.

驱动桥装配图 35

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.

驱动桥装配图 36

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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