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(1) For the preloading of the front bearing No.27305 of the 2nd shaft and that of the differential bearing
No.7210, see Fig.5-2. The preloading of bearing No.27305 requires a frictional torque of
1.2~1.9N*m,Which corresponds to a reading in force on the spring scale of 6.5~9.5 N.
The preloading of bearing No.7210 requires a frictional torque of 0.9~1.4 N*m. When this is
transformed to the 2nd shaft and added to it the preloading torque of bearing No.27305
(1.2~1.9 N*m), the corresponding reading on spring scale should be 7~11 N.
(2) Make sure that the axial play shall be less than 0.1mm.
This can be made by means of changing the number and thickness of the shims.
(3) For the condition of teeth contact, see Fig. 5-3
Fig. 5-3 Ideal condition of teeth contact of
spiral bevel gears when the tractor is
driven forward
(A-Small gear, B-Big gear)
Fig. 5-4 Adjustment of teeth contact condition
for spiral bevel gear
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