Universal joint loose fault phenomenon, cause and diagnosis and elimination

Universal joint loose fault phenomenon, cause and diagnosis and elimination

(1) The phenomenon of the looseness of the universal joint

When the car starts or changes the speed suddenly, the transmission shaft makes a "bang" sound; when the car slows down, it makes a "bang, bang" sound.

Universal joint loose fault phenomenon, cause and diagnosis and elimination

(2) Reasons for the looseness of the universal joint

①The flange plate connecting bolts are loose;

②The swimming angle of the main and driven parts of the universal joint is too large;

③The universal joint cross shaft is seriously worn.

(3) Troubleshooting and troubleshooting of loose universal joints

① Lightly tap the connection of each universal joint flange plate with a hammer to check its tightness. If it is too loose, the fault is caused by loose connecting bolts, otherwise continue to check.

② Hold the main and driven parts of the universal joint with both hands to rotate, and check the swimming angle. If the swimming angle is too large, the failure will be caused.