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Checkball position of Toyota/Aisin automatic transmission

Automobiles

WHERE EXACTLY SHOULD AISIN TRANSMISSION CHECK BALL BE FIXED?

During valve body removal in Aisin transmissions, the check ball could easily fall off and where it falls from is sometimes a challenge to technicians. The picture attached serves as a sample since the check ball position looks identical in many Aisin transmissions.

Securing the check ball and the check ball spring in place before putting the valve body in place can be challenging too.

FOLLOW BELOW STEPS TO PUT THE CHECK BALL AND SPRING IN PLACE EASILY:

  • Wipe the position where the check ball and spring should stay off with a clean dry cloth. This will remove oil that can prevent the petroleum jelly from sticking with the transmission casing
  • Use petroleum jelly to hold the check ball in place before putting the valve body.

Then gently put the valve body in place and secure it with its screws.

Care should be taken not to mix screws of different dimensions. Some screws are longer than others.

If the check ball is not secured in the correct position, the transmission will not function well.


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