TORQUE CONVERTER CLUTCH AND DRIVE PLATE INSPECTION

PROCEDURE

1. INSPECT TORQUE CONVERTER CLUTCH ASSEMBLY

   
   

   1. Inspect the one-way clutch.

      
      
      1. 

         *1	Free
         *2	Lock

         Press on the spline of the stator with a finger and rotate it. Check that it rotates smoothly when turned clockwise and locks when turned counterclockwise.

         If necessary, clean the converter clutch and recheck the one-way clutch.

         Replace the converter clutch if the one-way clutch still fails the check.

   2. 

      Text in Illustration

      *1	Sample showing maximum allowable amount of powder in ATF

      Determine the condition of the torque converter clutch assembly.

      
      

      1. If the inspection result of the torque converter clutch assembly satisfies the following conditions, replace the torque converter clutch assembly.

         Malfunction:

         
         

         • A metallic sound is emitted from the torque converter clutch assembly during the stall test or when the shift lever is moved to N.

         • The one-way clutch is free or locks in both directions.

         • The amount of powder in the ATF is more than the sample shown in the illustration (see the sample).

         Tech Tips

         The sample shows approximately 0.025 liters (0.026 US qts, 0.022 Imp. qts) of ATF that is taken out from the removed torque converter clutch.

   3. Replace the ATF in the torque converter clutch.

      
      

      1. If the ATF is discolored and/or has a foul odor, stir the ATF in the torque converter clutch and drain it.

   4. 

      Clean and check the oil cooler and oil pipe line.

      
      

      1. If the torque converter clutch is inspected or the ATF is replaced, clean the oil cooler and oil pipe line.

         Tech Tips

         
         

         • Apply compressed air 196 kPa (2.0 kgf/ cm², 28 psi) into the inlet hose.

         • If a large amount of powder is found in the ATF, add new ATF using a bucket pump and clean the oil cooler and oil pipe line again.

      2. If the ATF is cloudy, inspect the oil cooler (radiator).

   5. 

      *1	CORRECT
      *2	INCORRECT
      *3	Bottom is damaged

      Prevent deformation of the torque converter clutch and damage to the oil pump gear.

      
      

      1. When there is any damage to the end of the bolt for the torque converter clutch and to the bottom of the bolt hole, replace the bolt and the torque converter clutch.

      2. Make sure all of the bolts are the same length.

      3. Bolts with washers must be used.

2. INSPECT DRIVE PLATE

   
   

   1. Check the drive plate for damage.

   2. 

      Text in Illustration

      *1	Measurement Point

      Set up a dial indicator and measure the runout of the 6 portions around the torque converter clutch contact surfaces.

      Maximum runout
      0.30 mm (0.0118 in.)

      If the runout is more than the maximum, or the drive plate is damaged, replace the drive plate.

      If installing a new drive plate, confirm that the spacers are oriented properly before tightening the bolts Click here.