TORQUE CONVERTER AND DRIVE PLATE INSPECTION

PROCEDURE

1. INSPECT TORQUE CONVERTER ASSEMBLY

   
   

   1. Inspect the one-way clutch.

      
      

      1. 

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

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

         Replace the torque converter assembly if the one-way clutch still fails the inspection.

         Text in Illustration

         	Difficult
         	Smooth

   2. 

      Text in Illustration

      *a	Sample showing maximum allowable amount of powder in ATF
      *b	Full Scale

      Inspect the torque converter assembly.

      If any of the following problems are present, replace the torque converter assembly.

      
      

      Malfunction:

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

      • The one-way clutch turns smoothly or turns with difficulty in both directions.

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

      Tech Tips

      The sample shows approximately 0.025 liters (0.026 US qts., 0.022 Imp. qts.) of ATF in a Petri dish, which has been taken from the removed torque converter assembly.

   3. Replace the ATF in the torque converter assembly.

      Tech Tips

      If the ATF is discolored or has a foul odor, stir the ATF in the torque converter assembly and drain it before replacing the ATF.

   4. 

      Clean and check the oil cooler and oil pipe line.

      Tech Tips

      
      

      • If the torque converter assembly is inspected or the ATF is replaced, it is necessary to clean the oil cooler and oil pipe line.

      • Apply compressed air of 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.

      • If the ATF is cloudy, inspect the oil cooler.

   5. 

      Text in Illustration

      *a	Correct
      *b	Incorrect
      *c	Bottom is damaged

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

      Note

      Make sure that all of the bolts are the same length and that the specified bolts are used.

      Tech Tips

      If there is any damage to the tip of a bolt for the torque converter assembly or to the bottom of a bolt hole, replace the bolt and torque converter assembly.

2. INSPECT DRIVE PLATE

   
   

   1. 

      Check the drive plate for damage.

      Text in Illustration

      Measurement Point

   2. Set up a dial indicator and measure the runout at the 6 areas on the drive plate surface that contact the torque converter assembly.

      Maximum runout
      0.30 mm (0.0118 in.)

      Tech Tips

      
      

      • 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.