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A/T - Delay/Harsh Engagement Diagnosis: Overview

BULLETIN NO.: 96-T-38A

ISSUE DATE: July, 1997

GROUP/SEQ. NO.: Transaxle-06

CORPORATION NO.: 6871O3R

SUBJECT:
Service Manual Information for Automatic Transaxle Delay and/or Harsh Engagement into Reverse Diagnosis

Due to the addition of model years, new service information and a new labor operation code, this bulletin supercedes 96-T-38, which should be discarded.

MODELS AFFECTED:
1993-1997 Saturns equipped with MP6/MP7 automatic transaxles











PURPOSE:
When diagnosing a delay and/or harsh engagement into reverse, refer to the following diagnostic flow chart and procedure. The following diagnostic flow chart and procedure is more thorough than the diagnostic flow chart and procedure contained in the appropriate year Automatic Transaxle Service Manuals.

Clutch Damage Check Procedure

1. Place vehicle in Park.

2. Remove end cover according to procedures in the appropriate year automatic transaxle service manual.

3. Rotate the input shaft by hand, turning the 1st clutch housing in both directions.

^ If input shaft turns freely in only one direction, the 1st clutch is binding. Repair 1st clutch according to procedures in the appropriate year automatic transaxle service manual.

^ If input shaft will not turn freely in either direction, 2nd, 3rd or 4th clutch is binding. Refer to procedures in the appropriate year automatic transaxle service manual.

Misplaced or Loose Input Shaft Inner Tube Bushing Check Procedure

1. Remove end cover and 1st clutch according to procedures in the appropriate year automatic trans axle service manual.





2. Obtain a piece of welding rod or straightened coat hanger, and insert into input shaft until the bushing (1) is reached.

3. Measure depth of bushing using welding rod or straightened coat hanger and a ruler. The bushing should be 130.18 +/- 3.18 mm (5-1/8 in. +/- 1/8 in.) from the 1st clutch end of the input shaft. If the bushing is more than 133.35 mm (5-1/4 in.) or less than 127.0 mm (5 in.) deep, the input shaft must be replaced.





IMPORTANT:
Bolt holes may be different depending on year of vehicle. However, the transaxle case pressure ports are identical from year-to-year