Honda PX4B – Automatic Transmission Service Group


Honda PX4B - Automatic Transmission Service Group PDF

INTRODUCTION

  • PX4B – 1990 HONDA ACCORD
  • APX4 – 1991/1992 HONDA ACCORD
  • MPWA – 1991/1992 HONDA ACCORD ONLY
  • MP1A – 1992 HONDA PRELUDE

This manual covers only the Honda models listed above and sold in the U.S. The 1991/1992 Accord may have a APX4 or MPWA. The APX4 is built in the U.S. and the MPWA is built in Japan. The MPWA transaxle covered in this manual is for the Honda Accord only. The Acura Vigor has a transaxle with the same model designation, but is entirely different. This transaxle is transverse mounted, has four forward speeds with 4th gear being overdrive and is equipped with a converter clutch. The MP1A Transaxle Control Unit (TCU) uses a different strategy to allow the Prelude to apply the converter clutch in the D3 position. There are different gear ratios for different vehicle applications. Extra care should be used when interchanging parts and transaxles. This transaxle is designed to have engine braking in M1 and M2. Externally the PX4B, APX4, MPWA and MP1A, are visually very similar. The starter is mounted in the center of the bell housing near the top. Two pairs of solenoids are located on the bell housing to make a total of 4 solenoids. Two transaxle speed sensors are located in the end cover on opposite sides of each other. The vehicle speed sensor is located on top of the power steering speed sensor (hydraulic), above the speedometer gear. To accurately determine the model, check the transaxle identification tag.

INDEX

  • IDENTIFICATION
  • COMPONENT APPLICATION CHART
  • SOLENOID OPERATION CHART
  • ELECTRONIC COMPONENT LOCATION
  • ATSG HONDA BULLETIN INDEX
  • CODES
  • SOLENOID TEST
  • SPEED SENSOR TEST
  • PRESSURE PORT LOCATION
  • PRESSURE SPECIFICATIONS
  • DIAGNOSIS
  • SHIFT SPEED SPECIFICATION
  • STALL SPEED TEST
  • MAINTENANCE
  • DISASSEMBLY / ASSEMBLY
  • VALVE BODY
  • CHECK BALL LOCATIONS
  • SPRAG ROTATION
  • DIFFERENTIAL
  • THROTTLE PRESSURE / CABLE ADJUSTMENT

Language: English
Format: PDF
Pages: 101
Size: 2.81 Mb
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