LEMON Manuals: Even more car manuals for everyone
Home >> Pontiac >> 2006 >> Vibe Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Automatic Transmission - Mu4 - Overhaul) >> Repair Instructions >> Underdrive Brake Assembly Installation

Underdrive Brake Assembly Installation

WARNING: This page is about a different variant/trim than selected.

Tools Required

IMPORTANT: When installing new clutch discs in the 1st-reverse brake, the underdrive brake, the underdrive clutch, the intermediate brake, the forward clutch or the direct clutch assemblies, the new clutch discs MUST be soaked in Dexron®-III Automatic Transmission Fluid GM P/N 12346143 or equivalent, two hours prior to installation. This causes the clutch material on the discs to permeate with fluid which will aid in ease of assembly and prevent clutch overheating on first time engagement.
    Fig 1: Seal Rings & Underdrive Clutch Drum Support
    GM165237Courtesy of GENERAL MOTORS CORP.
  1. Install the 2 new seal rings onto the underdrive clutch drum support (2).
  2. Apply J 36850  in order to the two new underdrive clutch drum support seal rings (3).
  3. Apply J 36850  in order to the two new underdrive brake piston seals.
    4. Fig 2: Aligning Underdrive Brake Piston With Cup Facing Upwards
    GM165238Courtesy of GENERAL MOTORS CORP.
  4. Install the underdrive brake piston (1) into the transaxle case with the cup side facing upwards.
    5. Fig 3: Identifying Underdrive Brake Piston Return Spring
    GM165716Courtesy of GENERAL MOTORS CORP.
  5. Install the underdrive brake piston return spring (1) into the transaxle case.
    6. Fig 4: View Of Underdrive Brake Flange, Plates & Discs
    GM165721Courtesy of GENERAL MOTORS CORP.
  6. Install the underdrive brake flange (2), three plates (3) and three discs (1) into the transaxle case in the following order:
    • Plate
    • Disc
    • Plate
    • Disc
    • Plate
    • Disc
    • Flange
    7. Fig 5: Aligning Inner Teeth Of Underdrive Brake Discs
    GM165724Courtesy of GENERAL MOTORS CORP.
  7. Align the inner teeth of the underdrive brake discs (2).
  8. Install the J 23327  with the J 37282  into the transaxle case and compress the underdrive brake piston return spring until the underdrive brake piston return spring snap ring can be installed. See Special Tools .
  9. Install the underdrive brake snap ring into the transaxle case.
  10. Remove the J 37282  and the J 23327  from the transaxle case. See Special Tools .
    11. Fig 6: Blowing Air In Underdrive Brake Apply Passage
    GM164578Courtesy of GENERAL MOTORS CORP.
  11. Measure the underdrive brake assembly (1) using a J 7872  . See Special Tools . Apply 392-785 kPa (57-114 psi) of compressed air into the underdrive brake apply passage (2).
    • Verify that the underdrive brake assembly clearance falls within 1.07-2.05 mm (0.0421-0.0807 in).
    • If the underdrive brake assembly clearance does not fall within specification, inspect the underdrive brake assembly for excessive wear.
scientia non olet · About LEMON Manuals