GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Vivant 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - ZF 4HP 16 🢒 Brake F, Slotted Nut Installation

Tools Required

    • DT 46474 (DW260-060) Brake F Cup Spring Compressor
    • DT 46479 (DW260-110) Brake F Disc Clearance Measuring Bar

    Caution: Refer to Safety Glasses Caution in the Preface section.


    Object Number: 1256030 Size: SH
  1. Install piston F and the bearing plate with the spur gear.

    2. Object Number: 1256026 Size: SH
  2. Install the cup spring.

    3. Object Number: 1256024 Size: SH
  3. Install the brake F split stop-ring.
  4. Install the brake F inner disc carrier.

    5. Object Number: 1256023 Size: SH
  5. Install the disc set.
  6. Install the side shaft. Refer to Side Shaft Installation .

Measuring Installation Space F

    Object Number: 1256031 Size: SH
  1. Using a DT 46479  (1), measure from the transaxle housing sealing surfaces to the piston's disc support surface at 2 opposing points, M1, M2.
  2. Average the measurement values M1, M2 = BF.

    3. Calculation

    • BF is (M1+M2)/2
    • M1 = 18.6 mm (0.73 in)
    • M2 = 18.8 mm (0.74 in)
    • BF = 18.7 mm (0.735 in)

Determining Adjusting Disc F
  1. Calculate the test dimension PF (PF = BF-MF).

    2. BF = installation space

    MF = disc set thickness assume 14.50  (0.57 in)

    EXAMPLE

    BF = 18.70 mm (0.735 in)

    MF = 14.50 mm (0571 in)

    PF = 4.2 mm (0.164 in)

  2. Find the disc set's thickness. Refer to Transmission General Specifications .

    3. PF is 4.20 mm (0.164 in) so, the disc set's thickness is 3.0 mm (0.12 in).

  3. Replace clutch B's setting disc 3.0 mm (0.12 in).