Lower Countershaft Cover and Inertia Brake

Special Instructions

None

Special Tools

  • Inertia Disc Assembly Tool (RR1093TR)

Component Identification

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1. Inertia Brake Cover

2. Inertia Brake Piston

3. Steel Discs (x7)

4. Friction Discs (x5)

5. O-ring - Front

6. Wear Guides (x2)

7. Inertia Brake Housing

8. O-ring - Rear

Disassemble the Inertia Brake

  1. Remove the clutch pack from the Inertia Brake Housing.

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  2. Remove the 2 wear guides from the Inertia Brake Housing.

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  3. Remove O-ring from the front of the Inertia Brake Housing.

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  4. Remove O-ring from the rear of the Inertia Brake Housing.

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  5. Remove O-ring from rear of Inertia Brake Housing that pin's the Countershaft Bearing.

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Assemble the Inertia Brake

  1. Insert the O-ring into the groove on the rear of the Inertia Brake Housing until fully seated.

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  2. Insert the O-ring into the inner grove on the rear of the inertia Brake Housing that Pin's the counter shaft Bearing.

    _Graphics/_Raster/TRSM0960_InertiaBrake_0545.png
  3. Insert the O-ring into the groove on the front of the Inertia Brake Housing until fully seated.

    _Graphics/_Raster/TRSM0960_InertiaBrake_0543.png
  4. Install the 2 Wear Guides in the Inertia Brake Housing.

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  5. Install the inertia brake clutch pack in the order shown below:

    • 1 Steel Disc
    • 1 Friction Disc
    • 1 Steel Disc
    • 1 Friction Disc
    • 1 Steel Disc
    • 1 Friction Disc
    • 1 Steel Disc
    • 1 Friction Disc
    • 1 Steel Disc
    • 1 Friction Disc
    • 1 Steel Disc
    • 1 Steel Disc

    Note: Steel Discs align with Wear Guides. Friction Discs spline to the lower countershaft.

    _Graphics/_Raster/TRSM0960_InertiaBrake_0547.png_Graphics/_Raster/TRSM0960_InertiaBrake_0549.png
  6. Place all Friction Discs so alignment holes line up when stacking Steel Disc and Friction Disc.

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  7. Insert the smallest diameter pin on Inertia Disc Assembly tool (RR1093TR) through all of the Friction disc alignment holes in the Inertia Brake Housing.

    Note: See Lower Countershaft Cover and Inertia Brake Service Procedure for installation of assembly onto Lower Countershaft splines.

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