D6D TRACTOR POWER TRAIN – Adjustment Procedures For The Brakes

Adjustment Of The Brakes

1. Install support assemblies (6), booster housings, and the levers that are fastened to the housings.

2. Turn socket (7) clockwise until the brake band is tight on the brake drum. Then turn socket (7) counterclockwise 11/2 turns or nine clicks (the noise heard when a detent is felt).

3. Install the remainder of the brake linkage.

4. Make an adjustment to the length of rod (5) so distance (C) between the center lines of the rod ends is … 558.0 ± 3.0 mm (21.97 ± .12 in)

Tighten the nuts on the rod ends to a torque of … 100 ± 14 N·m (75 ± 10 lb ft)

5. Loosen nut (9).

6. Remove the cotter pin and pin that connect rod end (10) to lever (11). Make an adjustment to the length of rod (8) so distance (B) between the front of the right brake pedal and the front of the seat kick plate is … 420 mm (16.5 in)

7. Put rod end (10) in position on lever (11) and install the pin and cotter pin.

8. Tighten nut (9) to a torque of … 100 ± 14 N·m (75 ± 10 lb ft)

9. Do Steps 2 through 9 for the control rods for the left brake. Make sure the left brake pedal is in alignment with the right brake pedal.

10. After adjustment of brakes is done, push on left brake pedal. If distance (D) is not 3.0 ± 3.0 mm (.118 ± 118 in), adjust rod ends of rod (8) for left side the same amount to get distance (D). Tighten nuts (9) on rod for left side to … 100 ± 14 N·m (75 ± 10 lb ft)

Adjustment Of The Parking Brake Lever

1. Put lever (1) in the NOT ENGAGED position.

2. Loosen nut (3).

3. Remove cotter pin and pin that connect rod end (4) to lever (1). Make an adjustment to the length of rod (2) so that distance (A) is … 102.0 ± 3.0 mm (4.02 ± .12 in)

4. Put rod end (4) in position on lever (1) and install pin and the cotter pin. Tighten nut (3) to a torque of … 25 ± 7 N·m (20 ± 5 lb ft)

Adjustment Of The Mechanism Of Brake Engagement

If the mechanism has been assembled with new parts or shims (15) behind plate (18) have been lost, make the adjustment that follows:

1. Install a 9.52 mm (.375 in) diameter rod (13) through the holes in support assembly (6) and bellcrank (12).

2. Hold lever assembly (14) against the back plate of the support assembly (6).

3. Hold lever assemblies (16) and (17) apart to remove movement (slack) in the linkage.

4. Measure distance (E) between lever assembly (17) and plate (18) with a feeler gauge. Distance must be … 0.25 ± 0.13 mm (.010 ± .005 in)

5. Add or remove shims (15) between plate and support assembly to get correct distance (E).

6. Remove the rod from the holes.

7. See “Adjustment of the Brakes” and “Adjustment of the Parking Brake Lever”.

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