Service Brakes Repair (Dry Brake)
1800 YRM 1247
Figure 10. Inner Grease Seal Installation
1. ADJUSTER LEVER 2. ADJUSTER WHEEL
3. ADJUSTER LINK
Figure 12. Auto Adjuster Assembly NOTE: If the brake shoes were not replaced, loosen the two adjuster wheels equally, approximately 20 teeth.
1. 2. 3. 4. 5.
AXLE SHAFT WHEEL ADJUSTMENT NUT LOCK PLATE WASHER HUB
Figure 11. Wheel Adjustment d. Rotate the hub 3 complete revolutions in both directions. Verify the wheel adjustment nut torque is 28 to 32 N•m (21 to 24 lbf ft) and that the torque stabilizes at that specification.
CAUTION If there is too much clearance, the automatic adjusters will not operate. If the clearance is too small, the automatic adjuster cannot turn the adjuster wheel to increase the clearance, and the adjuster wheel will not turn until the brake shoes wear. If the adjuster wheel does not move for a long operating period, the adjuster link can wear a spot on the adjuster wheel so that it will not turn correctly.
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13. To manually adjust the brakes, it is necessary to turn the adjuster wheels. See Figure 6. a. Remove the two access plugs in the adjustment slots located on the back side of the backing plate. Place an adjuster tool and screwdriver through the slot in the backing plate. See Figure 7. b. Push the adjuster lever away from the adjuster wheel, in the direction indicated in Figure 12 and turn the adjuster wheel until the brake shoe just touches the brake drum. c. Use the adjuster tool to loosen the adjuster wheel approximately 20 teeth. Adjust the brake shoe for the other adjuster wheel using the same method. See Figure 12. d. Install the access plugs after the adjustment is complete. See Figure 7. 14. Install the drive wheels. Remove the lift truck from the blocks. 15. Operate the lift truck in the FORWARD and REVERSE directions. Stop the lift truck 10 times in each direction. This procedure causes the brake shoes to wear a small amount and fit the brake drum better.