Maintenance - Section 4 08/07 OM4016 Page 4-24 Lubrication and Service PARKING BRAKE PARKING BRAKE PAD Inspection NOTE: The brake disc can be machined and reused as long as it is not less than 20 mm (0.79 in) thick after machining. PARKING BRAKE ADJUSTMENT FIGURE 4-16. PARKING BRAKE ADJUSTMENT 1. Capscrew 2. Spring Housing 3. Caliper Testing 1. Stop the machine on level ground and apply the parking brake. 2. Raise the air pressure to 8.3 kg/cm 2 (118 psi). 3. Place the transmission shift lever in the D (F2) position. 4. Raise the engine speed gradually and measure the engine speed when the machine starts to move. The minimum engine speed is 1,720 RPM. NOTE:
When the machine starts to move, release the accelerator pedal, and depress the brake pedal and return transmission shift lever to N at the same time. Adjusting 1. Turn capscrew (1, Figure 4-16) clockwise and bring both pads (1, Figure 4-17) into contact with disc (2). 2. Push in capscrew retainer (3, Figure 4-18) of slack adjuster (1) until the capscrew can turn, then turn capscrew (3) clockwise. 3. Turn capscrew (1, Figure 4-16) back from this position counterclockwise 360° ± 15° and mea- sure clearance of caliper pad with feeler gauge (1, Figure 4-19). FIGURE 4-17. PARKING BRAKE ADJUSTMENT 1. Pads 2.
Brake Disc PARKING BRAKE INSPECTION ITEM NEW LIMIT REMEDY Disc Face Runout 0.4 mm (0.016 in) 0.8 mm (0.032 in) Replace Disc Thickness 25 mm (0.99 in) 20 mm (0.79 in) Replace Pad (Includes Plate Thickness) 21.5 mm (0.847 in) 11.5 mm (0.45 in) Replace