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206-00 Freios – informações gerais

Oficina · páginas 163–170

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  1. Índice da seção p. 163
  2. Especificações p. 164
  3. Ajuste da válvula proporcionadora com sensor de carga do freio p. 165
  4. Verificação da oscilação do disco de freio dianteiro p. 166–167
  5. Verificação de vazamento do sistema de freios p. 168
  6. Sangria do sistema de freios p. 169
  7. Sangria do sistema de freios sob pressão p. 170

Página 163 · Índice da seção

Contents

Brake System - General Information 206-00-1 206-00-1 . SECTION 206-00 Brake System - General Information VEHICLE APPLICATION: 2011.50 Ranger CONTENTS SPECIFICATIONS Specifications...................................................................................................................... GENERAL PROCEDURES Brake Load Sensor Proportioning Valve Adjustment..................................... Front Brake Disc Runout Check......................................................................................... Brake System Leak Check................................................................................................. Brake System Bleeding.................................................................................. Brake System Pressure Bleeding................................................................... PAGE 206-00-2 (12 136 0) 206-00-3 206-00-4 206-00-6 (12 141 0) 206-00-7 (12 141 0) 206-00-8

Página 164 · Especificações

Specifications

Brake System - General Information 206-00-2 206-00-2 SPECIFICATIONS BRAKE TECHNICAL DATA ITEM SPECIFICATION Brake fluid type SAE J1703, FMVSS 116 DOT-3 Brake pedal height 214–219 mm {8.43–8.62 in} Standard pedal play 3.0–8.0 mm {0.12–0.31 in} Standard pedal-to-floor 105 mm {4.14 in} or clearance PRUH Power brake unit fluid At 0 kPa {0 mmHg, 0 pressure when pedal inHg}: 237 kPa or more depressed at 200 N {20 kgf, 45 lbf} Power brake unit fluid At 67 kPa {500 mmHg, pressure when pedal 20 inHg}:8.75 kpa or depressed at 200 N {20 PRUH kgf, 45 lbf} Minimum front disc pad 1.5 mm min thickness Minimum front disc 30 mm plate thickness Minimum front disc 30.8 mm plate thickness after machining using a brake lathe on-vehicle Front disc plate runout 0.05 mm {0.002 in} limit PD[ Minimum rear brake 1.0 mm {0.04 in} lining thickness Maximum rear brake 4x2 (except Hi-Rider): drum diameter 271.5 mm {10.68 in} Hi- Rider, 4x4: 296.5 mm {11.67 in} Parking brake lever 3–6 notches stroke when pulled at 98 N {10 kgf, 22 lbf} Load sensing proportioning valve (LSPV) fluid pressure Type Front wheel Rear wheel cylinder fluid cylinder pressure (kPa (kPa ) 4x2 (except Hi- 4,900 1,950-2,470 Rider) 9,800 3,070-3,910 Hi-Rider, 4x4 & 4,900 1,820-2,320 4x2 9,800 2,950-3,750

Página 165 · Ajuste da válvula proporcionadora com sensor de carga do freio

Brake Load Sensor Proportioning Valve Adjustment

Brake System - General Information 206-00-3 206-00-3 GENERAL PROCEDURES Brake Load Sensor Proportioning Valve Adjustment(12 136 0) 1. Place the unloaded vehicle on level ground. Unloaded: Fuel tank is full. Jack and tools are in designated position. 2. A change of 5 mm (0.20 in) in dimension L results in a change of the following. DCF411ZWB004 3. Adjust main spring dimension L between the LSPV and the adjustment link loosening and repositioning the LSPV. ‡ Decrease dimension L if the fluid pressure is low. ‡ Increase dimension L if the fluid pressure is high. 4. Specification Dimension L Type Dimension x (mm {in}) 4x2 (except Hi-Rider) 166.0–173.0 Without 4W-ABS (5.808–6.082) Hi-Rider, 4x4 Without 184.5–191.5 4W-ABS (6.910–7.185) 5. Tightening the nut. Specification 11.4–15.6 Nm (1.90–2.59 kgfm, 13.8–18.7 ftlbf). 6. After adjustment, recheck the fluid pressure. Type Change (kPa {kgf/ cm2, psl}) 4x2 (except Hi-Rider) 625 (8.7, 123) Without 4W-ABS Hi-Rider, 4x4 Without 510 (11, 154) 4W-ABS If not as specified, replace the LSPV as a component.

Página 166 · Verificação da oscilação do disco de freio dianteiro

Front Brake Disc Runout Check

Brake System - General Information 206-00-4 206-00-4 GENERAL PROCEDURES Front Brake Disc Runout Check Special Tool(s) / General Equipment 205-044 Holding Fixture, Dial Indicator Gauge 15008 205-069 Dial Indicator Gauge (Metric) 15046 205-070 Holding Fixture, Dial Indicator Gauge 15022A Calliper Gauge Activation 1. Refer to: Wheel and Tire (204-04 Wheels and Tires, Removal and Installation). 2. 2 1 E125507 3. NOTE: The total dial indicator gauge reading should not exceed specification. Special Tool(s): 205-069, 205-070, 205-044 205-069 205-070 205-044 E130414 4. NOTE: The total dial indicator gauge reading should not exceed specification. Special Tool(s): 205-069, 205-070, 205-044 205-069 205-070 205-044 E130415 5. NOTE: If any of the measurements exceed the run out specification of 0.05 mm or the brake disc thickness variation is more than 0.018 mm, a new brake disc must be installed and the brake disc runout re-checked. Using a suitable micrometer, measure the brake disc thickness at eight positions, 45 degrees

Página 167 · Verificação da oscilação do disco de freio dianteiro

Front Brake Disc Runout Check

Brake System - General Information 206-00-5 206-00-5 GENERAL PROCEDURES apart and approximately 10 mm from the outer edge of the brake disc. General Equipment: Calliper Gauge E44414

Página 168 · Verificação de vazamento do sistema de freios

Brake System Leak Check

Brake System - General Information 206-00-6 206-00-6 GENERAL PROCEDURES Brake System Leak Check Check 1. NOTE: Brake fluid is water soluble and it is possible that all evidence of fluid leakage has been washed off if the vehicle has been operated in rain or snow. Check the brake fluid level. Add brake fluid as necessary. 2. Apply the brakes several times and make sure the pedal feel is not spongy. If necessary, bleed the brake system. For additional information, refer to Brake System Bleeding in this section. 3. Check the brake fluid level and verify that the fluid level is actually dropping. 4. NOTE: If the brake fluid level drops and no external leak is evident, check for a brake master cylinder bore end seal leak. Locate and correct the external leak.

Página 169 · Sangria do sistema de freios

Brake System Bleeding

Brake System - General Information 206-00-7 206-00-7 GENERAL PROCEDURES Brake System Bleeding(12 141 0) General Equipment Worldwide Diagnostic System (WDS) Bleeding All Vehicles WARNING: Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with the eyes. Wash hands thoroughly after handling. If brake fluid contacts the eyes, flush the eyes for 15 minutes with cold running water. Get medical attention if irritation persists. If taken internally, drink water and induce vomiting. Get medical attention immediately. Failure to follow these instructions may result in personal injury. CAUTION: If brake fluid is spilt on the paintwork, the affected area must be immediately washed down with cold water. NOTE: Make sure that the vehicle is standing on a level surface. NOTE: The system consists of separate circuits for each front and diagonally opposite rear wheel. Each circuit can be bled independently. 1. CAUTION: The brake fluid reservoir must remain full with new, clean brake fluid at all times during bleeding. Install the bleed tube to the bleed nipple. 2. Immerse the end of the bleed tube in a bleed jar containing a small quantity of approved brake fluid. 3. Position the bleed jar base at least 300 mm above the bleed nipple to maintain fluid pressure and prevent air leaking past the threads of the bleed nipple. 4. Loosen the rear left bleed nipple by one-half turn. 5. Operate the brake pedal fully (pumping brake fluid and air into the bleed jar) and allow the brake pedal to return to the rest position. 6. NOTE: Rear brakes only. Rapidly operate the parking brake control several times. 7. Fill the brake fluid reservoir to the MAX mark. 8. Continue operating the brake pedal until air-free fluid is being pumped into the bleed jar. 9. With the brake pedal fully depressed tighten the bleed nipple. 10. CAUTION: Make sure that the bleed nipple cap is installed after bleeding the brake line(s). This will prevent corrosion to the bleed nipple. Failure to follow this instruction may result in the bleed nipple becoming seized. Repeat the procedure for the remaining brake lines in the following order: 1. Front left. 2. Front right. 3. Rear right. Vehicles with anti-lock brakes 11. NOTE: This step is only necessary when changing the brake fluid to remove the used brake fluid from the hydraulic control unit (HCU). Using WDS, bleed the brake system.

Página 170 · Sangria do sistema de freios sob pressão

Brake System Pressure Bleeding

Brake System - General Information 206-00-8 206-00-8 GENERAL PROCEDURES Brake System Pressure Bleeding(12 141 0) General Equipment Worldwide Diagnostic System (WDS) Brake/clutch system pressure bleeder/filler Bleeding All vehicles WARNING: Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with the eyes. Wash hands thoroughly after handling. If brake fluid contacts the eyes, flush the eyes for 15 minutes with cold running water. Get medical attention if irritation persists. If taken internally, drink water and induce vomiting. Get medical attention immediately. Failure to follow these instructions may result in personal injury. CAUTION: If brake fluid is spilt on the paintwork, the affected area must be immediately washed down with cold water. NOTE: Make sure that the vehicle is standing on a level surface. NOTE: The system consists of separate circuits for each front and diagonally opposite rear wheel. Each circuit can be bled independently. 1. Fill the brake fluid reservoir to the MAX mark. 2. CAUTIONS: Make sure that the pressure within the brake system does not exceed 1 bar. Make sure that the pressure bleeding equipment is filled with new brake fluid to the correct specification. Using the brake/clutch system pressure bleeder/filler, pressure bleed the system in accordance with the manufacturer's instructions in the following order: 1. Rear left. ‡ Rapidly operate the parking brake control several times. 2. Front left. 3. Front right. 4. Rear right. ‡ Rapidly operate the parking brake control several times. CAUTION: Make sure that the bleed nipple cap is installed after bleeding the brake line(s). This will prevent corrosion to the bleed nipple. Failure to follow this instruction may result in the bleed nipple becoming seized. 3. Fill the brake fluid reservoir to the MAX mark as necessary. Vehicles with anti-lock brakes 4. NOTE: This step is only necessary when changing the brake fluid to remove the used brake fluid from the hydraulic control unit (HCU). Using :'6, bleed the brake system.