1. Check for scratches, swelling, corrosion, traces of fluid leakage on the brake hoses or pipe joints.
2. Check the possibility of adjacent parts interfering with brake pipes/hoses during driving, and loose connections/clamps.
3. Check the master cylinder and wheel cylinders for signs of leaks or scratch marks.
NOTE:
• When the brake fluid level in the reservoir tank is lower than specified limit, the brake warning light on the combination meter will illuminate.
• Visually check the brake hose for damage. (Use a mirror where it is difficult to see)
|
(1) |
Front brake hose |
|
(2) |
Front brake pipe |
|
(3) |
Clamp |
|
(1) |
Rear brake pipe |
|
(2) |
Rear brake hose |
|
(3) |
Clamp |
1. Check the free play of brake pedal with a force of 10 N (1 kgf, 2 lbf) or less.
Brake pedal free play:
0.5 — 2.0 mm (0.02 — 0.08 in)
|
(A) |
Pedal free play |
2. If the free play is out of specifications above, adjust the brake pedal as follows.
(1) Make sure the engine is off. (No vacuum is applied to brake booster.)
(2) There should be play between brake booster clevis and pin at brake pedal installing portion. [Depress brake pedal pad with a force of 10 N (1 kgf, 2 lbf) or less to a stroke of 0.5 to 2.0 mm (0.02 to 0.08 in).]
(3) Pull on the brake pedal by hand.
(4) If there is no play between the clevis pin and the clevis, turn the brake switch to the left to loosen.
(5) Loosen the lock nut of the operating rod, turn the operating rod to adjust the pedal to the specified height, and tighten the lock nut.
Lock nut tightening torque:
22 N·m (2.2 kgf-m, 16 ft-lb)
Pedal height L:
LHD model
150 — 160 mm (5.91 — 6.30 in)
RHD model
162 — 172 mm (6.38 — 6.77 in)
Brake pedal free play:
0.5 — 2.0 mm (0.02 — 0.08 in)
|
(A) |
Pedal free play |
(6) With the brake pedal pulled towards yourself, push in the switch until the end of the brake switch threads hit the stopper.
(7) With the end of the brake switch threads pushed against the stopper, turn the switch to the right to affix the switch.
(8) Make sure that the gap C between the stopper and the end of the brake switch threads is within specifications.
|
(A) |
Brake switch |
|
(B) |
Switch clip |
|
(C) |
1.35±0.61 mm (0.05±0.02 in) |
|
(D) |
Stopper |
(9) Pull the pedal pad and check the play. Check that the stop light is unlit when the pedal is not depressed.
3. Check the pedal stroke.
While the engine is idling, depress the brake pedal with a 490 N (50 kgf, 110 lbf) load and measure the distance between the brake pedal and steering wheel. With the brake pedal released, measure the distance between pedal and steering wheel again. The difference between the two measured values must be the specified value or less. If the measured value is the same as specification or more, there is possibility of entering air in hydraulic unit.
Brake pedal stroke A:
95 mm (3.74 in)/ 490 N (50 kgf, 110 lbf) or less
|
(A) |
Steering wheel |
|
(B) |
Toe board |
4. Check to see if air is in the hydraulic brake line by the feel of pedal operation. If air appears to exist in the line, bleed it from the system.
5. Check for even operation of all brakes, using a brake tester or by driving the vehicle for a short distance on a straight road.
1. With the engine off, depress the brake pedal several times applying the same pedal force. Make sure the travel distance should not change.
2. With the brake pedal depressed, start the engine. Make sure the pedal should move slightly toward the floor.
3. With the brake pedal depressed, stop the engine and keep the pedal depressed for 30 seconds. Make sure the pedal height should not change.
4. A check valve is built into the vacuum hose. Disconnect the vacuum hose to inspect function of check valve.
Blow compressed air into vacuum hose from the end of brake booster side. Check that the air flows from the air hose on engine side. Next blow air into hose from engine side: Check that the air does not flow from the hose.
Replace the both check valve and vacuum hose if the check valve is faulty. Engine side of vacuum hose is indicated by marking “ENG” as shown.
|
(A) |
Engine side |
|
(B) |
Brake booster side |
5. Check the vacuum hose for cracks or other damage.
NOTE:
When installing the vacuum hose on the engine and brake booster, do not use soapy water or lubricating oil on their connections.
6. Check the vacuum hose to make sure it is tightly secured.