TOYOTA PREVIA 91-97 REPAIR MANUAL

9-8 BRAKES

Front brake pressure

kPa (kgf/cm', psi}

8,826 (90, 1,280)

Rear brake pressure

kPa (kgf/cm', psi)

6,659 - 7,639

(67.9 - 77.9,986 - l

Fig. 21 Rear pressure with rear disc brakes and without ABS

Front brake pressure

kPa (kgf/cm 1 , psi)

8,826(90, 1,280)

Rear brake pressure

kPa (kgf/cm*, psi)

6,502 - 7,482

(66.3 - 76.3, 943 - 1.08

Fig. 22 Rear pressure with rear disc brakes and ABS

Fig. 23 Turning the adjusting nut to lengthen or shorten the

pressure

Fig. 24 Tighten the nut while retaining the adjusting bolt

7. If necessary, adjust the fluid pressure:
   a. Adjust the spring shaft length by turning the adjusting nut.

• Low pressure-lengthen A
  
  
  • High pressure-shorten A
    b. For every turn of the adjuster, the fluid pressure with change by
    about:
  
  
  • Rear drum—28.4 psi (196.1 kPa)
  
  
  • Rear disc—55.5 psi (381.5 kPa)
    c. Tighten the nut to 9 ft. Ibs. (13 Nm).
  
  
  
  

8. Remove the gauge and bleed the brake system.


9. Check for leaks and test drive the vehicle.

Brake Hoses and Pipes

** WARNING

Clean, high quality brake fluid is essential to the safe and

proper operation o! the brake system. You should always buy

the highest quality brake fluid that is available. If the brake fluid

becomes contaminated, drain and flush the system, then refill

the master cylinder with new fluid. Never reuse any brake fluid.

Any brake fluid that is removed from the system should be dis-

carded.

r'^ frequently for

leaks jnu exiaiiai j ,. ,• pafULuisrly prone to crushing

and kinking under the vehicle. Any such deformation can restrict the proper

flow of fluid and therefore impair braking at the wheels. Rubber hoses

should be checked for cracking or scraping; such damage can create a

weak spot in the hose and it could fail under pressure.

Any time the lines are removed or disconnected, extreme cleanliness

must be observed. Clean all joints and connections before disassembly (use

a stiff bristle brush and clean brake fluid); be sure to plug the lines and ports

as soon as they are opened. New lines and hoses should be flushed clean

with brake fluid before installation to remove any contamination.

REMOVAL & INSTALLATION

I See Figures 25 thru 36

1. Disconnect the negative battery cable.


2. Raise and safely support the vehicle on jackstands.


3. Remove any wheel and tire assemblies necessary for access to the
   particular line you are removing.