Toyota 4 Runner/Hilux/Surf

1987-1998 of release

Repair and car operation

8.14. Prorolling of brakes

THE GENERAL DATA

Necessity of prorolling arises after a detachment of tubes of the main cylinder or at strong fall of level in a tank.

At dismantling of a hydrodrive of one wheel it is possible to be limited to prorolling only an understanding contour.

Press some times a pedal of a brake and remove residual depression in the amplifier.

Before prorolling restore liquid level in a tank and during prorolling support level, without supposing опопустошения a tank. Fill in only a fresh liquid.

PERFORMANCE ORDER

1. Prorolling begin with a back right wheel. Attach to the union a hose, other end of a hose lower in a vessel with a brake liquid. 2. Ask the assistant to press slowly a pedal of a brake and to keep. 3. Turn away the union and later 2 сек after a stream of a liquid following with bubbles ослабнет, tighten the union. Ask the assistant to release a pedal. 4. Repeat procedure until then while in a following liquid vials will not cease to be observed. Tighten the union. 5. Execute these actions in sequence: the left back wheel, right forward, left forward, a pressure regulator. Upon termination of restore liquid level in a tank. 6. Check up rigidity of a pedal and work of brakes. The prevention If a pedal "soft" repeat prorolling. If to remove air it is not possible, air hit in ABS-system valves can be the reason. Therefore, if a pedal "soft" after repeated prorolling lamps BRAKE or ANTI-LOCK tow off the car in car-care centre for check by the scanner also burn.