Niva Resource: Brake regulator valve adjustment

Brake regulator valve adjustment.

The linkage arm should be perpendicular to the underside of the body. Adjust the angle of the regulator valve to achieve this.

As per the workshop manual : loosen the 2 adjuster bolts, set the distance between the linkage's arm and the floor at 150mm (or use the special tool), and then adjust the regulator valve until there is "light contact between the lever and piston" (under the rubber boot).

Niva brake proportioning valve adjustment

If you have a lift all this goes out the window unless you've elogated the link on the axle by the relevant amount (or perhaps make a tool that is lengthed by the same amount as your lift).

Remember to clean and re-grease the piston with some rubber-friendly grease when you're done.

For reference: Rotating it clockwise will delay the response time and decrease the amount of braking you have at the rear. Rotating anti clockwise has the opposite effect and will increase the braking effect in relation to the load carried.

WARNING: If adjusted wrongly this valve can cause the rears to lock and the vechicle to spin under heavy braking.

The workshop manual also has a section on checking the functioning of the pistion.