Arrow Kart, Руководство пользователя

Страница: 21 / 32

Adjustable Brake Balance
Adjustable Brake Balance Bar
(as fitted on some 125cc gearbox karts)
Problem: “Too much front end bite on turn-in”
Solution: With the 125cc gearbox karts, adjust the brake bias to more rear brakes.
The brake balance bar fitted on 125cc gearbox karts allows you to regulate the percentage of braking done
between the front and rear wheels. The balance bar distributes the brake pedal movement transmitted to
the front brake’s and the rear brake’s master cylinder pumps. The best way of adjusting the brake bias is to
do it when the kart is on the kart stand. Adjust the brake balance bar into a position where, with pressure
applied on the brake pedal, both front and rear wheels can just be turned by hand.
Brake Maintenance
1. Always check the feel of the brake pedal making sure it feels hard without any sponginess.
If the pedal does feel a little spongy, bleed the system only using racing Dot-4 grade hydraulic brake fluid,
(we recommend Shell.) Do not use Silicon brake fluid. Before attempting to bleed the brake, retract the
dust boot on master cylinder to check if piston is against the circlip (adjust the pushrod if necessary.) To
bleed the brake, depress master cylinder lever. Whilst keeping pressure on the lever, open the bleed screw
in the brake caliper. Keep pressure on the master cylinder lever until the bleed screw is tightened. Release
the lever. Repeat this process while maintaining the reservoir fluid level, until the new fluid has been
flushed through the system. Repeat for other side of the caliper. If, having done this, the brake pedal still
feels spongy, check for leaks. As a safety check, make sure the pad retaining bolts are tight. We do check
them at the factory but double-checking never hurt anyone. Not checking might!
Note: After a period of 3 months it is recommended you replace the brake fluid by rebleeding. Whilst
bleeding the brake, ensure the fluid level does not drop. Ensure pad adjustment is kept within
tolerance given. Lack of adjustment will result in caliper piston and bore wear becoming excessive,
and leakage occurring.
2. Ensure the master cylinder lever always has free play. If the brake rod is adjusted in such a
way that no free play exists and the master cylinder lever has pressure on it, adjust either
your pedal stop or brake rod length.
ADJUSTABLE BRAKE BALANCE/BRAKE MAINTENANCE 19