Initial Inspection and Diagnostic Overview

When in the brake master cylinder area, check the brake tubes and brake master cylinder mounting. The brake tubes and flare nuts must be tight. The brake tube flare nuts must not show any signs of leakage. Tighten the brake tube flare nuts to 13-22 Nm (10-16 lb-ft).

The following conditions are considered normal and are not indications that the brake master cylinder is in need of service:
^ Low fluid level detected without signs of leakage. This condition is caused by displacement of fluid from the brake master cylinder reservoir into the rear disc brake calipers, the front disc brake calipers, and/or the rear wheel cylinders to compensate for normal brake wear. Add fluid as needed.
^ A momentary or slight squirt of brake fluid from the brake master cylinder reservoir upon application of the brake pedal. This condition is caused by fluid displacement through the brake master cylinder compensating port as the brake master cylinder pistons move forward in the bore when the brakes are applied.
^ Slight turbulence in the brake master cylinder reservoir fluid when the brake pedal is released. Turbulence occurs as brake fluid returns to the brake master cylinder after releasing the brakes.
^ A trace of brake fluid found on the outside of the power brake booster below the brake master cylinder mounting flange. This condition results from the lubricating action of the master cylinder wiping seal.