SECTION 3 - LUBRICATION AND MAINTENANCE

AS REQUIRED

OPERATION 72

Change the Brake Fluid

The brake fluid should normally not require changing except in the case where contamination of the brake system has occurred. To change the brake fluid and bleed the air from the brake system, use the following procedure:

Shut the tractor off, chock the wheels, and install the articulation lock.

Remove the small clamp and hose from the side of the brake reservoir and allow the fluid to drain. Reinstall the hose and clamp.

Loosen the supply tube, 1, at the caliper and allow the oil trapped in the tube and caliper to drain out. Reinstall the tube to the caliper and tighten.

Refill the reservoir with brake fluid. Have an assistant sit in the operator’s seat and slowly pump the brake pedal several times. After the assistant pumps the brake pedal, apply a steady downward pressure on the pedal.

While the assistant holds the brake pedal down, loosen the brake bleeders, 1, and allow any air and fluid to escape from the caliper pistons. There is a front and rear bleeder on the caliper; alternate loosening the bleeders to purge any air from the system. Make sure the assistant keeps steady downward pressure on the brake pedal anytime the bleeders are open. The pedal will bottom out during each bleeding operation; close the bleeder and repeat the process until the system is purged of all air and the pedal is firm when pressed.

Use DOT 3 brake fluid which may be obtained from your Buhler Versatile dealer.

1

Figure 3-121

Figure 3-122

3-73

Page 297
Image 297
Buhler 2290, 2335, 2425, 2375, 2360 manual Change the Brake Fluid