Brake System. Doosan G33P-5 Plus

Brake System

Brake System Air Removal

When the brake pedal resistance is spongy (not solid) it is usually an indication that there is air in the brake hydraulic system. The cause may be low fluid or oil level, leakage in the system, a broken brake line or a brake line that is not connected. To remove air from the brake system, do the procedure that follows.

Parking Brake Test

WARNING

To prevent personal injury, the operator must be ready to use the service brake if the parking brake is not adjusted correctly and the lift truck starts to move.

1. Drive the fully loaded lift truck forward up a 15% incline.

2. Half way up the incline, stop the lift truck with the service brakes. Make an application of the parking brake.

3. If the parking brake has the correct adjustment, the lift truck will be held in this position.

4. If the parking brake does not hold, do the steps in

Parking Brake Adjustment.

IDCS213P

Right Bleed Screw Location (Left Not Shown)

(1) Bleed Screw.

1. Check the hydraulic oil level in oil reservoir and fill if needed. See Operation and Maintenance

Manual.

2. Start the engine and keep it at low idle.

3. Put pressure on the brake pedal and open bleed screw (1) to let air out of the system. Close bleed screw (1), while pressure is still on the brake pedal, then let the pedal return to the original position.

4. Do Step 3 again as many times as necessary until the brake liquid is free of air.

5. Use the procedure in Steps 3 and 4 again, except this time use the left bleed screw (not shown).

6. Check the hydraulic oil level again and fill as required. See Operation and Maintenance

Manual.

Vehicle System 81 Testing & Adjusting