Doosan D15S-5 - Brake System: Oil Temperature Too High; Brake System: Noisy or Grabbing Brakes; Brake System: Brake Shoe Drag; Brake System: Spongy Pedal

Vehicle Systems Testing and Adjusting
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Problem: Brake will not make application.
Probable Cause:
1. Leakage or low fluid level.
2. Lining surface looks like glass (glazed), or worn.
3. Oil or brake fluid is on the lining.
4. Air in the brake hydraulic system.
5. Bad master cylinder.
6. Linkage is not in correct adjustment, or is bent.
Problem: Not braking evenly, or rough feeling of
braking (chatter).
Probable Cause:
1. Lining surface looks like glass (glazed), or worn.
2. Oil or brake fluid is on the lining.
3. Bad contact between the lining and drum.
4. Loose lining.
5. Brake drum out of round.
6. Loose wheel bearing.
7. Bad wheel cylinder.