TM 10-3930-671-24 Table 2-2.  Unit Troubleshooting Procedures - CONT. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION SERVICE BRAKE SYSTEM (CONT.) 24. BRAKE PEDAL SPONGY - CONT. Step 4. Cap master cylinder exit port and check brake pedal firmness. If brake pedal is not firm, replace brake master cylinder (Para 3-29). If brake pedal is firm, notify DS/GS maintenance. INCHING BRAKE SYSTEM 25. NO INCHING BRAKE PEDAL. Step 1. Check inching brake hoses for secure connections (Para 3-29). If inching brake hose connections are loose, tighten connections (Para 3-29). If inching brake hose connections are not loose, go to step 2. Step 2. Cap inching cylinder exit port and check inching brake pedal firmness. If inching brake pedal is not firm, replace brake master cylinder (Para 3-29). If inching brake pedal is firm, go to step 3. Step 3. Check inching brake linkage for binding. If inching brake linkage is binding, repair or replace (Para 3-29). If inching brake linkage is not binding, notify DS/GS maintenance. 26. INCHING BRAKE PEDAL SPONGY. Step 1. Check inching brake hoses for secure connection (Para 3-29). If inching brake hose connections are loose, tighten connections (Para 3-29). If inching brake hose connections are not loose, go to step 2. 2-16