TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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7-5. MASTER CYLINDER MAINTENANCE This task covers: a. Removal c. Bleeding b. Installation INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Maintenance and repair shop equipment: automotive (Appendix B, Item 2) Materials/Parts Four locknuts (Appendix G, Item 156) Personnel Required One mechanic One assistant Manual References TM 9-2320-387-10 TM 9-2320-387-24P Equipment Condition • Hood raised and secured (TM 9-2320-387-10). • Left splash shield removed (para. 10-23). Maintenance Level Unit a. Removal CAUTION Cover or plug all open lines and connections immediately after disconnection to prevent contamination. Remove all plugs prior to connection. NOTE Perform step 1 for M1114 models only. 1. Remove locknut (10), washer (11), and bracket (12) from hydro-boost (1). Discard locknut (10). NOTE Have drainage container ready to catch brake fluid. 2. Disconnect brake lines (5) and (6) from master cylinder (2). 3. Remove locknut (3), washer (4), and differential valve bracket (7) from right master cylinder mounting stud (9). Discard locknut (3). CAUTION Do not lean on master cylinder. Damage to master cylinder may result. 4. Remove two locknuts (8) and master cylinder (2) from hydro-boost (1). Discard locknuts (8). CAUTION Ensure O-ring is properly seated on master cylinder prior to installa- tion. Damage to master cylinder may result if O-ring is not properly seated. b. Installation TM 9-2320-387-24-1 7-14 Change 1