TM 10-3930-671-24 Table 3-1.  Unit Preventive Maintenance Checks and Services - CONT. Mo-Months Hr-Hours Item Interval Item to be Inspected No. Mo Hr Procedure WARNING Do not change fuel filter when engine is hot; fuel can be ignited by a hot engine. 22 6 1000 Fuel Filter Change fuel filter (Para 3-16, Fuel System Service). Bleed fuel system if required (Appendix F, Diesel Fuel System, Section 5.3). 23 12 2000 Air Cleaner Replace air cleaner element (Appendix F, Air Filter, Section 4.9). 24 12 2000 Radiator Cap Inspect radiator cap.  Pressure test radiator cap and cooling system while checking for leaks (Appendix F, Planned Maintenance Procedures, Section 3.2, and Cooling System, Section 4.8). 25 12 2000 Cooling System Drain/flush cooling system (Appendix F, Planned Maintenance Procedures, Section 3.2, and Cooling System, Section 4.8).  System capacity is 9 qt (8.5 I). 26 12 2000 Brakes Check service brake adjustment (Appendix F, Planned Maintenance Procedures, Section 3.2).  Check brake pedal adjustment (Appendix F, Brake System, Section 8.4). 27 12 2000 Hydraulic Tank Drain and fill hydraulic tank (Appendix F, Planned Maintenance Procedures, Section 3.2, and Hydraulic Sump Fluid and Filter Change, Section 10.1).  Change hydraulic tank filter, (Appendix F, Hydraulic Sump Fluid and Filter Change, Section 10.1). 28 12 2000 Service Brake Check service brake adjustment and wear (Appendix F, Planned Maintenance Procedures, Section 3.2).  Check brake pedal adjustment ( Appendix F, Brake System, Section 8.4). 29 12 2000 Steer Axle and Lines Lubricate/adjust steer wheel bearings (Appendix E, Lubrication Order).  Check power steering relief pressure (Appendix F, Power Steering System Relief Pressure Setting, Section 9.1). 3-11