TM 10-3930-671-24 Table 3-1.  Unit Preventive Maintenance Checks and Services Mo-Months Hr-Hours Item Interval Item to be Inspected No. Mo Hr Procedure 1 1 50-250 Critical Fasteners Check torque on critical fasteners (Table 3-3). 2 1 50-250 Engine Change the engine oil and filter crankcase (Appendix F, Planned Maintenance Procedures, Section 3.2). 3 1 50-250 Fan Belt Inspect/adjust fan belt (Appendix F, Cooling System, Section 4.8). 4 1 50-250 Lift Chain Check lift chain for proper adjustment and wear (Appendix F, Planned Maintenance Procedures, Section 3.2). 5 1 50-250 Transaxle Check transaxle fluid level (Appendix F, Planned Maintenance Procedures, Section 3.2). 6 1 50-250 Cooling System Check coolant level (Appendix F, Cooling System, Section 4.8).  Inspect coolant hoses (Appendix F, Cooling System, Section 4.8). 7 1 50-250 Air Intake System Inspect air hoses/clamps (Appendix F, Engine Air Cleaner, Section 4.9). 8 1 50-250 Transaxle Inspect/clean air vent (Appendix F, TA18 Transaxle, Section 7.6).  Check/test inching operation (Appendix F, Planned Maintenance Procedures, Section 3.2). 9 1 50-250 Battery Check battery (Appendix F, Planned Maintenance Procedures, Section 3.2). 10 1 50-250 Gauges/indicators Check operation/functioning of hourmeter, indicator lights, and neutral start switch (Appendix F, Planned Maintenance Procedures, Section 3.2). 11 1 50-250 Brakes Check brake fluid reservoir and lines (Appendix F, Planned Maintenance Procedures, Section 3.2). Check/ adjust parking brake linkage (TM 10-3930-671-10, Chapter 2). 12 1 50-250 Steer Axle & Lines Lubricate steer axle (Appendix E, Lubrication Order). 13 1 50-250 Tilt Cylinders Check/adjust tilt cylinders (Appendix F, Tilt Cylinder Maintenance, Section 10.7). Test tilt cylinder drift (Appendix F, Tilt Cylinder Maintenance, Section 10.7). Check/tighten and lubricate tilt cylinder rod ends (Appendix F, Tilt Cylinder Maintenance, Section 10.7). 14 1 50-250 Upright, Lift Cylinders, Lubricate carriage lift chain (Appendix F, Upright Carriage, Forks Maintenance, Section 13.1).  Check/lubricate side shift assembly (Appendix E, Lubrication Order). 3-9