TM 9-2320-361-20 Section Ill. INSTRUMENTS, SENDING UNITS, SWITCHES, AND HORN MAINTENANCE 4-9. INSTRUMENTS, SENDING UNITS, SWITCHES, AND HORN MAINTENANCE INDEX PARA. NO. TITLE PAGE NO. 4-10. 4-11. 4-12. 4-13. 4-14. 4-15. 4-16. 4-17. 4-18. 4-19. 4-20. 4-21. 4-22. 4-23. 4-24. 4-25. 4-26. 4-27. 4-28. 4-29. 4-30. 4-31. 4-32. 4-33. 4-34. 4-35. 4-36. 4-37. Instrument Cluster Replacement Air Pressure Gage Replacement Oil Pressure Gage, Battery and Generator Gage, Fuel Gage, and Engine Temperature Gage Replacement Speedometer and Tachometer Replacement Tachometer Drive shaft and Drive Core Maintenance Tachometer Adapter Replacement Speedometer Drive shaft and Adapter Replacement Headlight High Beam Indicator and Lamp Replacement Light Switch Replacement Turn Signal Control and Indicator Lamp Replacement Turn Signal Flasher Replacement Accessory Switch Replacement Manifold Heater Switch Replacement Oil Pressure Sending Unit Replacement Engine Temperature Sending Unit Replacement Low Air Pressure Switch Replacement Fuel Level Sending Unit Replacement Low Air Buzzer Replacement Headlight Dimmer Switch Replacement Stoplight Switch Replacement Horn Button Replacement Air Horn, Solenoid, and Bracket Replacement Stoplight Air Pressure Switch Replacement (M275A2) Circuit Breaker Replacement Hot Water Personnel Heater Control Switch Replacement Hot Water Personnel Heater Blower Motor Resistor Replacement Front-Wheel Drive Lock-In Switch Indicator and Air Pressure Switch Replacement Fuel Pressure Switch Replacement 4-16 4-20 4-22 4-24 4-26 4-28 4-30 4-32 4-33 4-34 4-35 4-36 4-37 4-38 4-39 4-40 4-41 4-42 4-44 4-45 4-46 4-48 4-50 4-51 4-52 4-53 4-54 4-56 4-15 I