TM  9-2320-273-20 Section  II  MAINTENANCE  ALLOCATION  CHART  FOR  TRUCK,  TRACTOR,  M915, M916, AND M920 AND CHASSIS FOR M917, M918, AND M919 (Continued). (1) GROUP NUMBER 06 0612 0613 0617 07 0706 0710 (2) COMPONENT/ASSEMBLY ELECTRICAL SYSTEM (Continued) Low Air Buzzer Backup Alarm Batteries, Box & Cables Batteries Battery Box Battery Cable Chassis  Wiring  Harnesses Trailer Coupling (Electric) TRANSMISSION Ratio Selector Air Control Line Control Group Pump, Oil Oil  Cooler (3) MAINTENANCE FUNCTION Replace Replace Inspect Replace Inspect Replace Repair Inspect Replace Repair Inspect Replace Repair Inspect Replace Inspect Adjust Replace Test Repair Replace Inspect Adjust Replace Test Repair Inspect Service Replace Repair Inspect Inspect Replace (4) MAINTENANCE CATEGORY C 0.5 0.2 0.2 0.2 0.2 0.1 0.3 0.1 O 0.2 0.2 0.6 1.5 1.0 0.5 0.3 3.5 1.0 0.2 0.3 0.6 0.5 2.0 0.2 0.1 F 2.3 8.0 4.0 0.2 H 0.7 2.0 0.5 1.0 2.5 22.0 D (5) TOOLS AND EQUIPMENT 183 thru 185 (6) REMARKS Includes Strainer Change 1   B-11 Transmission