TM 5-3805-262-201-24. TRANSMISSION AND DRIVE SHAFTS (CONT) 6. CENTER DRIVE SHAFT.Connected between transmission output shaft and front driveshaft. Connection accomplished by universal joints.7. REAR DRIVE SHAFT.Connected between transmission output shaft and rear axle byu n i v e r s a l j o i n t s.1-25. AXLE AND WHEELS 1. FRONT AND REAR AXLES. Doublereduction type driven by propellers h a f t s . F i r s t g e a r r e d u c t i ono c c u r s i n d i f f e r e n t i a l c a r r i e r,second gear reduction occurs inplanetary wheel ends. Front axleis rigidly mounted; rear axle istrunnion mounted. Axles included i f f e r e n t i a l c a r r i e r , p l a n e t a r yends,and disk type brakes on eachwheel.2. DIFFERENTIAL CARRIER.I n t e g r alpart of axle; single reductionunit employs a heavy duty spiralbevel gear.3. PLANETARY ENDS.I n t e g r a l p a r t o f a x l e . Second reduction employs planetary spurgears. Power transmitted by differential carrier to axle shafts drives the sun gear.Sun gear drives planet spur gears which drive the planetary spider and in turn thewheel hub.4. RIMS AND TIRES.Heavy duty steel rims; pneumatic tires 20.5 by 25, tubeless.1-26. BRAKES (See figure FO-l.) PARKING BRAKE SYSTEM.Consists of parking brake valve mounted on right instrumentpanel, air operated parking brake actuator, and parking brake assembly mounted ontransmission output shaft. Refer to page 1-26 for a description of parking brakesystem operation .SERVICE BRAKE SYSTEM.Consists of hydraulic brake system and pneumatic system; op-eration described below.HYDRAULIC BRAKE SYSTEM.Consists of brake calipers mounted on each wheel end andtwo hydraulic brake reservoirs and two brake actuators, one for front wheels and onefor rear wheels. Service brake treadle and valve controls the flow of air to bothbrake actuators. Each actuator has an air chamber and a hydraulic master cylinder.Air pressure from brake treadle and valve flows to air chamber, pushing diaphragmand push rod. This action pushes piston in master cylinder. Hydraulic pressureincreases in brake lines forcing brake caliper piston outward and brake pads inbrake calipers are applied to rotors mounted on axle wheel ends.1-24
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