TM 9-2320-386-10 3-28 (2) Lowering Vehicle. (a) Turn bleeder valve (6) slowly counterclockwise with slotted end of jack handle (5), and wheel (3) will gently lower to ground. (b) Remove wooden block (7), hydraulic jack (8), and handle (5) from under axle housing (4). (c) Turn jack screw (9) until it is completely down and place tools in toolbox. d. Chocking Wheels. WARNING Keep hands out from between chocks and tires. Failure to do so may result in injury to personnel. NOTE Wheels must be chocked before performing any under-vehicle maintenance, or when parking on a grade. (1) On level ground set chocks (1) in front of and behind tire (2) not being raised. If vehicle is parked on a slope, place chocks (1) on the downhill side. (2) After use, remove chocks (1) from tire (2). e. Wheel Replacement. (1) Removal. WARNING • Completely deflate tires before removing from axles if there is obvious damage to wheel components. Injury or death to personnel may result from exploding wheel components. • Super-single wheels and tires together weigh 382 lbs (173 kg). Do not attempt to remove and install a wheel and tire without assistance. Doing so may result in injury to personnel. 3-9. WHEELS AND TIRES (Contd) 3 4 6 7 8 9 5 2 1