1 Read Resource on the principlesprocedure in bleeding air tank considering

1 read resource on the principlesprocedure in

This preview shows page 87 - 90 out of 122 pages.

1. Read: Resource on the principles/procedure in bleeding air tank considering: Nissan Diesel Engine Repair Manual, pp. 6-14 Date Performing Underchassis Preventive Maintenance Page no.
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1.1proper use of personal protective equipment (PPE) 1.2hazards in bleeding air tank. 2 Complete: Checking/inspecting moisture and leakage. 3 Call your teacher to check your work. Change from vapor to liquid. LEARNING EXPERIENCES / ACTIVITIES Learning Outcome #6: Inspect/bleed air tank Learning Activity #2 Resources This is the final activity for LO#5. In this activity, you are going to: 1. Perform the procedure in bleeding an air tank considering: 1.1proper use of personal protective equipment (PPE) 1.2hazards associated in performing the task. 1.3drained accumulated water. 2 Check air tank's pipes, hoses and clips. 3 Call your teacher to check your work. Nissan Diesel Engine Repair Manual, pp. 6-6 to 6-14 INFORMATION SHEET No. 1 (LO6-1) Inspecting/Bleeding Air Tank DESCRIPTION AND OPERATION GENERAL AIR BRAKE SYSTEMS The air brake system consists of three sub-systems; the air supply system, the air delivery system, and the parking/emergency air brake system. The components making up the brake system of each vehicle may differ, but all systems operate in basically the same manner. Date Performing Underchassis Preventive Maintenance Page no.
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All models use a vertically split brake system. If a failure occurs in the front brake system, the rear brake system will continue to operate and give reduced stopping capability until the air supply is depleted. In the event of a failure in the rear system, the relay valve modulates application of the rear spring brake units and the front brakes continue to function. AIR SUPPLY SYSTEM The air supply system is the source of air pressure for the brake system. It consists of a compressor, reservoirs, governor, low pressure indicator, depth gauge, safety valve, drain cock/automatic moisture ejector valve and tank charging valve. The compressor is engine driven and controlled by a governor. When reservoir air pressure reaches 793-861 kPa (115-125 psi), the governor cuts out the compressor. When reservoir pressure drops to 82-179 kPa (12-26 psi) below the cut-out pressure, the governor allows the compressor to cut in again. When reservoir air pressure drops below 353 kPa (60 psi), the low pressure indicator valve closes an electrical circuit to the warning buzzer and the warning light. If the air reservoir pressure exceeds 1034 kPa (150 psi), the safety valve will release the pressure. The air reservoirs are equipped with manual drain valves and/or an automatic moisture ejector valve which can be drained for the removal of moisture from the air brake system. AIR DELIVERY SYSTEM The air delivery system delivers the air brake pressure from the air supply system to the brake chambers. It controls the amount of air pressure that is delivered to the brake chambers, and thus controls the amount of braking during a stop. It consists of the foot control valve, the relay valve, quick release valve, and the brake chamber.
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