Руководство по эксплуатации Toyota AC - обслуживание и ремонт системы (EN)

AIR CONDITIONING FOR COLLISION REPAIR Course 504 Technician Handbook © 2012 Toyota Motor Sales, U.S.A., Inc. TOYOTA Technical Training All rights reserved. This book may not be reproduced or copied, in whole or in part by any means, without the written permission of Toyota Motor Sales, U.S.A., Inc. Revision Date: June 26, 2012

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Table of Contents Air Conditioning for Collision Repair Air Conditioning for Collision Course Overview /Menu ....................................................................... 2 Repair Section 1: Safety and Certification Section 1 Topics ................................................................................... 5 Before Working on AC Systems ........................................................... 6 Compressed Gasses ............................................................................ 6 Compressor Oil .....................................................................................

7 Electrical Circuits .................................................................................. 7 Refrigerant ............................................................................................ 8 Certification ........................................................................................... 9 Section 2: AC Section 2 Topics ................................................................................. 11 Toyota Technical Information System (TIS) ....................................... 12 Using TIS: Example ............................................................................

13 Gaskets & O-rings ............................................................................... 15 Tightening Fittings ............................................................................... 15 Quick Disconnect ................................................................................ 16 Quick Connect .................................................................................... 17 Repair Resources & Tips Disconnect ...................................................................................... 17 Connect ..........................................................................................

17 Prevent Contamination ....................................................................... 18 Contaminants .................................................................................. 18 Techstream ......................................................................................... 19 Techstream Lite .............................................................................. 19 Techstream Health Check .................................................................. 20 Section 3: AC System Section 3 Topics .................................................................................

21 System Overview ................................................................................ 22 Visual Inspection & Performance Checks ........................................... 23 Basic AC System Checks ................................................................... 24 Evaluation AC Indicator Light ........................................................................... 24 AC Outlet Temperature ................................................................... 24 Engine Coolant Temperature .......................................................... 25 Temperature Control .......................................................................

25 Refrigerant Line Temperature ............................................................. 26 Compressor Operation ........................................................................ 27 Magnetic Clutch .............................................................................. 27 DL Pulley ........................................................................................ 27 Compressor Drive Belt Tension ...................................................... 27 A/C Pressure Gauge ........................................................................... 29 Static Pressure Test ............................................................................

29 Normal System Pressures .................................................................. 30 Collision Repair & Refinish Training i

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Table of Contents Air Conditioning for Collision Repair Section 4: Refrigerant Section 4 Topics ................................................................................. 31 Cross-Contamination .......................................................................... 32 Identifying Refrigerant ......................................................................... 32 Refrigerant Recovery .......................................................................... 33 Recovery, Evacuation, & Recharging Unit Functions .................................................................................

33 Equipment Variations ...................................................................... 33 Recovery Operation ........................................................................ 33 Service Fitting ................................................................................. 34 Recycling ........................................................................................ 34 Lubricating Oil ..................................................................................... 35 Oil Replacement ................................................................................. 36 Example: Replacing Compressor ................................................... 36 Example:

Replacing Condenser ..................................................... 36 Evacuation .......................................................................................... 37 The 30-30 Rule ............................................................................... 38 Recharging .......................................................................................... 39 Leak Detection .................................................................................... 40 Visual Inspection ............................................................................. 40 Leak Detectors ................................................................................

40 Leak Testing Dyes .......................................................................... 41 Sealants .......................................................................................... 41 Final Inspection ................................................................................... 42 Inspect Operation ........................................................................... 42 Check Outlet Temperature ............................................................. 42 Section 5: Symptoms / Section 5 Topics ................................................................................. 45 Symptoms of Significant Undercharge ...............................................

46 Symptoms of Overcharge ................................................................... 47 Symptoms of Defective Compressor .................................................. 48 Symptoms of Frozen Expansion Valve ............................................... 49 Diagnosis Section 6: Reference: AC System Basics Section 6 Topics ................................................................................. 51 Refrigerant Cycle ................................................................................ 52 System Operation ...............................................................................

53 Expansion Valve Operation ................................................................ 54 Traditional Design ........................................................................... 54 Block-type Design ........................................................................... 54 Evaporator .......................................................................................... 55 Dehumidification ............................................................................. 55 Compressor Types .............................................................................. 57 Compressor Function .....................................................................

57 Magnetic Clutch .................................................................................. 58 Damper Limiter Pulley ......................................................................... 59 Diagnosis ........................................................................................ 59 Electric Inverter Compressor .............................................................. 60 Similar Construction ........................................................................ 60 ii Collision Repair & Refinish Training

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Table of Contents Air Conditioning for Collision Repair Condenser .......................................................................................... 61 Integrated Receiver/Dryer ............................................................... 61 Receiver/Dryer .................................................................................... 62 Desiccant ........................................................................................ 62 A/C Condenser Fans .......................................................................... 63 Fluid Coupling .................................................................................

63 Pressure Switches & Sensors ............................................................. 64 Pressure-Sensing Circuits .............................................................. 64 Types of AC Systems ......................................................................... 65 Collision Repair & Refinish Training iii

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