Table Of Contents - BENDIX BA-921 COMPRESSOR-STD-CLOSED ROOM Service Data Sheet

Table of Contents

Description1
Operation2
Crankcase Base Cover2
Typical Compressor Drive Flanges2
Air Intake (Loaded)3
Air Compression (Loaded)3
Standard And Closed Room Ba-921 Compressor Charging Systems3
Operation - Loaded (Intake)3
Non-Compression Of Air (Unloaded)4
Section 1: For Standard Compressor. See Figure4
Section 2: For Closed Room Compressor. See Figure4
Lubrication5
Cooling5
Air Induction6
Caterpillar6
Caterpillar C7/C9 Engines6
Detroit Diesel7
Caterpillar C11, C13, C15 And C18 Engines7
Preventative Maintenance7
Compressor Cooling7
Oil Passing8
Compressor Drive8
Compressor Unloader & Governor8
Service Tests8
Important Note8
Standard Compressor Exploded View9
Closed Room Compressor Exploded View10
In Service Operating Tests11
Leakage Tests11
Cylinder Head11
Inlet, Discharge & Unloader11
Compressor Removal & Disassembly12
Maintenance Kits & Service Parts12
Preparation For Disassembly13
Crankcase Cover14
Rear End Cover14
Cleaning Of Parts14
Cylinder Head Assembly14
Inspection Of Parts15
Cylinder Head, Cooling Plate/Valve Plate Assembly/Unloader Mechanism15
Crankcase15
Foot Pounds To Inch Pounds15
Standard Compressors16
Closed Room Compressors16
Closed Room Compressor Head Bolt Torque Sequence16
Unloader Installation17
Testing The Rebuilt Compressor17
Installing The Compressor17
Compressor Specifications (All)18
Torque Specifications18
Advanced Troubleshooting Guide For Air Brake Compressors19
Introduction To The Air Brake Charging System20
The Air Brake Charging System20
Maintenance Schedule And Usage Guidelines21
Air Brake Charging System Troubleshooting22
What You Should Do22
Duty Cycle Too High24
Tests32
Excessive Oil Leakage At The Head Gasket32
Air Brake System And Accessory Leakage32
Air Compressor Discharge Temperature And Air Dryer Inlet Temperature32
Governor Malfunction33
Governor Control Line33
Compressor Unloader Leakage33
Information About The Basic Test Kit (Bendix P/N 5013711)34
Measure The Charging System Contents35
How To Use The Basic Test36
Air Brake System Leakage Test36
If No Air Leakage Was Detected In Step D36
Air Brake System - Cold Weather Operation Tips37
Engine Idling37
Discharge Lines37
High Duty Cycle Vehicles (City Transit Coaches, Refuse Haulers, Etc.)38
System Leakage38
Reservoir Draining (System Without Air Dryer)38
Alcohol Evaporator Or Injector Systems38
Additional Cold Weather Operation Tips For The Air Brake System39
Thawing Frozen Air Lines39
Supporting Air And Electrical Lines39
Automatic Drain Valves (System Without Air Dryer)39