BENDIX AD-9 AIR DRYER Guía para resolver problemas

*This guide is only for vehicles that use desiccant air dryers.The guide consists of an introduction to air brake charging systemcomponents, a table s

Symptom: What it may indicate: What you should do:10(g) Restricted air inlet (not enough airto compressor).ð Check compressor air inlet line forrestri

11Symptom: What it may indicate: What you should do:10.0 Air chargingsystem doesn’tbuild air.(a) Governor malfunction*.(b) Restricted discharge line.

Symptom: What it may indicate: What you should do:1215.0 Compressorconstantly cycles(compressorremains unloadedfor a very shorttime.)(a)Air brake cha

13Symptom: What it may indicate: What you should do:This guide attempts to cover mostcompressor system problems. Here aresome rare sources of problems

14TestsExterior leaks at the head gasket are not a sign that oil is being passedinto the air charging system. Oil weepage at the head gasket does not

1. Ensure that the governor control line from thereservoir is located at or near the top of thereservoir. (This line, if located near the bottomof the

16NOTES

HighSTART BASIC TESTIs this atransit vehicle, bulkunloader, or has morethan 5 axles?YES, this is a highair usevehicle.NO, this is a low airuse vehicle

Footnote 1: Note: Typical air dryer cartridge replacement schedule is every 3 yrs/ 300K miles for low air use vehicles and every year/100K miles forhi

Park the vehicle on level ground and chock wheels. Build system pressure to governor cut-outand allow the pressure to stabilize for one minute.1: Obse

2Introduction to the Air Brake Charging SystemPowered by the vehicle engine, the air compressorbuilds the air pressure for the air brake system. Theai

20Technical BulletinBulletin No.: TCH-008-021 Effective Date: 11/1/92 Page: 1 of 2Subject: Air Brake System - Cold Weather Operation TipsAs the cold w

21Bulletin No.: TCH-008-021 Effective Date: 11/1/92 Page: 2 of 2High Duty Cycle Vehicles (City Transit Coaches, Refuse Haulers, Etc.)The maximum disch

Technical BulletinBulletin No.: TCH-008-022 Effective Date: 1/1/1994 Page: 1 of 2Subject: Additional Cold Weather Operation Tips for the Air Brake Sys

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BW1971 • ©2004 Bendix Commercial Vehicle Systems LLC • All Rights Reserved • 9/14/04 • Printed in USA.24

3Compressor with up to 25% duty cycleFootnotes:1 With increased air demand the air dryer cartridge needs to be replaced more often.2 Use the drain val

4üAir Brake Charging System TroubleshootingHow to use this guide:1.0 Oil Test CardResultsNot a valid test.Discontinue using this test.Do not use this

5Symptom: What it may indicate: What you should do:2.2 Oil leakingfrom compressor:(a)Excessive leak at head gasket.(b)Leak at bottom cover plate.(c)L

64.0 Oil in Supply orService Reservoir(air dryer installed)(If a maintained Bendix®PuraGuard™ systemfilter or Bendix®PuraGuard® QC™ oilcoalescing fil

7Symptom: What it may indicate: What you should do:(e)Air compressor discharge and/orair dryer inlet temperature too high.(f) Insufficient coolant flo

Symptom: What it may indicate: What you should do:8(i) Poorly filtered inlet air (poor airquality to compressor).(j) Governor malfunction or setting.

9Symptom: What it may indicate: What you should do:8.0 Oil in ping tankor compressor dis-charge aftercooler.Air brake charging system isfunctioning n