BENDIX SD-08-2414 manual Bulletins TCH-008-021 and TCH-008-022. Shorter

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BENDIX® AD-IP®AIR DRYER TROUBLESHOOTING CHART

SYMPTOMS

CAUSE

REMEDY

2. Water and/or oil in

E. (Continued)

Air Compressor Size - Although the Bendix®

the supply or service

 

AD-IP®air dryer can be used in conjunction with

reservoir (continued).

 

larger compressors, it was designed primarily for

 

 

units rated for up to 30 CFM. It is recommended

 

 

that when using the AD-IP air dryer with a

 

 

compressor which has a rated displacement

 

 

exceeding 30 CFM that an authorized Bendix®

 

 

parts outlet or Bendix marketing representative

 

 

be contacted for assistance.

 

F. Air compressor discharge

F. Restricted discharge line. See Appendix A, Table

 

and/or air dryer inlet

A, column 1 & 2 for recommended sizes. If the

 

temperature too high.

discharge line is restricted or more than 1/16”

 

 

carbon build-up is found, replace the discharge line.

 

 

Replace as necessary.

 

 

Discharge Line Freeze-Up. The discharge line

 

 

must maintain a constant slope down from the

 

 

compressor to the air dryer inlet fitting to avoid low

 

 

points where ice may form and block the flow. If,

 

 

instead, ice blockages occur at the air dryer inlet,

 

 

insulation may be added here, or if the inlet fitting is

 

 

a typical 90° fitting, it may be changed to a straight

 

 

or 45° fitting. For more information on how to help

 

 

prevent discharge line freeze-ups, see Bendix

 

 

Bulletins TCH-008-021 and TCH-008-022. Shorter

 

 

discharge line lengths or insulation may be required

 

 

in cold climates.

 

 

Insufficient coolant flow through compressor.

 

 

Inspect coolant line. Replace as necessary (Inside

 

 

Diameter (I.D.) is 1/2” min.). Inspect the coolant

 

 

lines for kinks and restrictions and fittings for

 

 

restrictions. Replace as necessary. Verify coolant

 

 

lines go from engine block to compressor and back

 

 

to the water pump. Repair as necessary.

 

 

Restricted air inlet (not enough air to compressor).

 

 

Check compressor air inlet line for restrictions,

 

 

brittleness, soft or sagging hose conditions etc.

 

 

Repair as necessary. Inlet line size is 3/4 ID.

 

 

Maximum restriction requirement for compressors

 

 

is 25 inches of water. Check the engine air filter and

 

 

service if necessary (if possible, check the air filter

 

 

usage indicator).

 

 

Poorly filtered inlet air (poor air quality to

 

 

compressor). Check for leaking, damaged or

 

 

malfunctioning compressor air inlet components

 

 

(e.g. induction line, fittings, gaskets, filter bodies,

 

 

etc.). Repair inlet components as needed.

 

 

Note: Dirt ingestion will damage the compressor

 

 

and is not covered under the warranty.

 

 

If you found excessive oil present in the service

 

 

reservoir and you did not find any issues above,

 

 

the compressor may be passing oil.

 

 

Replace the compressor. If still under warranty,

 

 

follow the normal warranty process.

 

 

 

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Contents SD-08-2414 General Safety Guidelines To Avoid Personal Injury or DeathDryer Troubleshooting Chart at the end of the manual DescriptionGeneral OperationCharge Cycle Refer to Figure Purge Cycle Refer to Figure Bendix AD-IPINTEGRAL Purge AIR Dryer Purge CycleTurbo CUT-OFF Feature Refer to Figure Bendix AD-IPAIR Dryer Sectional ViewPreventive Maintenance Discharge Line Unloader Refer to FigureOperation & Leakage Tests Rebuilding the Bendix AD-IPAIR DryerBendix AD-IP AIR Dryer Removal Bendix AD-IPAIR Dryer Heater Thermostat Connector 23 24 Description Qty Reference FigureDisassembly Bendix AD-IPAIR Dryer Cable Bracket InstallationCleaning & Inspection AssemblyRetrofitting the AD-IP AIR Dryer Bendix AD-IPAIR Dryer InstallationTotal Vehicle Reservoir Volume Requirement Vehicle Application RequirementsMounting the AD-IP AIR Dryer Vehicle PreparationLocating Bendix AD-IPAIR Dryer on the Vehicle Refer to FigureCompressor Discharge Line Connecting the AIR LinesWiring the Heater & Thermostat Refer to Figure Purge Exhaust LineTesting the Bendix AD-IPAIR Dryer Symptoms Cause Remedy Perform tests 1 to 6 in the order presentedBendix AD-IPAIR Dryer Troubleshooting Chart Bendix AD-IPAIR Dryer Troubleshooting Chart Air compressor must remain unloaded for a Minimum of 30 seconds. This minimum purgeIs not covered under the warranty Bulletins TCH-008-021 and TCH-008-022. ShorterColumn Refer to Appendix A, Table a columns 3 & 4 forPreventative Maintenance Section Leakage. Refer to Technical Bulletin TCH-008-040See Causes and Remedies for Symptoms 1, 2 Refer to Remedy C, Symptom #1Low Air Use High Air UseType E & QE Integral Purge AIR DryerHolset CompressorComplaint Air System Builds Too Slow Complaints Common to the Charging & AIR Supply SystemComplaint Can Not Build System Pressure Complaint Can Not Build System Pressure Above X psiComplaint System Pressure Goes to 150+ psi Tests Common to More than ONE Complaint Log-on and Learn from the Best