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11

Figure 6 - Bendix

® 

AD-IS

®

 Air Dryer & Reservoir System Delivery Check Valve

Governor Gasket 

(special gasket,

see assembly note 6

)

Governor

(non-adjustable, 

130 psi cut-out)

Bolts

Adapter

Large 

O-ring

Spring

Check 

Valve 

Body

Small 

O-ring

CLEANING & INSPECTION

1.  Use a suitable solvent to clean all metal parts, and 

use a cotton swab to clean the bore (Note: Do not use 

abrasives or tools to clean the bore: any scratches 

caused may necessitate replacing the Bendix

®  

AD-IS

® 

air dryer & reservoir system.) Superficial 

external corrosion and/or pitting is acceptable.

2.  Clean the o-rings with a clean dry cloth.  Do not use 

solvents.

3.  Inspect for physical damage to the bore and the check 

valve seat.  If the bore is damaged (by scratches, 

etc. that would prevent the delivery check valve from 

seating), replace the AD-IS air dryer.

4.  Inspect the delivery check valve, o-rings, etc. for wear or 

damage.  Replace, if necessary, using the check valve 

replacement  kit  available  at  any  authorized  Bendix

® 

 

parts outlets.

5.  Inspect all air line fittings for corrosion and replace as 

necessary.

ASSEMBLY

1.  Lubricate the smaller o-ring and check valve body with  

a heavy-duty lithium grease.

2.  Install this o-ring on the check valve body by sliding  the 

o-ring over the set of four tapered guide lands.  The  

o-ring groove holds the o-ring in its correct location.  

3.  At the other end of the check valve body, the spring is 

installed over the set of four straight guide lands.  When 

the spring has been pushed to the correct location, the 

check valve body is designed to hold the end of the 

spring in position: be sure that the spring is not loose 

before continuing with this installation.

4.  Install the assembled check valve body/o-ring/spring 

into the delivery port so that the o-ring rests on its seat 

and the free end of the spring is visible.

5.  Grease the adapter and the remaining larger o-ring and 

install it onto the fitting.  

6.  Position the governor gasket, then insert the governor 

mounting bolts through the governor and tighten (to 

125 in-lbs).  

Note: 

Do not replace with a standard 

compressor/governor gasket.

7.  Re-attach the line to the governor.
8.  Before placing the vehicle back into service, check 

to see that the system pressure now builds to full 

operational pressure.

Содержание SD-08-2418

Страница 1: ...or Exhaust 23 AUX 2 Auxiliary Delivery Port Pressure Protection Valves 4 Purge Valve RES Governor Reservoir 2 Figure 1 Bendix AD IS AD IS PuraGuard Oil Coalescing Air Dryer Reservoir Systems Desiccant...

Страница 2: ...the electrical system in a manner that safely removes all electrical power from the vehicle Never exceed manufacturer s recommended pressures Never connect or disconnect a hose or line containing pres...

Страница 3: ...essure protection valves is to protect each reservoir from a pressure loss in the other reservoir or a pressure loss in an air accessory Each of the pressure protection valves in theAD ISair dryer res...

Страница 4: ...as adsorption Dry air exits the desiccant cartridge through the center of the base assembly then flows to the delivery check valve through an orifice and into the purge reservoir The delivery check va...

Страница 5: ...ck Valve open Primary Port PRI Purge Valve Open Turbo Cut Off Valve Closed Engine Turbo Unloader Port Supply Port Primary Reservoir Pressure Protection Valves Exhaust Safety Valve Purge Reservoir Drai...

Страница 6: ...ve housing With the turbo cut off valve seated in the closed position air in the compressor discharge line as well as the AD IS air dryer inlet port cannot enter the air dryer By completing these acti...

Страница 7: ...oo close to the air compressor For assistance contact the Bendix TechTeam at 1 800 AIR BRAKE 1 800 247 2725 option 2 or bendix com D In areas where more than a 30 degree range of temperature occurs in...

Страница 8: ...cold weather operation as follows A Electric Power to the Dryer Refer to Figure 4 With the ignition or engine kill switch in the RUN position check for voltage to the heater and thermostat assembly us...

Страница 9: ...vailable for the servicing of the pressure protection valves Do not attempt to adjust or service the pressure protection valves incorrect pressure protection valve settings can result in the automatic...

Страница 10: ...s not build use the following procedure to remove clean and reinstall the delivery check valve DELIVERY CHECK VALVE CLEANING PROCEDURE Note This is only required if system pressure does not build afte...

Страница 11: ...for corrosion and replace as necessary ASSEMBLY 1 Lubricate the smaller o ring and check valve body with a heavy duty lithium grease 2 Install this o ring on the check valve body by sliding the o ring...

Страница 12: ...12 NOTES...

Страница 13: ...governor cut out and allow a full minute for the normal dryer purge cycle to empty the purge reservoir Switch off the engine and apply and release the brakes so that the system pressure reaches gover...

Страница 14: ...Air dryer not purging F Refer to Symptom 6 G Purge air exhaust time is insufficient due to excessive system leakage G Refer to Symptom 1 3 Safety valve on the air dryer is popping off or exhausting a...

Страница 15: ...air dryer purge valve exhaust may look like whitish liquid or paste or small beads A Faulty dryer cartridge A Replace the Bendix AD IS air dryer cartridge or AD IS air dryer B Excessive dryer vibrati...

Страница 16: ...007 2018 Bendix Commercial Vehicle Systems LLC a member of the Knorr Bremse Group 04 18 All Rights Reserved Log on and Learn from the Best On line training that s available when you are 24 7 365 Visit...

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