BENDIX AD-9si 서비스 데이터 - 페이지 15

{카테고리_이름} BENDIX AD-9si에 대한 서비스 데이터을 온라인으로 검색하거나 PDF를 다운로드하세요. BENDIX AD-9si 16 페이지. Oil coalescing air dryer

페이지 인쇄

SYMPTOM

5. Cannot build system air

pressure.

6. Air dryer does not purge or

exhaust air.

7. Desiccant material being

expelled from air dryer purge

valve exhaust (may look like

whitish liquid, paste, or small

beads.)

8. Unsatisfactory desiccant life. A. Excessive system leakage.

9. "Pinging" noise excessive

during compressor loaded

cycle.

10. The air dryer purge piston

c y c l e s r a p i d l y i n t h e

compressor unloaded (non-

compressing) mode.

BENDIX

AD-9si

TROUBLESHOOTING CHART

CAUSE

A. Supply pressure to the air dryer is not

sufficient.

B. Kinked or blocked (plugged) discharge

line.

C. Excessive bends in discharge line (water

collects and freezes).

D. Refer to Symptom 4.

E. Refer to Symptom 7.

A. Faulty air dryer purge valve.

B. See Causes B, E, and F for

Symptom #4.

A. Faulty dryer cartridge.

B. Excessive dryer vibration.

B. Wrong vehicle application for AD-9si

air dryer.

C. Compressor passing excessive oil.

A. Single cylinder compressor with high

pulse cycles.

A. Compressor fails to "unload".

AIR DRYER

A. Ensure the supply pressure to the air dryer is greater than

110 psi during the system charge.

B. Check to determine if air passes through the discharge line.

Check for kinks, bends, excessive carbon deposits, or ice

blockage.

C. The discharge line should be constantly sloping from the

compressor to the air dryer with as few bends as possible.

D. Refer to Symptom 4, Remedy A.

E. Refer to Symptom 7, Remedies A and B.

A. After determining that air reaches the purge valve piston – by

installing a Tee fitting with a pressure gauge into the control

port – repair the purge valve if necessary.

B. Refer to Symptom 4, Remedies B, E, and F.

A. Replace the Bendix

dryer.

B. Check the AD-9si air dryer mounting for looseness or damage.

Repair the mounting and replace the cartridge.

A. Refer to Symptom 1, Remedy A.

B. Refer to Symptom 2, Remedy C.

C. Check for proper compressor installation; if symptoms

persist, replace the compressor. Refer to Bendix

Troubleshooting Guide for Air Brake Compressor (BW1971).

A. A slight "pinging" sound may be heard during system build-

up when a single cylinder compressor is used. If this sound

is deemed objectionable, it can be reduced substantially by

increasing the discharge line volume.

This can be accomplished by adding a 90 cubic inch (or larger)

reservoir between the compressor and the AD-9si air dryer.

A. Check the air hose from the AD-9si air dryer control port to the

compressor for a missing, kinked, or restricted line. Install or

repair the air hose. Repair or replace the compressor unloader.

Check the compressor for a missing, kinked, or restricted line.

Install or repair the air hose.

REMEDY

AD-9si

air dryer cartridge or AD-9si air

Advanced