BENDIX SD-08-2417 Manuale Utente

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DELIVERY CHECK VALVE CLEANING PROCEDURE
(
Note: This is only required if system pressure does not 
build after temporary bypass is completed.)
Refer to  Figure 6 throughout this procedure.  Depressurize 
the air brake system following the General Safety 
Guidelines  outlined  on  page  2  in  this  document.   Also, 
always depressurize the air dryer purge reservoir before 
servicing the air dryer.  
This procedure does not require removal of the Bendix
® 
AD-IS
®
 air dryer from the vehicle.
1.  Remove  the  line  from  governor  and  mark  for  easy 
reinstallation.  
2.  Remove the  bolts attaching the governor to the AD-IS
®
 
air dryer and retain for reassembly.
3.  Remove the governor from the air dryer.  Be aware that 
a short puff of trapped air may vent when the governor is 
removed. Retain the governor gasket for reassembly if  
a new governor gasket is not available.  Remove and 
retain the o-ring from the adapter.
4.  The spring/delivery check valve can now be removed.  
A second delivery check valve is located in the dryer 
without a governor.  This check valve is located behind 
a hex head plug near the control line from the Bendix
® 
 
EverFlow
® 
electronic module to the air dryer.  Carefully 
remove the hex plug and follow the instructions that 
follow.
5.  Remove  and  retain  the  o-ring  from  the  check  valve 
body.
CLEANING & INSPECTION
Consult the service data sheet for the dryer used in your 
AD-IS
®
 EverFlow
®
  assembly.    The  service  data  sheet 
contains information useful for maintenance and service 
of the air dryers.
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 AD-IS
 
 air 
dryer and 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.
FIGURE 6 - 
BENDIX
®
 AD-IS
®
 AIR DRYER DELIVERY CHECK VALVE
GOVERNOR GASKET 
(SPECIAL GASKET,
SEE NOTE 6)
GOVERNOR
(NON-ADJUSTABLE, 
130 PSI CUT-OUT)
BOLTS
ADAPTER
LARGE 
O-RING
SPRING
CHECK VALVE 
BODY
SMALL 
O-RING