BENDIX SC-3 INLINE SINGLE CHECK VALVES Handmatig - Pagina 2
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INSTALLATION
The straight SC-3
check valve consists of a two piece
™
body. When installing the valve, tighten using the hex
surface that is closest to the port that it is being installed in.
See Figure 4. This will prevent breaking the seal between
the two halves which would cause leakage.
use this surface
for tightening
FIGURE 4 - SC-3
CheCk valve with 2 pieCe body
™
OPERATION & LEAKAGE CHECKS
NOTE: Depending upon installation, it may be easier or
necessary to completely remove check valves so that the
following checks may be made.
With air pressure present at outlet side of check valve and
the inlet side open to atmosphere, coat the open end of
the check valve with soap suds; a 1" bubble in 5 seconds
is permissible (100 SCCM).
If the check valve does not function as described, or
leakage is excessive, it is recommended that it be replaced
with a new genuine Bendix part available at any Bendix
parts outlet.
REMOVAL
Block and hold vehicle by means other than air brakes.
Completely drain all reservoirs.
Disconnect air lines at single check valve and remove.
DISASSEMBLY/ASSEMBLY
Note: There are no Disassembly/Assembly procedures for
SC-3
valves. They are non-serviceable items. If a valve
™
does not meet the Operational and Leakage tests, it should
be replaced at any authorized Bendix parts outlet.
TESTING AND TROUBLESHOOTING
Perform "Operating and Leakage Checks".
2
Do Not use this
surface for
tightening
BW1892 © 2007 Bendix Commercial Vehicle Systems LLC. All rights reserved. 3/2007 Printed in U.S.A.
general Safety guidelineS
warning! pleaSe read and follow theSe
inStruCtionS to avoid perSonal injury or
death:
when working on or around a vehicle, the following
general precautions should be observed at all times.
1. Park the vehicle on a level surface, apply the parking
brakes, and always block the wheels. Always wear
safety glasses.
2. Stop the engine and remove ignition key when working
under or around the vehicle. When working in the engine
compartment, the engine should be shut off and the
ignition key should be removed. Where circumstances
require that the engine be in operation, EXTREME
CAUTION should be used to prevent personal injury
resulting from contact with moving, rotating, leaking,
heated or electrically charged components.
3. Do not attempt to install, remove, disassemble or
assemble a component until you have read and
thoroughly understand the recommended procedures.
Use only the proper tools and observe all precautions
pertaining to use of those tools.
4. If the work is being performed on the vehicle's air brake
system, or any auxiliary pressurized air systems, make
certain to drain the air pressure from all reservoirs
before beginning ANY work on the vehicle. If the
vehicle is equipped with an AD-IS
a dryer reservoir module, be sure to drain the purge
reservoir.
5. Following the vehicle manufacturer's recommended
procedures, deactivate the electrical system in a
manner that safely removes all electrical power from
the vehicle.
6. Never exceed manufacturer 's recommended
pressures.
7. Never connect or disconnect a hose or line containing
pressure; it may whip. Never remove a component or
plug unless you are certain all system pressure has
been depleted.
8. Use only genuine Bendix
components and kits. Replacement hardware, tubing,
hose, fittings, etc. must be of equivalent size, type
and strength as original equipment and be designed
specifically for such applications and systems.
9. Components with stripped threads or damaged parts
should be replaced rather than repaired.
attempt repairs requiring machining or welding unless
specifically stated and approved by the vehicle and
component manufacturer.
10. Prior to returning the vehicle to service, make certain all
components and systems are restored to their proper
operating condition.
11. For vehicles with Antilock Traction Control (ATC),
the ATC function must be disabled (ATC indicator
lamp should be ON) prior to performing any vehicle
maintenance where one or more wheels on a drive
axle are lifted off the ground and moving.
air dryer system or
®
replacement parts,
®
Do not