BENDIX INLET REG VALVE COMP Podręcznik - Strona 5
Przeglądaj online lub pobierz pdf Podręcznik dla Jednostka sterująca BENDIX INLET REG VALVE COMP. BENDIX INLET REG VALVE COMP 6 stron. Inlet regulating valve for compressors
Drukuj stronę4. Adjust shop air to the IRV
compressor to build the vehicle air system pressure to
governor cut-out and note that the compressor unloads.
With the compressor unloaded increase the shop air
pressure to the IRV
™
psi. Pause 15-20 seconds at each pressure setting and
note that the compressor inlet pressure as indicated by
test gauge 'A' is 12 psi or less. If the pressure exceeds
12 psi more than momentarily, the IRV
repaired or replaced.
Note: The tests described in this step must be made
with the compressor unloaded.
5. Test the function of the IRV
engine and simultaneously apply shop air pressure to
the IRV
valve turbo supply port and to the compressor
™
inlet (through the inlet adapter 236701). Beginning at 5
psi, slowly raise the pressure at both locations
simultaneously until an exhaust of air is heard at the
IRV
™
valve's safety valve. Note the pressure on gauge
'A' when the exhaust is heard. If exhaust occurs below
18 psi or above 25 psi, the IRV
or replaced.
REMOVAL
1. Park the vehicle on a level surface and block the wheels
and/or hold the vehicle by means other than the air
brakes.
2. Drain the air pressure from all vehicle reservoirs.
3. Disconnect the turbocharged air line at the 3/4 inch
NPT turbo supply port of the IRV
4. Remove the two cap screws that secure the IRV
then remove the valve itself.
INSTALLATION
1. Install a new gasket on the mounting flange of the IRV
valve and using two cap screws secure the IRV
Note: If 5/16 inch cap screws are used to secure the
IRV
valve to the compressor inlet, torque the cap screws
™
to between 125 and 150 pound inches.
2. Reconnect the turbocharged air line to the 3/4 inch NPT
turbo supply port of the IRV
3. Before placing the vehicle in service, close all reservoir
drain cocks and build air system pressure to governor
cut-out.
DISASSEMBLY (FIGURE 9)
The following disassembly instructions are presented for
reference purposes. Actual disassembly should not be
undertaken without having the necessary maintenance kit
and instructions available. Refer to Figure 9 throughout
disassembly.
valve to 5 psi and allow the
™
valve in 5 psi increments up to 25
valve should be
™
valve safety. Turn off the
™
™
valve must be repaired
valve.
™
valve.
™
BODY
O-RING
O-RING
VALVE &
PISTON
ASSEMBLY
SPRING
SPACER
O-RING
VALVE SEAT
(O-RING)
CAP NUT
valve,
™
FIGURE 9 - INLET REGULATING VALVE
1. Using an adjustable or two inch wrench remove the cap
™
nut from the body.
valve.
™
2. Remove the spring and spacer.
3. Remove the large diameter o-ring located beneath the
hex head of the cap nut.
4. Taking care not to damage the roll crimp of the cap nut,
remove the small diameter o-ring which serves as the
valve seat.
5. Gently tap the open end of the valve body on a nonmetallic
surface in order to remove the valve and piston assembly.
6. Remove the large and small diameter o-rings from the
exterior of the valve and piston assembly. NOTE: No
further disassembly of the valve and piston assembly
should be attempted. The detail parts of this assembly
are NON-SERVICEABLE.
7. Using a 3/16 inch Allen wrench, remove the exhaust
plug.
8. Remove the valve spring and valve.
VALVE
SPRING
EXHAUST
PLUG
5