Output Pressure Calibration - Bosch J 41413-200 Operación Manual

J 41413-200 has been calibrated to work with both the 150 PSI nitrogen regulator (Part No.
J 44466-10) and the 1 PSI nitrogen regulator (Part No. J 41413-12). The 150 PSI regulator is part
of the Fuel Line Shutoff Adapter Kit used for the cleaning of fuel injectors; the 1 PSI regulator is
the original regulator delivered with the J 41413 EVAP Pressure/Purge Diagnostic Station.
Based on your location and local climate, it may be necessary to make a slight adjustment to the
tester's output supply pressure before you use it for the first time. Once you make this adjustment,
you should not have to adjust the tester's regulator again, unless you change the nitrogen tank's
regulator. Follow these steps to determine if your tester's pressure regulator needs adjustment:
1. Connect the battery cables from the tester to a fully charged 12V battery.
2. Attach the nitrogen/smoke hose to the self-test port.
3. Set the NITROGEN/SMOKE valve on the front control panel to NITROGEN.
4. Press and release the remote switch to activate the tester.
5. Verify pressure is at 13" H
to Step 6. If pressure is at 13" H

Output Pressure Calibration

6. Remove the plastic cap from the regulator
located on the bottom of the tester. See
Figure 2.
7. Use a flat-blade screwdriver to adjust the
regulator plunger until the pressure /
vacuum gauge reads 13" H
CAUTION: Carefully adjust the pressure regulator. Turning the regulator plunger too
far clockwise (CW) will cause the plunger to lock up; turning the regulator plunger too far
counterclockwise (CCW) will cause the plunger and spring to fall out of the regulator.
8. Disconnect and reconnect the nitrogen/smoke hose from the self-test port.
9. Verify pressure is at 13" H
10. Press and release the remote switch to deactivate the tester.
11. Replace the plastic cap on the regulator, and disconnect the nitrogen/smoke hose from the
self-test fitting.
Output Pressure Calibration
O; if not, proceed
2
O, the
2
is complete.
Self-test
Regulator
O pressure.
2
O; if not, repeat Steps 7 and 8, as necessary.
2
Maintenance
NOTE: Decide which test orifice to use by referring to GM Service information
Self-Test TBD
Port
Figure 2
Test Orifice for Test Orifice for Use Orifices In
.020" (.5mm) .040" (1mm) Nitrogen Mode
TBD
Vehicles Vehicles Only
13