Fluke Calibration 4322-SYS-NAVAIR, Service Manual

Page: 63 / 186

Controller Maintenance
Controller Part Replacement
4
4-11
10. Remove the t-fitting (

) shown in Figure 4-6 by pressing in on the plastic ring
around the tube and pulling the TEE away from the bulkhead fitting.
11. Remove tubeweld (

) shown in Figure 4-6. To do this, remove the two screws (

)
and washers (

) that secure the tubeweld (

) to the manifold.
Note
It is critical to have the fitting facing up when removed to ensure that
the spring
(

) and ball (

) are not lost. The seat check valve (

)
should stay in the tubeweld."Facing up" is defined as the chassis is
oriented upside down with the control panel pointed down towards, or
resting, on the work bench.
Once the tubeweld has been removed, use a piece of tape to cover the
fitting on the manifold to keep the spring and ball inside.
12. Remove the display. See “Display” on page on page 4-22.
13. Separate the control panel from the chassis. Make sure the tubeweld is not damaged
or bent during the separation.
Reinstall the control panel as follows (see Figure 4-4):
1.
Install the display. See “display” on page on page 4-22.
2. Install the tubeweld (

) shown in Figure 4-6. To do this, first insert the spring (

)
down into the mating seat, then insert the ball (

). Then install the two screws (

)
and washers (

) that secure the tubeweld (

) to the manifold.
Note
It is critical to have the fitting facing (front panel display facing down
on the work bench) up when removed to ensure that the spring
(

) and
ball (

) are not lost. The seat check valve (

) and o-ring (

) should
stay in the tubeweld.
3. Connect N, L, G wires (

) on the power entry module shown in Figure 4-6.
4. Install the t-fitting (

) shown in Figure 4-6.
5. Connect the tubeweld HM2 fitting (

) to the CPS dock (see Figure 4-4).
Note
The o-ring (

) and anti-extrusion ring (

) should remain in CPS
dock. The sleeve actuator (

) and wave spring (

) , should stay on
the tubeweld HM2 fitting. The sleeve actuator orientation is important.
The thin flange portion should face away from the CPS dock and
towards the wave spring.
6. Install the CPS NC isolation valve on the CPS dock. See “CPS Dock and NC
Isolation Valve” on page 4-29.
7. Install the communications box (not shown) to allow access to the CPS isolation
valve. See “Communications Box” on page 4-24.
8. Install the pump bracket assembly (

). See “Pump Bracket” on page 4-14.
9. Disconnect the following cables from main PCA (see Figure 4-5):
a. Connect the display ribbon cable to (J9) on the main PCA.
b. Connect the display power cable to (J7) on the main PCA.
c. Connect the keyboard cable to (J16) on the main PCA. Reinstall the anti-
vibration device.
d. Connect the communication box cable to (J11) on the main PCA. Reinstall the
anti-vibration device.
e. Connect the CPS dock VH2 cable to (J6) on the main PCA.