Flow 94i-D, Руководство пользователя

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6. Remove the pilot valve body by unscrewing the four
cap screws (
5
32
in. socket) in a figure-8 pattern in
1
8
-turn increments until all torque has been
removed.
Lift the pilot valve from the main shift valve. Inspect
the interface sealing rings and replace as necessary.
Note : The pilot valve is oriented on the shift valve
end-for-end and must be replaced in the same
orientation. To help with realignment, the letter “P”
on the pilot valve body corresponds with a “P” on
the shift valve body, and the screws on one end of
the pilot valve body are closer together than those
on the other end.
7. Lubricate new sealing rings with Parker Super O-ring
Lube (200006) and place in the ports of the pilot
valve.
8. Place the pilot valve onto the shift valve in the same
orientation as noted in Step 6 and screw in the fas-
teners. Torque in a figure-8 pattern in
1
8
-turn incre-
ments to 6.5 ft-lb (8.9 N-m). Make sure the spool
moves smoothly.
9. Insert the notched washer in its locating groove in
one end of the body and the spring in one solenoid
core. Screw the solenoid core into the pilot valve
body; being careful not to nick the o-ring. Tighten
with a wrench.
Repeat this step on the other end of the body.
10. Install the solenoid coils onto their cores, making
sure the locating pin on the solenoid coil end face
engages the hole in the valve body, and that the so-
lenoid coil connector is correctly oriented.
Place the o-rings on the cores and screw on the re-
taining knobs hand tight.
11. Reconnect the solenoid coil connectors and tighten
the screws. Make sure that the cable of the connec-
tors is on the right-hand side when viewed from the
front of the intensifier (i.e., with the intensifier mani-
fold behind the intensifier.)
If the reservoir was drained in Step 1, refill the
reservoir.
12. Remove the Out of Service tags from the main elec-
trical disconnects.
13. Run the pump unit at low pressure for 3–5 minutes
while checking for leaks. Remove tools, parts and
rags from the pump unit. The pump unit is ready for
operation.
Note : This service procedure introduces a small amount
of air into the hydraulic system which will purge auto-
matically on pump unit start-up.
© Flow International Corporation
M-390 | 63
CHAPTER 5
Servicing the Pump