Flow 94i-D, Руководство пользователя

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Replacing a shift sensor assembly
Service steps
1. Shut down the system.
WARNING
Place the main electrical disconnects in the OFF
position and bleed down all high-pressure lines.
Place Out of Service tags on the main electrical
disconnects and lock them out. Failure to do so can
result in equipment damage or injury to personnel.
2. Disconnect the shift sensor assembly cable from the
integrated shift module cable extension.
3. Remove the two shift sensor housing cap screws
(
5
32
-in. socket), then remove the housing from the
end bell.
4. Remove the spring and actuating plunger. Inspect
the spring for wear and for broken coils. The spring
should have a free length of approximately 1.5 in.
(38 mm).
Inspect the actuator plunger assembly for a chipped
magnet, loose retaining screw, or broken spring.
The plunger should be 2.23 in. (56.6 mm) long.
Replace components if necessary.
5. Remove the actuating pin. You will need the shift
pin tool (002228-1) and a 6 in. (150 mm) long piece
of insulated electrical wire that fits the shift pin tool
groove closely. Strip the insulation at one end for
¼ in. (6 mm) and fray out the wires.
Lubricate the o-ring of the shift pin tool and insert
the tool into the intensifier shift sensor housing bore,
o-ring end first. Pulling out the tool creates suction,
which pulls the pin into the main bore. Remove it
using the frayed end of the wire.
6. Inspect the actuating pin. It should be approximately
1.15 in. (29.2 mm) long, have a shaft diameter of
0.080–0.085 in. (2.03–2.16 mm), and have no
measurable bend. Replace if necessary.
7. Inspect the actuator bore in the end bell. It must be
polished and have no gouges, burrs, or other surface
disruptions.
8. Inspect the sensor housing o-ring and backup ring
for wear and damage. Replace as necessary.
Lubricate the backup ring and o-ring with Parker
Super O Ring Lube (200006). Install the backup ring
first and then install the o-ring on the outer, end bell
end of the housing.
9. Reinsert the actuating pin into the end bell:
a. Place the pin in the groove of the shift pin tool
with the pin head toward the o-ring.
b. Insert the tool into the shift sensor bore with the
o-ring end facing out. When the tool is fully en-
gaged, use the wire to apply pressure against the
pin. Rotate the tool in the bore until the pin
lines up with the actuating pin bore. The pres-
sure will force the actuating pin into the bore.
c. When the pin is correctly installed, hold it in po-
sition with the wire and remove the tool.
10. Reinsert the actuating plunger into the bore with the
magnet end outermost.
11. Reinstall the spring.
12. Insert the shift sensor housing into the end bell.
Reinstall the two housing cap screws and torque to
10 ft-lb (14 N-m).
13. Reconnect the shift sensor cable to the shift module
cable extension.
14. Make sure all shift sensors are in place.
15. Remove the Out of Service tags from the main elec-
trical disconnects.
Note: This service procedure introduces a small
amount of air into the hydraulic system. It will purge
automatically on pump unit start-up.
16. 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.
68 | M-390
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HYPERJET™ 94i-S AND 94i-D PUMPS