National Crane 600H, Руководство по обслуживанию

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NATIONAL CRANE
08-19-2022 Control # 092-13
7-11
600H SERVICE MANUAL OUTRIGGERS
7
Removal
1. Check that the jack cylinder is fully retracted and the
float removed.
2. On the jack cylinder end of the beam, remove the side
wear pad set screw in the outrigger box.
3. Back off the side wear pad.
4. Extend the outrigger beam slightly so that a lifting strap
can be attached to the outrigger beam.
NOTE: Do not use chains on the outrigger beam because
chains can nick and/or gouge the bottom of the
outrigger beam.
5. Unbolt and remove the end plate.
6. Tag and remove the hydraulic hoses connected to the
extension cylinder.
7. Remove the anchor bolts that secure the barrel end of
the extension cylinder to the outrigger box.
8. Lower the base of the extension cylinder to the bottom of
the outrigger beam.
9. Remove the wear pad set screws in the bottom of the
outrigger beam and back off the bottom wear pads until
about 0.25 in (6.4 mm) is protruding. This keeps the
beam off of the bottom of the outrigger box.
10. Place blocking material under the outrigger beam.
11. Pull the outrigger beam out of the outrigger box with the
lifting device.
12. Position the outrigger beam on the blocking material.
Inspection
Inspect the outrigger beam for bends, evidence of cracks, or
other damage. Check the outrigger beam internally for
hydraulic fluid, which may indicate a leaking cylinder, loose
connection, or damaged hydraulic line.
Installation
1. Apply grease (EP-MPG) to the bottom of the outrigger
beam.
2. Screw the bottom wear pads on the outrigger box in until
about 0.25 in (6.4 mm) is protruding. This keeps the
beam off of the bottom of the outrigger box.
3. Slide the beam into the outrigger housing.
4. Adjust the wear pads as described in Wear Pad
Adjustment pg 7-14.
5. Retract the outrigger.
6. Align the base of the extension cylinder barrel up with
the holes in the end of the outrigger box.
7. Bolt the extension cylinder barrel to the end of the end
outrigger box.
8. Reconnect the hydraulic lines as per removal tags.
EXTENSION CYLINDER
The purpose of the extension cylinder is to extend and
retract the outrigger beam.
Removal
1. Extend the outrigger enough to expose the access hole
on top of the outrigger beam (Figure 7-13).
2. Remove the end plate from the outrigger box.
3. Remove and tag the hydraulic lines at the barrel end of
the outrigger beam (Figure 7-12).
4. Remove the extension cylinder anchor bolts and lower
the extension cylinder to the bottom of the outrigger box.
5. Remove the keeper from the keyhole (Figure 7-13) and
slide the extension cylinder rod out of the keyhole.
6. Slide the extension cylinder out from the outrigger beam
and disconnect the jack cylinder hydraulic hoses.
NOTE: The hydraulic hoses are removed with the
extension cylinder. Be careful not to damage the
hydraulic hoses.
FIGURE 7-12
Anchor Bolts on
Extension Cylinder Barrel
Beam
Extend
Jack
Extend
Beam/Jack
Retract
Outrigger Beam
REFERENCE ONLY