8-32 Published 08-25-09, Control # 077-04
UNDERCARRIAGE RT9130E SERVICE MANUAL
is connected to the solenoid valve bank to prevent
damage.
3. Push the cylinder into the outrigger beam. Align the
cylinder rod with the clevis in the beam. Apply anti-seize
compound to the clevis pin and secure in place with the
clevis pin and cotter pin.
4. Install the outrigger beam. Refer to OUTRIGGER BEAM
- INSTALLATION in this section. Verify no stabilizer
cylinder hose will be trapped by full outrigger beam
retraction.
Functional Check
1. Activate the hydraulic system; extend and retract the
outrigger.
2. Observe the operation of the outrigger beam.
3. Check the hydraulic connections for any evidence of
leakage.
Stabilizer Cylinder
Description
Four stabilizer cylinders are used on the crane, one at the
end of each outrigger beam. The stabilizer cylinders provide
the force for the outrigger beam’s vertical movement. The
cylinder weighs approximately 100 kg (220.4 pounds).
Maintenance
NOTE: Refer to CYLINDERS in Section 2 - HYDRAULIC
SYSTEM for Disassembly and Assembly of the
cylinders.
Removal
1. Extend the outrigger beam slightly for improved access
to the stabilizer cylinder; shut down the engine.
2. Tag and disconnect the hydraulic hoses from the
stabilizer cylinder. Remove the fittings from the ports.
Cap or plug all openings.
3. Remove the cylinder cap.
4. Place a jack capable of supporting the weight of the
stabilizer cylinder at the base of the cylinder barrel. Jack
up the cylinder just enough to relieve any pressure on
the cylinder retaining pin.
5. Remove the cotter pins securing the cylinder retaining
pin and remove the cylinder retaining pin and cylinder
cap retaining bracket.
6. Jack the stabilizer cylinder up just enough to insert the
retaining pin back into the cylinder. Insert the retaining
pin into the lugs on the cylinder and secure the pin in
place with the cotter pins.
7. Fasten a nylon strap onto the cylinder retaining pin and
use an adequate lifting device to lift the stabilizer
cylinder out of the tube on the beam assembly.
Installation
1. Apply grease (EP-MPG) to the ID of the stabilizer
cylinder support tube.
2. If removed, install wear ring in groove in bottom of
support tube and in groove at top on stabilizer cylinder.
3. Place a jack beneath the cylinder tube on the outrigger
beam. Using the same method as described under
REMOVAL, lower the stabilizer cylinder into the cylinder
tube on the outrigger beam until the retaining pin is just
above the tube. Position the jack so that it will support
the cylinder in this position. Remove the lifting device
from the cylinder.
4. Remove the retaining pin and cotter pins from the
cylinder.
5. Lower the jack until the holes in the cylinder rod align
with the holes in the outrigger beam.
6. Apply anti-seize compound to the retaining pin. Secure
the cylinder and cylinder cap retaining bracket to the
support tube with the retaining pin and cotter pins.
7. Install the cylinder cap.
8. Install the fittings in the cylinder ports and connect the
hoses as tagged during removal. Verify the piston side of
the stabilizer cylinder is connected to the solenoid valve
bank to prevent damage. Verify no stabilizer cylinder
hose will be trapped by full outrigger beam retraction.
Functional Check
1. Activate the hydraulic system.
2. Observe the operation of the stabilizer cylinder. If
hydraulic lines are reversed, stop immediately and
connect lines properly per instructions. Verify no
stabilizer cylinder hose is trapped by full outrigger beam
retraction; if any is, stop immediately and install lines
properly to avoid trapping.
3. Check the hydraulic connections and hoses for evidence
of leakage. Make repairs as needed.
CAUTION
Use a nylon strap to remove the cylinder. This will ensure
the retaining pin is not damaged.
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