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Crown RC 5500 series - Tilt Cylinder Bleeding and Flushing Procedures

Crown RC 5500 series
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CYLINDERS
Cylinders
360
M8.0-1055-014
01 Rev. 6/08
Tilt Cylinder Spacing Chart
4. Refer to Figure 19831. Place required spacers (1)
between the end cap (2) and drive axle mounting
plate (3) on the inside of the drive axle mounting
plate (3).
NOTE
Always install the thinner spacer 141414-002 closest to
the drive axle plate.
5. Loosen the lower bolt and nut (4) holding the tilt
position assist assembly and slide spacers behind
the nut. Retighten nut and torque to 12 Nm (9 ft lb).
Tilt Cylinder Bleeding and Flushing Proce-
dures
WARNING
Avoid high pressure fluids - escaping fluid under pres-
sure can penetrate the skin causing serious injury. Re-
lieve pressure before disconnecting hydraulic lines.
Tighten all connections before applying pressure.
Keep hands and body away from pin holes which eject
fluids under high pressure. Use a piece of cardboard or
paper to search for leaks. Do not use your hand.
Any fluid injected into the skin under high pressure
should be considered as a serious medical emergency
despite an initial normal appearance of the skin. There
is a delayed onset of pain, and serious tissue damage
may occur. Medical attention should be sought imme-
diately by a specialist who has had experience with this
type of injury.
Tilt hydraulic circuits need to be flushed after repair of
tilt cylinders and bled of all air. Before flushing and
bleeding of system inspect all hydraulic connections
and verify that all filters are installed and hydraulic fluid
levels are adequate for test. Hydraulic system must be
pressurized during the flushing and bleeding proce-
dures.
CAUTION
Do not attempt to bleed a line by cracking an o-ring
face seal fitting. This will result in damaging the o-ring
which then must be replaced to prevent hydraulic fluid
leakage.
Tilt Cylinder Spacing
Measured Gap Quantity of Spacers
mm in 141414-001 141414-002
8.45 - 8.1 0.33 - 0.32 1 3
8.0 - 7.2 0.31 - 0.29 1 2
7.1 - 6.3 0.28 - 0.25 1 1
6.2 - 5.4 0.24 - 0.21 1 0
Figure 19831
Crown 2007 PF15682-14 Rev. 6/08

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