HYDAC SB 600 - Manual (Page 8)

INNOVATIVE FLUID POWER 30
PN#02073469 / 07.14 / ACU1102-1326
Maintenance
5.3 Assembly
The interior of the shell must be absolutely free of any
contamination or debris prior to assembly.
Prepare bladder for installation by removing
valve seal
cap (item 5) , and gas valve core (item 3) . Purge all
residual air.
Lubricate interior of shell and exterior of bladder
with appropriate filtered fluid, using a fluid volume of
approximately 10% of total accumulator volume.
(Do not use water, it is not a lubricant) .
Different bladder compounds require different lubricants.
G Attach gas port adapter
(item 22) to bladder with gas
valve protruding through adapter opening. Loosely
screw bladder stem lock nut (item 4) onto gas valve to
keep gas port and bladder connected.
H Fold bladder (item 2) in half lengthwise and insert
through gas side opening. Make sure bladder is
stretched and not twisted when being inserted. Thread
pull rod onto gas valve to position gas port adapter.
I Place the anti-extrusion ring (item 24) over the pull rod
with the steel parts facing upward. Fold anti-extrusion
ring (item 24) in half and insert into shell. To do this, push
gas port adapter further into shell and then pull it back
through anti-extrusion ring. Slide gas port lock nut (item
31) over and pull rod with beveled surface facing away
from shell; loosely thread the gas port lock nut onto the
gas port adapter. Remove pull rod from gas valve.
J Insert gas valve core (item 3) and torque to 0.5 Nm
(0.4 lb-ft). Precharge bladder with 10 to 15 psi of dry
nitrogen to hold gas port adapter (item 22) in place while
completing assembly.
K Remove gas port lock nut (item 31) . Insert flat ring (item
28) into space between gas port and shell. If it does
not slide on properly, re-center gas port in opening.
Next, insert O-ring (item 29) by pressing with a blunt
flathead screwdriver (with rounded edges) at 90° intervals.
Carefully, level O-ring onto seat. Insert back-up ring
(item 30) over O-ring with grooved surface toward O-ring.
L Install spacer ring (item 17) . Thread on gas port lock
nut (item 31) with beveled surface facing away from shell
and torque with spanner wrench*. Torque* bladder stem
lock nut (item 4) .
M Attach HYDAC Charging and Gauging Unit (FPK
with adapter FPK/SB) and apply proper gas precharge
pressure (refer to HYDAC Charging and Gauging brochure
#02068202) . Check bladder stem lock nut (item 4)
torque 2) .
N Screw on valve seal cap (item 5) and torque*. Replace
valve protection cap (item 6) (if applicable) .
*refer to torque table in section 4.1.
G
M I
L H
K
J N