HYDAC SB 600 - Manual (Page 5)

INNOVATIVE FLUID POWER 27
PN#02073469 / 07.14 / ACU1102-1326
Maintenance
M
O
Q
N
P
M Insert flat ring (item 15) into space between fluid port and shell. If it does not slide on
properly, recenter fluid port in opening. Next, insert O-ring by pressing with a blunt
flathead screwdriver (with rounded edges) at 90° intervals. Carefully, level O-ring onto seat.
Where applicable insert back-up ring (item 23) over O-ring with grooved surface
toward O-ring.
N Remove protective tape from fluid port threads. Insert spacer ring (item 17) with “lip”
placed in the shell. Thread on fluid port lock nut (item 18) and torque with spanner
wrench*. Place seal ring (item 20) on vent screw (item 19) install in fluid port and torque*.
O On gas side, remove loosely attached bladder stem lock nut (item 4) and position name
plate (item 8) . Reapply bladder stem lock nut (item 4) and torque*.
P Attach appropriate HYDAC Charging and Gauging Unit and apply proper gas precharge
(refer to HYDAC Charging and Gauging brochure #02068202) . Check bladder stem lock nut
(item 4) torque*.
Q Screw on valve seal cap (item 5) and torque*. Replace valve protection cap (item 6) .
*refer to torque table in section 2.1
WARNING!
HYDAC offers either a 7/8” - 14UNF gas valve body or M50x1.5 gas valve body depending on
accumulator size and pressure.
Never under any circumstances should a 7/8” gas valve body be used in an accumulator
assembly with a shell having a ~ ø 2” opening in the shell. Do not add spacers of any kind!
Never under any circumstances should a 2” gas valve body be used in an accumulator
assembly with a shell having a ~ø 7/8” opening in the shell. Do not add spacers of any kind!
Figure 1: 7/8” (22.3mm) gas valve body
in ~ш2” (~ш50.8mm) shell opening
Figure 3: 2” (50.8mm) gas valve body
in ~ш2” (~ш22.3mm) shell opening
Figure 2: 7/8” (22.3mm) gas valve body
in ~ш7/8” (~ш22.23mm) shell opening
Figure 4: 7/8” (50.8mm) gas valve body
in ~ш7/8” (~ш50.8mm) shell opening