Maintenance
54
8/4/11
Operation Manual - SP 305
7. Find the swivel nut (Figure 41) on the charge valve
assembly. Screw the swivel nut onto the
accumulator gas valve. Tighten to 10–15 in./lb.
8. After the swivel nut is attached, screw the T-handle
(Figure 39) in (clockwise) three (3) full turns. This
presses a pin into the gas valve and opens it. Read
the pressure on the charge valve assembly gauge
(Figure 42) before you attach the nitrogen bottle to
the charge valve assembly. The pressure should
read 103 bar (1500 PSI). If there is no reading on
the gauge, turn the T-handle in (clockwise) one
more full turn.
NOTE!
If the T-handle is turned in (clockwise) more
than 4 full turns from the full
counterclockwise position, it may damage
the accumulator gas valve.
• If no adjustment is necessary, skip to step #16.
• If pressure is too high, skip to step #13.
• If pressure must be added, proceed to step #9.
.
Figure 41
Attach swivel nut to
accumulator gas valve
200
150
100
500
1000
1500
2000
2500
50
0
bar
PSI
HYDAC bladder
accumulator
Swivel nut
Valve stem
charge assy/ontoaccum.eps
Figure 42
Read nitrogen pressure
on gauge
200
150
100
500
1000
1500
2000
2500
50
0
bar
PSI
Spec. 100 bar (1450 PSI)
read gauge.eps
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