25
Important:
In case that the actuator or any of its part must be replaced, please follow the instructions of the
“Actuator Disposal”.
C.
Instruction for replacement of Dynamic seals
Warning:
If there are leaks in the pneumatic cylinder or a malfunction in the mechanical components, or in case of
scheduled preventative maintenance, the actuator must be disassembled and seals must be replaced
with reference to the disassembly section (from page no.
29
) and adopting the following procedure.
Note:
When the seals need to be replaced, it is necessary to check before assembly, that their seats are
clean and lubricated.
a)
Replacement of Piston seal: ( See Figure 1 )
For replacing piston seal proceed as described here below:
Warning:
Remember that a preloaded spring is included in the cylinder. (If SR Actuator)
•
Slowly unthread the screws (item 45) of the tie rods (item 40) in the proper sequence, then remove the
same screws with their washers (item 46).
•
Remove the end flange (item 32) from liner (item 43).
•
Remove the spring (item 53) from the liner bore (if SR Actuator)
•
Gradually remove the liner from head flange (item 25).
•
Remove the O-ring (item 28), and the guide slider (item 41) from piston (item 42). Carefully clean the
relative piston grooves.
•
Replace the seals and lubricate them with a grease film.
Taking care not to damage the seals, proceed with the reassembling as follows:
•
To reassemble the actuator, follow the disassembly in reverse order.
Carry out a few operations with the actuator, in order to check that the movement is regular and that
there are no leakages through the seals.
Содержание CAMERON LEDEEN VA Series
Страница 4: ...3 NOTES ...
Страница 14: ...13 LIFTING DEVICES MAXIMUM WORKLOAD Chains ...
Страница 15: ...14 LIFTING DEVICES MAXIMUM WORKLOAD Slings ...
Страница 16: ...15 ...
Страница 17: ...16 ...
Страница 27: ...26 Figure 1 VA0 MODEL HEAD FLANGE INTEGRATED WITH FRAME Figure 2 ...
