FMC M12-HD, Руководство по эксплуатации и техническому обслуживанию

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F M C M 1 2 - H D O P E R A T I O N A N D M A I N T E N A N C E M A N U A L
10
•
Use a 1-1/8” socket wrench to remove each of
the cylinder clamp hex nuts (46) and
washers (47).
•
Slide each cylinder clamp (48) out over the end
of the cylinder (49) and remove.
•
The remaining components of the piston-
cylinder assembly can now be removed from
the pump and taken to a workbench for further
disassembly and inspection. It may be
necessary to work the piston-cylinder assembly
from side to side while pulling back to free it
from the fluid cylinder counterbore if any corrosion has formed between parts. Cylinder o-
rings (50) may come out with the assembly or they can often stick in the fluid cylinder
counterbore.
•
Push the piston assembly out through the back of the cylinder.
•
Place the flats provided on the piston extension (40) in a bench vice. Remove the piston
nut (44) and dissemble the remaining components.
•
Discard the piston (42), piston o-ring (45), and cylinder o-ring (50). Clean, inspect, and
save the remaining components so they can be reinstalled later. Take extra care to
inspect the bore of the piston cylinder (49). The ID of the cylinder must be smooth and
free of grooves or other defects for maximum service life of the pistons.
•
The complete set of piston and cylinder components is shown below.
40 Piston Extension Rod
41 Piston Holder
42 Piston
43 Piston
Washer
44 Piston Assembly Nut
45 Piston O-Ring
46 Cylinder Hex Nut
47 Cylinder Washer
48 Cylinder Clamp
49 Piston Cylinder
50 Cylinder O-Ring
51 Cylinder Stud
52 Crosshead Extension
53 Deflector Shield