Flow 94K HYPERPRESSURE, Руководство пользователя

Страница: 54 / 82

21. Apply clean hydraulic oil or Parker Super
O-ring Lube to the new backup ring. Locate
the molding marks, and install the backup ring
so the molding marks face the end bell. Lubri-
cate the new o-ring and place it in the groove
on top of the backup ring. The o-ring must be
outside of the backup ring, facing the low-pres-
sure cylinder.
Reinstall the o-ring removed in Step 18 from
the high-pressure cylinder side of the end bell.
22. Repeat Steps 20–21 for the other end bell,
then set both end bells aside and cover with a
lint-free cloth.
Piston and plungers
Disassemble the piston and plungers for any of
these reasons:
•
One or both of the plungers need to be re-
placed.
•
The piston needs to be replaced.
•
A plunger has excessive lateral movement rela-
tive to the piston biscuit. (Excessive lateral
movement is anything over
1
8
in. off center line
at the plunger tip.)
If any of the above apply, continue with Step 23.
Otherwise, skip to Step 29.
23. Remove the snap ring and retainer (blow air down be-
tween the plunger and the retainer bore to loosen the re-
tainer). Remove the plunger by hand.
•
Repeat for the other plunger. Set plungers aside.
24. Remove the T-seals from the piston. Do not scratch the
piston sealing surfaces.
25. Clean all parts of the piston assembly. Make sure oil, dirt,
and burrs are removed from all surfaces.
Notes:
•
Inspect the plungers carefully. Nicks, scratches, or
pits will cause premature failure of high-
pressure seals.
•
Plungers cannot be reworked in the field.
Contact Flow Technical Service for information on
factory rework of plungers.
•
Inspect the piston for cracks; replace as needed.
54 | M-376
© Flow International Corporation
94K HYPERPRESSURE INTENSIFIER