9. Remove and discard the seal ring. The seal ring is a
wear item and is replaced at every seal change.
10. Clean the plunger and inspect for damage. The
plunger must have a smooth surface with no
scratches, pits, or other damage.
Note:
If the plunger is damaged, it must be re-
placed. Wrap the cylinder and end cap in a lint-free
material and set aside. See
Hydraulic Oil Cylinder,
Piston, Plunger and End Bell
for the replacement
procedure.
When the plunger has been replaced, continue with
Step 11.
11. Clean and inspect all four components of the
high-pressure seal tool kit, especially those surfaces
that will contact the seal, backup sleeve, and cylin-
der. Smooth off any rough edges.
12. Place the high-pressure cylinder on a clean, dry
shop towel. Using a mallet, tap the shouldered end
of the seal installation tool into the end of the cylin-
der to remove the seal located in the opposite end.
Repeat to remove the seal in the other end of the
cylinder.
13. Remove the seal backup sleeve.
14. Carefully clean the high-pressure cylinder and
backup sleeve.
Note:
High-pressure components must be cleaned
in a non-residue solvent and allowed to air dry be-
fore reassembly.
15. Inspect all surfaces of the cylinder for damage or fa-
tigue. Inspect the inside surface by looking through
the cylinder angled toward a brightly lit white sur-
face. If there is any damage to the interior, discard
and replace the cylinder.
CAUTION
Do not reassemble any intensifier
that has a damaged cylinder.
16. Inspect the sealing surfaces of the cylinder for rough-
ness or damage. Minor build-up or erosion can be
polished out by hand if done evenly. There must be
no nicks or scratches on any sealing surface.
17. Inspect the seal backup sleeve for any signs of dam-
age. The sleeve is a non-stressed part.
16 | M-310
© Flow International Corporation
ESL Intensifier
