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8-10
2000-OSM, F1
15. Remove the
15 Belleville springs
from the
body
.
16. Inspect the
body O-rings
for visible imperfections. If imperfections are found, remove the
body
O-rings
from the
body
and
piston
.
17. Unscrew the
piston rod
from the
piston
and extract the
stem assembly
from the
piston rod
.
18. Inspect the
piston rod O-ring
for visible imperfections. If imperfections are found, remove the
piston rod
O-ring
from the
piston rod
.
19. Unscrew the
sleeve
from the
body
.
20. Inspect the
sleeve O-ring
for visible imperfections. If imperfections are found, remove the
sleeve
O-ring
from the
sleeve
.
Reassembly on the Workbench
NOTE
In all steps the lubricant used is High Vacuum Grease, ABB part number 006904-1.
1. Clean
the
seals
with acetone and air dry them.
2. Clean
the
sample chamber
with acetone and air dry it.
3. Lightly lubricate the
sleeve O-Ring
and the sleeve threads, internal threads and bore of the
body
with High Vacuum Grease.
4. Install
the
sleeve O-ring
onto the
sleeve
.
5. Screw
the
sleeve
into the
body
until the bottom of the sleeve grooves is flush with the ears on
the back of the body.
6. Lightly lubricate the
piston rod O-ring
and the threads of the
piston rod
.
7. Install
the
piston rod O-ring
onto the
piston rod
. Do not allow grease to enter the small hole
through the center of the piston.
8. Insert
the
stem
into the rear of the
piston rod
.
9. Screw
the
piston rod
into the
piston
and tighten to 27-30 in-lb. Do not overtighten or bend the
rod or stem! Do not allow grease to contact the stem.
10. Lightly lubricate the
body O-rings
.
11. Install the
body O-rings
onto the
body
and the
piston
.
12. Insert the
piston
and the
piston rod
into the
sleeve
, being careful not to cut the O-ring. Fully
insert the
piston
until it contacts the stops.