Steris Amsco 3085 SP, Maintenance Manual

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7-12
764332-898
2. Tighten cylinder rod into shaft and link assembly
(15, 16). Reinstall pivot pin and retaining rings (13,
14).
3. Reattach hoses. Tighen retaining nuts on hose
fittings.
4. Operate floor lock several times and check for leaks.
5. Adjust according to S
ECTION
7.11, F
LOOR
L
OCK
L
INKAGE AND
S
WITCH
A
DJUSTMENT
.
7.17.3 Floor Lock, Head End
7.17.3.1 Removal
1. Remove shroud as described in S
ECTION
7.4,
S
HROUD
R
EMOVAL
/ R
EPLACEMENT
P
ROCEDURES
.
2. Unlock (raise) floor locks so that there is no pressure
on them.
3. To remove this cylinder it is necessary to remove
counterweight from table base.
4. Remove two screws and lockwashers holding
counterweights to table base.
5. Remove counterweight from table base.
6. Remove all hydraulic hoses.
7. Use a hammer and punch to remove pivot pin or
remove O-rings where used.
8. Unscrew cylinder rod from shaft and link assembly
using an Allen wrench.
9. Remove cylinder from base.
10. Remove fittings from cylinder.
11. Wipe fittings and put them on a lint-free cloth
until reuse.
7.17.3.2 Replacement
NOTE: Always replace sealing washers.
1. Remove new cylinder from plastic bag and install
fittings (from old cylinder) on new cylinder
orienting them as closely as possible to correct
position.
2. Tighten cylinder rod into shaft and link assembly.
Reinstall pivot pin.
3. Reattach hoses. Tighten retaining nuts on hose
fittings.
4. Operate floor lock several times and check for leaks.
5. Reinstall counterweight.
7.17.4 Back Section Cylinders
NOTE: The numbers in parentheses () refer to items found
on Figure 12, Figure 13 and Figure 17 located in Illustrated
Parts Breakdown (refer to Tab) unless otherwise noted.
7.17.4.1 Removal
1. Insert a 2 x 4" between back and seat section and
lower back section until board is wedged in place.
2. Remove back section tabletop.
3. Remove side rail.
4. Remove kidney-bridge linkage as follows:
a. Tap out groove pin (Figure 12, 36) from
universal joint (Figure 17, 19) connecting
kidney bridge handle shaft to kidney bridge
shaft assembly.
b. Remove two round head screws and
lockwashers (Figure 12, 34 and 35) holding
brass support block (Figure 17, 18) in place.
c. Remove two socket head cap screws and
lockwashers (Figure 12, 32 and 33) from kidney
bridge linkage block (Figure 17, 16).
d. Lift linkage assembly up and out of way.
5. Remove setscrew (Figure 12, 26) from underside of
saddle block.
6. Remove pivot pin (Figure 12, 25) from saddle block.
7. Remove two button plugs and dowell pins
(Figure 13, 6 and 7) holding cylinder to back section
casting.
8. Remove ground lead.
9. Disconnect and cap all three hydraulic hoses,
marking them for reattachment.
10. Lift cylinder up and out of casting.
11. Wipe any fluid that may have leaked from hoses/
fittings.
7.17.4.2 Replacement
NOTE: Always replace sealing washers.
1. Place new cylinder into back section casting.
2. Attach all three hoses, ensure hoses are connected
to appropriate port as marked during removal.
NOTE: When attaching hoses, hold nut on hard line
coming from cylinder and tighten fitting. Do not
overtighten.
CAUTION – POSSIBLE EQUIPMENT
DAMAGE: Do not remove back section
cylinder without supporting back section.
Limit switch maybe damaged if back
section drops too much.