Steris Amsco 3085 SP Maintenance Manual Download Page 116

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7-11

764332-898

4. Lash can occur in any of four bearings; however,

only certain combinations produce rotational lash:
all four bearings, any three bearings, two head-end
bearings or two foot-end bearings.

5. Turn socket head cap screw until lash is removed

from bearing, then back it off about 1/16 of a
revolution.

6. Check column motion while raising and lowering.

It should move up and down freely, with no
sticking, minimal bearing lash and uniform speed.
If problems are encountered, repeat

Steps 3, 4 and 5

NOTE: Do not remove all of the column lash or
inadvertently make the column too tight, creating
excessive loads on the bearings and producing premature
bearing failure. Removing all lash could also produce a
sticking condition on the column so that it will not lower
after remaining at one height for a period of time.

7.17 HYDRAULIC CYLINDER

REPLACEMENT

Important:

Holding check valves are located on the column

manifolds, not in the cylinders.

7.17.1 Floor Lock, Foot End, Right (Looking At

Base From Foot-End)

NOTE: The numbers in parentheses () refer to items found
on Figure 2 located in Illustrated Parts Breakdown (refer to
Tab) unless otherwise noted.

7.17.1.1 Removal

1. Remove shroud as described in

2. Unlock (raise) floor locks so that there is no pressure

on them.

3. Disconnect all hose fittings from cylinder body.

NOTE: Install clean cap on end of hose to prevent
contamination.

4. Use a hammer and punch to remove pivot pin or

remove O-rings where used.

5. Unscrew cylinder rod from shaft and link assembly

using an Allen wrench.

6. Lift cylinder away from base.

7. Remove fittings from cylinder.

8. Wipe fittings and put them on a lint-free cloth until

reuse.

7.17.1.2 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

(15, 16). Reinstall pivot pin and retaining rings (13,
14).

3. Reattach hoses. Tighten retaining nuts on hose

fittings.

4. Operate floor lock several times and check for leaks.

5. Adjust according to

7.17.2 Floor Lock, Foot End, Left (Looking At

Base From Foot-End)

NOTE: The numbers in parentheses () refer to items found
on Figure 2 located in Illustrated Parts Breakdown (refer to
Tab) unless otherwise noted.

7.17.2.1 Removal

1. Remove shroud as described in

2. Unlock (raise) floor locks so that there is no pressure

on them.

3. Detach hydraulic hoses from two elbow fittings on

cylinder noting punch of each hose.

4. Remove power supply assembly as outlined in

5. Use a hammer and punch to remove pivot pin or

remove O-rings where used.

6. Unscrew cylinder rod from shaft and link assembly

using an Allen wrench.

7. Remove cylinder from base.

8. Remove fittings from cylinder.

9. Wipe fittings and put them on a lint-free cloth until

reuse.

7.17.2.2 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.

WARNING – PERSONAL INJURY AND/OR
EQUIPMENT DAMAGE HAZARD: Breaking
hydraulic fittings may cause associated
table sections to fall and excessive fluid
may flow from the fitting.