Steris Hausted Horizon Series User manual

OPERATING MANUAL
Hausted®Horizon®Series
Model 402EMB
Basic Transport Stretcher
(02/26/02) 076514

i
Table of Contents Operator Manual 076514
A WORD FROM STERIS CORPORATION
This manual contains important information on proper use and maintenance
of the Hausted Basic Transport Stretcher. Allpersonnelinvolvedintheuse
and maintenance of this equipment must carefully review and comply
with the warnings, cautions and instructions contained in this manual.
These instructions are important to protect the health and safety of personnel
operating a Hausted Basic Transport Stretcher and should be retained in a
conveniently accessible area for quick reference.
Complete instructions for uncrating and connecting utilities, as well as
equipment drawings, have been furnished. If missing, contact STERIS for
replacement copies, giving the serial number and model numbers of the unit.
STERIS carries a complete line of accessories for use with this stretcher. A
STERIS representative will gladly review these with you.
The Hausted Basic Transport Stretcher is intended for use in patient treat-
ment, transport or recovery.
Indications for Use
A thorough preventive maintenance program is essential to safe and proper
unit operation. This manual contains maintenance schedules and procedures
which should be followed for satisfactory equipment performance.
You are encouraged to contact STERIS concerning our comprehensive
Annual Maintenance Agreements. Under the terms of these agreements,
preventive maintenance, adjustments, and replacement of worn parts are
done on a scheduled basis to assure equipment performance at peak
capability and to help avoid untimely or costly interruptions. STERIS maintains
a global staff of well equipped, factory-trained technicians to provide this
service, as well as expert repair services. Please contact your STERIS
representative for details.
Service Information
A listing of the safety precautions to be observed when operating and
servicing this equipment can be found in Section 1 of this manual. Do not
operate or service the equipment until you have become familiar with this
information.
Any alteration of this equipment not authorized or performed by STERIS
Engineering Service which could affect its operation will void the warranty,
could adversely affect sterilization efficacy, could violate national, state, and
local regulations, and could jeopardize your insurance coverage.
Advisory
©2002, STERIS Corporation. All rights reserved. Printed in U.S.A.

ii
076514 Operator Manual Table of Contents
EC Authorized Representative
STERIS Limited
STERIS House
Jays Close
Viables
Basingstoke
Hampshire
RG22 4AX
UNITED KINGDOM
Manufactured by:
STERIS Corporation
2720 Gunter Park East
Montgomery, AL 36109 • USA
TEL: [phone]
FAX: [phone]
Equipment not suitable for use
in the presence of a flammable
anesthetic mixture with air or
oxygen or nitrous oxide.
Manufactured
Exclusively by
STERIS Corporation
Montgomery, AL
ISO 9001
EN 46001
ISO 13485
Certified
The base language of this document is
ENGLISH. Any translations must be
made from the base language document.
STERIS Offices Worldwide
Canada 800 661 3937
Germany 49 22 33 69990
Hong Kong 852 2 563 3623
Italy 39 01 41 590429
Japan 81 78 321 2271
Korea 82 2 517 1517
Latin America 305 442 8202
Singapore 65 841 7677
Spain 34 91 658 5920
United Kingdom 44 1256 840400
www.steris.com

iii
Table of Contents Operator Manual 076514
TABLE OF CONTENTS
Section Title Page
1 LISTING OF WARNINGS AND CAUTIONS ........................................ 1-1
2 UNPACKING INSTRUCTIONS .......................................................... 2-1
3 OPERATING INSTRUCTIONS ........................................................... 3-1
3.1 Stretcher Specifications ............................................................................................... 3-1
3.2 Stretcher Features, Warnings – Cautions and Proper Operation ................................ 3-2
3.3 Braking And Steering Operation.................................................................................. 3-4
3.3.1 Applying The Brakes ............................................................................................ 3-4
3.3.2 Releasing the Brakes ........................................................................................... 3-4
3.3.3 Applying the Steering Lock/Fifth Wheel ............................................................... 3-4
3.3.4 Releasing the Steering Lock/Fifth Wheel .............................................................. 3-4
3.4 Fowler Backrest Operation .......................................................................................... 3-5
3.4.1 Raising the Backrest ............................................................................................ 3-5
3.4.2 Lowering the Backrest .......................................................................................... 3-5
3.5 Retracto Rail Operation ............................................................................................... 3-5
3.5.1 Raising the Rail ..................................................................................................... 3-5
3.5.2 Placing the Rail at Half Height .............................................................................. 3-5
3.5.3 Lowering the Rail .................................................................................................. 3-5
3.6 Permanently Mounted IV Rod Operation ..................................................................... 3-6
3.6.1 Putting I.V. Rod in Up Position .............................................................................. 3-6
3.6.2 Extending I.V. Rod ................................................................................................ 3-6
3.6.3 Retracting I.V. Rod ................................................................................................ 3-6
4 TROUBLESHOOTING GUIDE ........................................................... 4-1
4.1 Theory of Operation ..................................................................................................... 4-1
4.1.1 Caster Braking System ......................................................................................... 4-1
4.1.2 Center Track Steering (If Equipped) ..................................................................... 4-1
4.1.3 Retracto Rail ......................................................................................................... 4-1
4.1.4 Pneumatic Fowler Backrest .................................................................................. 4-1
4.2 Operator Trouble Shooting Guide ................................................................................ 4-2
4.3 Service Troubleshooting (For Service Technicians) ..................................................... 4-3
5 RECOMMENDED PREVENTIVE MAINTENANCE .............................. 5-1
5.1 Recommended Cleaning Instructions ......................................................................... 5-1
5.2 Service Preventive Maintenance Checklist .................................................................. 5-2
5.2.1 Reference Chart Intended For Service Technicians ............................................. 5-2
5.3 Caster Braking System Maintenance .......................................................................... 5-3
5.3.1 Adjusting The Caster Brakes................................................................................ 5-3
5.3.2 Adjusting The Caster Steer-Lock .......................................................................... 5-3
5.3.3 Removing/Replacing Casters ............................................................................... 5-3
5.4 Fowler Backrest And Retracto Rail Maintenance ........................................................ 5-4
5.4.1 Adjusting The Gas Spring .................................................................................... 5-4
5.4.2 Removing/Replacing The Gas Spring .................................................................. 5-4
5.4.3 Removing/Replacing The Rail .............................................................................. 5-5
5.4.4 Removing/Replacing The Rail Latch .................................................................... 5-5
continued on next mpage

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076514 Operator Manual Table of Contents
Section Title Page
6 RECOMMENDED OPTIONAL ACCESSORIES ................................... 6-1
7 RECOMMENDED REPLACEMENT PARTS ........................................ 7-1

1-1
Listing of Warnings and Cautions Operator Manual 076514
The following is a listing of the safety precautions which must be observed when operating and servicing this equipment.
WARNINGS indicate the potential for danger to personnel, and CAUTIONS indicate the potential for damage to
equipment. These precautions are repeated (in whole or in part), where applicable, throughout the manual.
WARNING–LACERATION HAZARD:
When cutting bands always use a tool specifically designed for that purpose. This will help to avoid personal
injuries frequently incurred when bands are cut and tension released.
WARNINGS – PERSONAL INJURY:
Do not sit on end – tipping may occur.
Be sure I.V. rod is inserted completely into socket up to the arrow before applying any load.
See Section 3 for the following Warnings:
WARNINGS – CAUTIONS AND PROPER OPERATION:
The stretchers have a warning label located near the head end stating: Maximum patient weight 226 Kilograms
(500 lbs).
Patient entry, egress and transfer should always be done with the caster braking system locked.
The caster braking system should always be locked when patient is not in transport.
The caster braking system should always be locked and patient side rails up when patient is left unattended.
Always ensure that the side rail is locked before leaving patient unattended.
LISTING OF WARNINGS AND CAUTIONS 1

2-1
Unpacking Instructions Operator Manual 076514
UNPACKING INSTRUCTIONS 2
IMPORTANT: Report any shipping damage immediately! Inform shipper of
any damages – leave carton intact. Leave the Horizon Stretcher in the receiving
area until inspection is complete.
Your Hausted Stretcher has been carefully packaged at our manufacturing
plant to ensure safe shipment to you medical facility. There are several
procedures you must follow to put your new Horizon Stretcher into service.
These procedures only take a few minutes to complete and are required to
ensure proper operation of the Horizon Stretcher.
Step 1 – Cut the two metal bands around the shipping carton.
Step 2 – Remove the top half of the carton and cut one side of the bottom half.
Step 3 – Remove the Horizon Stretcher from the carton. Cut the metal bands
from around the stretcher.
Step 4 – Check to see if all features of the stretcher work properly. If all
features work properly, go to step 5. If any of the features of the
Horizon Stretcher do not work properly, call STERIS for service.
Step 5 – Clean the Horizon Stretcher using a mild detergent to remove any dirt
accumulated during shipment.
Step 6 – Place the stretcher into service.
WARNING – LACERATION
HAZARD: When cutting
bandsalwaysuseatoolspe-
cifically designed for that
purpose. This will help to
avoid personal injuries fre-
quently incurred when
bands are cut and tension
released.

3-1
Operating Instructions Operator Manual 076514
3
OPERATING INSTRUCTIONS
3.1 Stretcher
Specifications
WARNING – PERSONAL IN-
JURY HAZARD: Maximum
patient weight 226 Ki-
lograms (500 lbs).
NOTE:Alldimensionsarespecifiedin
inches. All dimensions are +/- .375.
STERIS reserves the right to change
specificatioins without notice.

3-2
076514 Operator Manual Operating Instructions
3.2 Stretcher
Features,
Warnings – Cautions
and Proper
Operation
WARNINGS – CAUTIONS
ANDPROPEROPERATION:
A- Thestretchers havea warn-
ing label located near the
headend stating:Maximum
patient weight 226 Kilo-
grams (500 lbs).
B- Patient entry, egress and
transfer should always be
done with the caster brak-
ing system locked.
C- The caster braking system
should always be locked
when patient is not in trans-
port.
D- The caster braking system
shouldalwaysbelockedand
patient side rails up when
patient is left unattended.
E- Always ensure that the side
rail is locked before leaving
patient unattended.

3-3
Operating Instructions Operator Manual 076514
3 POSITION SIDE RAILS
See Warnings D and E
See Warnings B, C and D
See Warnings D and E

3-4
076514 Operator Manual Operating Instructions
The four wheel central braking system is applied by depressing the red pedal
on the head or foot ends (head end shown) of the stretcher (Figure 3-1). To fully
engage the brakes, the pedal should be pressed to approximately 45°. All four
caster wheels should be locked from swiveling and rotating.
3.3 Braking And
Steering Operation
3.3.1 Applying The Brakes
3.3.2 Releasing the Brakes Depress the green pedal at any of the four corners of the unit, until the pedal
is in a horizontal position (Figure 3-2). All four wheels should rotate and swivel
freely.
3.3.3 Applying the
Steering Lock/Fifth Wheel
From either the head or foot end, depress the green pedal downward into
locked position (Figure 3-3). Push the stretcher forward. Either both casters at
the foot end will lock into a non-swivel mode, or the optional fifth wheel will lower
and apply pressure to the floor. The steering lock or the fifth wheel will then
guide the stretcher along a straight path with minimal steering effort by the
attendant.
3.3.4 Releasing the
Steering Lock/Fifth Wheel
Depress the red pedal at either the head or foot end until the pedal is in a
horizontal position (Figure 3-2). All four wheels should rotate and swivel freely,
and/or the optional fifth wheel will retract.
Figure 3-2 Figure 3-3
Figure 3-1
CAUTION: the caster brake
systemshouldalwaysbeac-
tivated when unit is not in
transport.

3-5
Operating Instructions Operator Manual 076514
3.4 Fowler Backrest
Operation
3.4.1 Raising the Backrest Grasp the fowler backrest frame tube and the gas spring activating handle
from either side of the stretcher (Figure 3-4). Squeeze the handle and the tube
together and lift. Once the desired incline is achieved, release the handle.
NOTE:theamountofmanualliftingrequiredwillvarydependingonpatientsize,
the gas spring is intended only to assist you in lifting the patient.
3.4.2 Lowering the
Backrest
Grasp the fowler backrest frame tube and the gas spring activating handle
from either side of the stretcher (Figure 3-4). Squeeze the handle and the tube
together while supporting the fowler. Adjust the incline by either by slowly
lowering the patient or by pressing the fowler down. Release the handle once
desired incline is achieved.
NOTE:theamountofmanualsupportingrequiredwillvarydependingonpatient
size, the gas spring is intended only to assist you in lowering the patient.
Figure 3-4
3.5 Retracto Rail
Operation
CAUTION: Always be sure
rail is locked in the full and
uprightpositionbeforeleav-
ing the patient unattended.
3.5.1 Raising the Rail Grasp the rail top cap in the middle of the rail (Figure 3-5) and lift.
3.5.2 Placing the Rail at
Half Height
Grasp the rail, lift up on the red trigger under the litter top (Figure 3-6) while
lowering the rail. When rail starts to move down release trigger. Lower rail until
it locks into half height position.
Figure 3-5 Figure 3-6
3.5.3 Lowering the Rail Grasp the rail. Lift up on the red trigger under the top (Figure 3-6), while
lowering the rail. Hold up on the rail trigger until the rail is all the way down.

3-6
076514 Operator Manual Operating Instructions
3.6.3 Retracting I.V. Rod Press button located in the plastic housing (Figure 3-9) and lower I.V. rod until
desired height is achieved. Release button to hold desired position. Repeat
process with second housing as required.
Figure 3-9
3.6 Permanently
Mounted IV Rod
Operation
WARNING– PERSONAL IN-
JURY HAZARD: Be sure I.V.
rod is inserted completely
intosocket, uptothe arrow,
before applying any load.
3.6.1 Putting I.V. Rod in Up
Position
Grasp I.V. rod and rotate upward until it stops (Figure 3-7). Push down on I.V.
rod until it slides firmly into the socket.
3.6.2 Extending I.V. Rod Lift up on top of I.V. rod (Figure 3-8) until desired height is achieved.
Figure 3-7
Figure 3-8

4-1
Troubleshooting Guide Operator Manual 076514
4
TROUBLESHOOTING GUIDE
4.1 Theory of
Operation
4.1.1 Caster Braking
System
The Hausted caster system utilizes a system known as “The Four Wheel Brake
and Steer System.” Four casters are used, two each Brake and Swivel and two
each Brake and Steer. The Brake and Steer caster’s are located at the patients
foot unless otherwise special ordered by the customer. The caster system can
also be ordered with an optional Center Steering Caster (Center Track
Steering/ Fifth Wheel - see below).
The system was designed for ease of use and patient safety. A series of levers
are positioned at the both ends of the base to activate. One step on the green
pedal cap engages steering. The system is designed to initially start pushing
the unit from the head end and on your next step, all in one motion, push down
the steer side of the shift lever. This locks the steer caster(s) in the “trailing
position.” If the unit is not initially pushed from the head end, it is possible for
the steer caster(s) to lock 180 degrees opposite, causing a wobble.
The red side of the lever engages the brake. Push down on the red pedal pad
and all four brakes are engaged. If the brakes are adjusted properly, with force
you will be able to pull the tire past the brake shoe. If the brake is not adjusted
to this specification, the unit will not stay in position, or the brake shoe will indent
the tire causing a flat spot on the tire.
When all the levers are level, the caster system is in neutral. All casters are in
the swivel mode. This position is used to push the unit from the side position
to another unit for patient transfer.
4.1.2 Center Track
Steering
(If Equipped)
The Center Track Steering (fifth wheel) System used on the Horizon, utilizes a
center wheel that contacts the floor when the steering lock (green) pedal is
activated. The wheel is mounted to a fork under the unit, that is spring loaded
and held above the floor while in either the brake or in neutral positions. When
the steer lock (green) pedal is pressed, arms that are connected to the hex
rods, rotate a cam positioned above the fifth wheel fork. The cam is rotated,
forcing the center wheel to apply pressure to the floor.
4.1.3 Retracto Rail The rail is designed to have a down position where the legs cradle over each
other within the bumper channel and main frame of the top. The half position
may be used for patient treatment while still allowing some patient protection,
and full upright position for patient transport mode and while patient is
unattended.
4.1.4 Pneumatic Fowler
Backrest
The backrest uses a charged gas spring (pneumatic cylinder). Handles are
located in the backrest that activate the cylinder. This cylinder assists the
attending personnel for patient positioning.

4-2
076514 Operator Manual Troubleshooting Guide
4.2 Operator Trouble
Shooting Guide
SYMPTOMS
Casters
Unit will not track straight down hallway
CAUSE RESOLUTION
Unit is not locked into the Steer / Lock
position or casters are dirty.
Steer lock caster(s) or fifth wheel are
dirty.
Unit is not locked into the Brake position
or casters are dirty.
Backrest
Backrest raises on its own without a
patient or descends with a patient
Rails
Rail will not stay up
Rail will not release
Unit slides when going around comers
Unit moves during treatment
Activation handle is stuck in the activated
position.
Push green side of shift lever down. Clean
debris from casters.
Clean steer caster tire or fifth wheel (if
equipped) tire.
Push red side of shift lever down. Clean
debris from casters.
Check for obstruction (pad, sheet) that
would prevent handle from returning to
the released position.
Rail latch is not locking properly
Rail latch Stuck and will not release rail.
Check for obstruction that would prevent
handle from activating.
Check for obstruction at latch (pad, sheet)
Lift slightly on rail to prevent bind.
Activation handle is stuck in the released
position.
Backrest will not raise
IMPORTANTNOTE:STRETCHERSARETOBESERVICEDBYQUALIFIED
PERSONNELONLY.Iftheresolutionslistedabovedonotresolvetheproblem
or if the problem you are experiencing is not listed above, contact STERIS for
serviceat 1-800-333-8828(Be suretohavestretchermodelandserialnumber
ready).

4-3
Troubleshooting Guide Operator Manual 076514
4.3 Service
Troubleshooting (For
Service Technicians)
Caster Braking System
Casters do not hold in brake mode a. Check adjustment of the brake as per
Adjustment Instructions in Section
5.3.1.
b. Replace faulty caster (see Caster Replacement Instructions in Section
5.3.3).
a. Check adjustment of the steering lock casters as per Adjustment Instruc-
tions in Section 5.3.2.
b. Replace faulty caster (see Caster Replacement Instructions in Section
5.3.3).
a. Lift cover off of unit and add 3 to 5 drops of light machine oil on top of the
caster stems on each caster. Shift levers from brake to steer mutiple times
to work in oil.
NOTE: Be sure not to get oil on the wheel of the caster.
b. Make sure that the brake hex rod linkages are in line and the cam levers
are tight on the hex rod. The eye bolts must be positioned so that the hex
rods are not binding or flexing. Make sure grease Is used where the eye
bolts and hex rods rub together to prevent wear.
Retracto Rail
Rail will not stay up a. Check to insure rail latch shoulder bolt is installed
b. Replace lock plate (see Removing/Replacing Rail Latch Instructions in
Section 5.4.4).
Steer lock casters do not engage or
disengage
Brake/Steer Shift lever is hard to
activate
Fowler Backrest
Backrest will not raise when gas
spring is activated
a. Check adjustment of the pneumatic gas spring as per Adjustment Instruc-
tions in Section 5.4.1.
b. Replace faulty pneumatic cylinder (see Removing/Replacing Gas Spring
in Section 5.4.2).
a. Check adjustment of the pneumatic gas spring as per Adjustment Instruc-
tions in Section 5.4.1.
b. Replace faulty pneumatic cylinder (see Removing/Replacing Gas Spring
in Section 5.4.2).
Backrest raises on its own without a
patient or descends with a patient

5-1
Recommended Preventive Maintenance Operator Manual 076514
5
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RECOMMENDED PREVENTIVE MAINTENANCE
Material
Lubricating oil, light-duty
grease, wax stick lubricant or
graphite lubricant.
Schedule
3 Months
Proper size wrench and screw-
driver.
3 MonthsInspect all fasteners to ensure proper fit,
position and tightness (including nuts,
bolts, etc.).
Procedure
Lubricate all moving and sliding parts
and hinge points.
>!< Never Lubricate Gas Spring, Shafts >!<
!!
Metal File, proper color paint
(specify color when ordering).
3 MonthsInspect all surfaces and remove any
user developed sharp or burred areas.
Apply touch-up where required.
For more details information, please contact:
STERIS Corporation at:
1-800-333-8828
Component
Pads and
Mattresses
5.1 Recommended
Cleaning
Instructions
Schedule
After Each Use
Cleaning Agent
Routine Hospital Grade
Disinfectants, Soap
and Water
Routine hospital grade
disinfectants, soap and
water
Cleaning Procedure
Wipe with damp cloth to remove
any foreign materials
Wipe with damp cloth to remove
any foreign materials.
Special Notes
• Use only medium strength cleaners
• Do not steam clean or pressure wash
• Lubricate pivot points after washing
CAUTION: Steam cleaning
of stretcher is not recom-
mended and can void
warranty.
Stretcher After each use
After each useWipe with damp cloth to remove
any foreign materials.
Routine hospital grade
disinfectants, soap and
water
• Lubricate pivot points after washing
Accessories
NOTE:Steamcleaningandpressurewashingofstretcherisnotrecommended
and can void warranty.

5-2
076514 Operator Manual Recommended Preventive Maintenance
5.2 Service
Preventive
Maintenance
Checklist
5.2.1 Reference Chart
Intended For Service
Technicians
Description Freq.
1.0 PREPARATION FOR PREVENTIVE MAINTENANCE
1.1 Discuss equipment with operators Each
2.0 GENERAL INSPECTION
2.1 Verify that all fasteners are secure. Each
2.2 Check weld integrity - frame, columns, top assembly, accessories. Each
2.3 Check for scratches or peeling on painted surfaces. Each
2.4 Check tabletop for any excessive horizontal or vertical play. Each
3.0 CASTERS, STEERING AND BRAKING SYSTEM
3.1 Check / clean caster wheels. Each
3.2 Lubricate caster stems, eye bolts, linkages, using 3-5 drops of oil.
Note: Be sure not to get oil on the wheel of the caster. A/R
3.3 Replace brake (red) and steer (green) pedal pads. A/R
3.4 Verify operation of steer, neutral and brake functions. Each
3.5 Fifth Wheel (if equipped) - Verify proper operation in brake (wheel off floor), Each
neutral (wheel off floor) and steer (wheel on floor) positions,
4.0 PATIENT SIDE RAILS
4.1 Check rail fasteners. Each
4.2 Verify that the rail locks in the upright and half height positions. Each
5.0 FOWLER BACKREST
5.1 Check fowler pivot pins. Each
5.2 Verify that pneumatic fowlers stay when handles are released and that fowler is not spongy. Each
6.0 ACCESSORIES
6.1 Verify that all accessories are not broken or damaged and can be securely attached. Each
7.0 FINAL TESTING
7.1 Secure all covers and shrouds. Each
7.2 Reinstall any pads and accessories that were removed. Inspect pads for rips, tears, etc Each
7.3 Check area to insure removal of all materials used during inspection. Each
7.4 Notify customer that PM inspection is complete. Each

5-3
Recommended Preventive Maintenance Operator Manual 076514
5.3 Caster Braking
System Maintenance
5.3.1 Adjusting The Caster
Brakes
See Base Assembly Parts List in Section 7.
Tools Required: Small straight bladed screwdriver
1. Using the screwdriver, knock out the small plastic plug on the back of the
caster (Items 2 and/or 3).
2. Place the braking system in the neutral position.
3. Insert the screwdriver into the hole in the back of the caster created in step
#1. Rotate the adjustment screw clockwise to increase the brake tension
and counter clockwise to decrease brake pressure.
4. With the brake properly adjusted, the brake should allow the tire to rotate
with force. If the brake is over adjusted, it will release with very little effort
(Bumped under normal operating conditions).
NOTE: Preventive maintenance – apply 3-5 drops of oil in top of stem.
NOTE: Be sure not to get oil on the wheel of the caster.
5.3.2 Adjusting The Caster
Steer-Lock
See Base Assembly Parts List in Section 7.
1. The steer lock casters on the 402 are not adjustable, if the steer lock function
is not working properly, replace the faulty caster.
5.3.3 Removing/Replacing
Casters
See Base Assembly Parts List in Section 7.
1. Raise the plastic base cover (Item 27) and tie to top with bungy cord.
2. Place the braking system in brake mode.
3. Remove either the starlock cap (Item 17) or the brake pedal assembly (Item
12 or 13) next to the caster being removed.
4. Loosen the lock collar (Item 15) on the hex rod, opposite the caster being
removed, and loosen brake rod cam (Item 10) set screw.
5. With a blunt end punch and hammer, knock the hex rod (Item 11) out of the
top of the caster being removed.
6. Using a screwdriver, bend the tabs away from the caster bolt lock plates
(Item 4) then remove the two caster bolts (Item 5).
7. Drop caster from frame (Item 1).
8. Locate the new caster (red top brake, green top steer). With the 7/16" hex
Allen wrench, lock new caster in brake mode, taking note of the position for
the hex relative to the hex rod.
9. Reinstall caster by reversing steps 1-6.
10. Using instant adhesive, glue rubber grommet (Item 22) on top of new
caster.

5-4
076514 Operator Manual Recommended Preventive Maintenance
5.4 Fowler Backrest
And Retracto Rail
Maintenance
5.4.1 Adjusting The Gas
Spring See Fowler Parts List in Section 7.
1. Raise the fowler backrest all the way up.
2. Loosen the lock collar assembly (Item 19) set screw (Item 20).
3. Place cloth on gas spring shaft and clamp vice grips onto shaft (be sure not
to damage gas spring shaft).
4. Rotate to the shaft to the right to increase gas spring activation (gas spring
will not raise or lower when handle is activated) or to the left to decrease
activation (if gas spring lowers with weight or raises without wait by itself).
5. Place flat angle of lock collar assembly (Item 19) over one flat on the gas
spring nut, apply blue thread locker to set screw (Item 20) and tighten lock
collar assembly (Item 19) set screw (Item 20).
5.4.2 Removing/Replacing
The Gas Spring
WARNING: Do not activate
pneumaticgas springwhen
it is off unit.
See Fowler Parts List in Section 7.
1. Raise fowler backrest to approximately 60 degrees.
2. Loosen set screw (Item 20) on lock collar assembly (Item 19).
3. Loosen gas spring nut (Item 33).
4. Remove rue-clip (Item 32) from hinge pin (Item 31).
5. Remove hinge pin (Item 31).
6. Remove gas spring nut (Item 33).
7. Remove gas spring (Item 30), make sure actuating pin (Item 36) did not
fall out.
8. Unscrew pivot ball (Item 35) from end of gas spring.
9. Remove ball retainer (Item 34), gas spring nut (Item 33) and lock collar
assembly (Item 19).
10. Install lock collar assembly (Item 19), gas spring nut (Item 33), ball retainer
(Item 34) and (Item 35) pivot ball (screw on until top of ball is flush with gas
spring activation pin) onto new gas spring.
11. Insert assembled gas spring into fowler assembly (Item 21).
12. Reinstall hinge pin (Item 31) and rue-clip (Item 32).
13. Tighten gas spring nut (Item 33).
NOTE: Be sure to apply removable thread locker to threads.
14. Inspect for proper operation (see Section 5.4.1, Adjusting The Gas
Spring ).
15. Place flat angle of lock collar assembly (Item 19) over one flat on the gas
spring nut, apply blue thread locker to set screw (Item 20) and tighten lock
collar assembly (Item 19) set screw (Item 20).