Midmark 318-001 Service manual

318

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Oral

-001

Surgery Table

Serial Number Prefix: KZ

Service and

Parts Manual

-001

318

FOR USE BY MIDMARK TRAINED TECHNICIANS ONLY

SF-1587 Part No. 004-0077-00 Rev. F (1/01/04)

MIDMARK

318

MA428900

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TABLE OF CONTENTS

Section/Paragraph Page Section/Paragraph Page

IMPORTANT INSTRUCTIONS

General Safety Instructions..........................................iii

Warnings..................................................................... iii

Warranty Instructions .................................................. iii

SECTION I GENERAL INFORMATION

1.1 Scope of Manual ......................................... 1-1

1.2 How to Use Manual ..................................... 1-1

1.3 Description of 318 Oral Surgery Table ......... 1-1

1.4 Standard Torque Specifications.................... 1-4

1.5 Specifications ............................................. 1-4

1.6 Parts Replacement Ordering ....................... 1-5

1.7 Special Tools .............................................. 1-6

SECTION II TESTING AND TROUBLESHOOTING

2.1 Operational Test.......................................... 2-1

2.2 Troubleshooting Procedures ........................ 2-1

SECTION III SCHEDULED MAINTENANCE

3.1 Scheduled Maintenance .............................. 3-1

SECTION IV MAINTENANCE/SERVICE INSTRUCTIONS

4.1 Introduction ................................................. 4-1

4.2 Motor Cover Assembly Removal /

Installation ............................................... 4-1

4.3 Checking / Adding Oil To Motor Pump ........ 4-1

4.4 Up Functions Shuttle Valve Removal /

Installation ............................................... 4-2

4.5 Down Functions Shuttle Valve Removal /

Installation ............................................... 4-3

4.6 Anti-cavitation Solenoid Valve Removal /

Installation ............................................... 4-4

4.7 Up Functions Relief Valve Removal /

Installation ............................................... 4-5

4.8 Down Functions Relief Valve Removal /

Installation ............................................... 4-6

4.9 Motor Pump Assembly - Complete

Removal / Installation .............................. 4-7

4.10 Motor Pump Removal / Installation ............. 4-8

4.11 Motor Shaft Seal Removal / Installation ...... 4-9

4.12 Back Cylinder Removal / Installation......... 4-11

4.13 Tilt Cylinder Removal / Installation ............ 4-13

4.14 Base Cylinder Removal / Installation......... 4-15

4.15 Foot Cylinder Removal / Installation.......... 4-17

4.16 Time Delay Relay Removal /

Installation ............................................. 4-19

4.17 Capacitors Removal / Installation .............. 4-20

4.18 Chain Assembly Adjustment ..................... 4-21

4.19 Base Slide Assembly Removal /

Installation ............................................. 4-22

4.20 Headrest Adjustment................................. 4-26

4.21 Headrest Handle Handle Stops

Adjustment ............................................ 4-26

4.22 Typical Foot Switch Removal /

Installation ............................................. 4-27

4.23 Upholstery Removal / Installation .............. 4-27

4.24 Hydraulic System Flushing Procedure....... 4-30

SECTION V SCHEMATICS AND DIAGRAMS

5.1 Electrical Schematics / Wiring Diagrams..... 5-1

5.2 Hydraulic Flow Diagrams............................. 5-3

SECTION VI PARTS LIST

6.1 Introduction ................................................. 6-1

6.2 Description of Columns ............................... 6-1

6.3 Torque Specifications and Important

Assembly Notes ....................................... 6- 1

Pictorial Index ............................................. 6-2

Back Components........................................ 6-3

Upholstery Set - Thermoform ....................... 6- 4

Upholstery Set - Narrow ............................... 6- 5

Hydraulic System......................................... 6- 6

Headrest Assembly....................................6-7.*

Seat Components ........................................ 6-8

Footboard Components ................................ 6-9

Base Covers And Enclosures .................... 6-10

Base Mechanical Components ................... 6-11

Base Slide Assembly................................. 6-12

Base Electrical Components ...................... 6-13

Motor / Pump Components ........................ 6-14

Foot Control Assembly............................... 6-15

COMMENTS ............................................................ 7-1

FAX ORDERING FORM .......................................... 7-2

(*) Indicates that there has been a serial number break for the illustration

and that there are additional point page(s) following the original page.

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IMPORTANT INSTRUCTIONS

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General Safety Instructions

Safety First: The primary concern of Midmark Corporation is that this table is maintained with the

safety of the patient and staff in mind. To assure that services and repairs are completed safely and correctly, proceed as follows:

(1) Read this entire manual before performing any

services or repairs on this table.

(2) Be sure you understand the instructions

contained in this manual before attempting to service or repair this table.

Safety Alert Symbols

Throughout this manual are safety alert symbols that call attention to particular procedures. These items are used as follows:

DANGER

A DANGER is used for an imminently

hazardous operating procedure, practice, or condition which, if not correctly followed, will result in loss of life or serious personal injury.

NOTE

A NOTE is used to amplify an operating procedure, practice or condition.

Warranty Instructions

Refer to the Midmark “Limited Warranty” printed in the Installation and Operation Manual for warranty information. Failure to follow the guidelines listed below will void the warranty and/or render the 318 Oral Surgery Table unsafe for operation.

• In the event of a malfunction, do not attempt to operate the table until necessary repairs have been made.

• Do not attempt to disassemble table, replace malfunctioning or damaged components, or perform adjustments unless you are one of Midmark’s authorized service technicians.

• Do not substitute parts of another manufacturer when replacing inoperative or damaged components. Use only Midmark replacement parts.

WARNING

A WARNING is used for a potentially

hazardous operating procedure, practice, or condition which, if not correctly followed, could result in loss of life or serious personal injury.

CAUTION

A CAUTION is used for a potentially

hazardous operating procedure, practice, or condition which, if not correctly followed, could result in minor or moderate injury. It may also be used to alert against unsafe practices.

EQUIPMENT ALERT

An EQUIPMENT ALERT is used for an

imminently or potentially hazardous operating procedure, practice, or condition which, if not correctly followed, will or could result in serious, moderate, or minor damage to unit.

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SECTION I

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GENERAL INFORMATION

1.1 Scope of Manual

This manual contains detailed troubleshooting, scheduled maintenance, maintenance, and service instructions for 318 Oral Surgery Table. This manual is intended to be used by Midmark’s authorized service technicians.

1.2 How to Use Manual

SECTION I

GENERAL INFORMATION

The major serviceable components of the table are the motor pump, up functions relief valve (600 PSI), down functions relief valve (400 PSI), up functions shuttle valve, down functions shuttle valve, anti-cavitation solenoid valve, capacitors, control panel with terminal block, back cylinder, foot cylinder, tilt cylinder, base cylinder, base slide assembly, chain assembly, time delay relay and foot switches.

A. Manual Use When Performing Scheduled Mainte-

nance. (1 ) Perform inspections and services listed in

Scheduled Maintenance Chart (Refer to para 3.1).

(2) If a component is discovered to be faulty or out

of adjustment, replace or adjust component in accordance with maintenance/service instructions (Refer to para 4.1).

B. Manual Use When Table Is Malfunctioning And

Cause Is Unknown. (1 ) Perform an operational test on table (Refer to

para 2.1).

(2 ) Perform troubleshooting procedures listed in

Troubleshooting Guide (Refer to para 2.2).

(3) If a component is discovered to be faulty or out

of adjustment, replace or adjust component in accordance with maintenance/service instructions (Refer to para 4.1).

C. Manual Use When Damaged Component Is Known.

B. Theory of Operation (See Section IV, Figures 5-1

thru 5-2 for wiring diagrams and electrical schematics, and Figures 5-3 and 5-4 for hydraulic flow diagrams.)

When no functions are selected, 115 VAC is supplied to terminals 1 and 2 of all foot switches. There is no path to neutral, however, so no current flows and nothing happens. When the operator selects one of the four up functions (BACK UP, TABLE UP, FOOT UP, or TILT UP) with the foot control, three paths to neutral are created. Current flows from terminal 2 to terminal 4 of switch and then across the motor pump winding T2 to neutral, starting the motor pump pumping. Current also flows from terminal 2 to terminal 4 of switch and then across the coil of the anti-cavitation solenoid valve, energizing the valve and causing it to open. Current also flows from terminal 2 to terminal 3 of switch and then across the coil of the cylinder solenoid valve and the time delay relay, energizing the valve and causing it to open. The time delay relay delays current flow across the coil of the cylinder solenoid valve for 1/10 of a second, causing it to energize 1/10 of a second after the motor pump and anti-cavitation solenoid valve have energized. This allows the motor pump to run and oil pressure to build first, so table top will not drift downward slightly before starting to rise.

(1 ) Replace or adjust component in accordance

with maintenance/service instructions (Refer to para 4.1).

1.3 Description Of 318 Oral Surgery Table

A. General Description (See Figure 1-1). The 318 Oral Surgery Table is an examination table

designed specifically for performing general medical examinations and procedures.

When the motor pump starts pumping, suction is created by the rotating pump gears, which allows oil to defeat the reservoir check valve and flow into the pump gears. The pump gears pressurize the oil which flows to the up function shuttle valve. The check ball and shuttle in the up function shuttle valve are pushed to the open position by the oil, allowing oil to flow through the shuttle valve by flowing around the check ball (with the shuttle in the open position, oil is prevented from flowing through the reservoir ports and returning to the reservoir). The oil then flows through the open cylinder solenoid valve at the base of the selected cylinder,

SECTION I

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GENERAL INFORMATION

BACK

CYLINDER

BASE

CYLINDER

TIL T

CYLINDER

ANTI-CAVITATION SOLENOID VALVE

MOTOR

PUMP

DOWN FUNCTION

SHUTTLE VALVE

UP FUNCTION

SHUTTLE VALVE

TERMINAL

BLOCK

TIME DELAY

RELAY

UP FUNCTION

RELIEF VALVE

FOOT

CYLINDER

CHAIN

ASSEMBLY

BASE SLIDE

ASSEMBLY

CAPACITORS

DOWN FUNCTION

RELIEF VALVE

FOOT

SWITCH

FOOT

CONTROL

MA469900

Figure 1-1. Major Components

SECTION I

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GENERAL INFORMATION

extending the cylinder rod. When the cylinder rod extends, oil is forced out of the rod end of the cylinder, through the open anti-cavitation solenoid valve and to the down function shuttle valve. The check ball and the shuttle in the down function shuttle valve are pushed to the closed position by the oil, which prevents oil from flowing through the shuttle valve and into the motor pump, but allows the oil to flow through the newly uncovered reservoir ports into the reservoir. When the cylinder rod reaches the end of its travel, the up function relief valve opens when the pressure reaches 525 - 600 PSI (36.2 - 41.4 BARS) and allows the oil to return to the reservoir. This prevents the motor pump from developing too high of pressures and damaging the hydraulic system components, hoses, or the motor pump itself.

When the operator releases the pedal on the foot control, the path to neutral is opened, causing the motor pump to shut down and the anti-cavitation solenoid valve and the cylinder solenoid valve to de-energize, causing the valves to close.

When no functions are selected, 115 VAC is supplied to terminals 1 and 2 of all foot switches. There is no path to neutral, however, so no current flows and nothing happens. When the operator selects one of the four down functions (BACK DOWN, TABLE DOWN, FOOT DOWN, or TILT DOWN) with the foot control, two paths to neutral are created. Current flows from terminal 2 to terminal 4 of switch and then across the motor pump winding T3 to neutral, starting the motor pump pumping. Current also flows from terminal 2 to terminal 3 of switch and then across the coil of the cylinder solenoid valve and the time delay relay, energizing the valve and causing it to open. The time delay relay delays current flow across the coil of the cylinder solenoid valve for 1/ 10 of a second, causing it to energize 1/10 of a second after the motor pump and anti-cavitation solenoid valve have energized. This allows the motor pump to run and oil pressure to build before table is operated, so table top will not cavitate.

When the motor pump starts pumping, suction is created by the rotating pump gears, which allows oil to defeat the reservoir check valve and flow into the pump gears. The pump gears pressurize the oil which flows to the down function shuttle valve. The check ball and shuttle in the down function shuttle valve are pushed to the open position by the oil, allowing oil to flow through the shuttle valve by flowing around the check ball (with the shuttle in the open position, oil is prevented from flowing through the reservoir ports and returning to the reservoir). The oil then flows through the open anticavitation solenoid valve and into the rod end of the cylinder, causing the cylinder rod to retract. When the cylinder rod retracts, oil is forced out of the base of the cylinder, through the open cylinder solenoid valve to the up function shuttle valve. The check ball and the shuttle in the up function shuttle valve are pushed to the closed position by the oil, which prevents oil from flowing through the shuttle valve and into the motor pump, but allows the oil to flow through the newly uncovered reservoir ports into the reservoir. When the cylinder rod reaches the end of its travel, the down functions relief valve opens when the pressure reaches 250 - 325 PSI (17.2 - 22.4 BARS) and allows the oil to return to the reservoir. This prevents the motor pump from developing too high of pressures and damaging the hydraulic system components, hoses, or the motor pump itself.

When the operator releases the pedal on the foot control, the path to neutral is opened, causing the motor pump to shut down and the cylinder solenoid valve to de-energize, causing the valve to close.

The anti-cavitation solenoid valve is in the hydraulic system to prevent oil from escaping out of the rod end of a cylinder while the table is not being moved. Otherwise, a cylinder rod would be able to extend on its own if upward pressure was placed on that function of the table top by the doctor or patient.

The cylinder solenoid valves are in the hydraulic system to prevent oil from escaping out of the base of the cylinder assemblies. Otherwise, a cylinder assembly could retract on its own, allowing the table top to drift.

SECTION I

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GENERAL INFORMATION

The cylinder solenoid valves are in the hydraulic system to prevent oil from escaping out of the base of the cylinder assemblies. Otherwise, a cylinder assembly could retract on its own, allowing the table top to drift.

1.4 Standard Torque Specifications

The following standard torque specifications in Table 1-1 apply to the various hardware used on the units unless otherwise listed elsewhere in service procedures or parts illustrations:

Table 1-1. Torque Specifications

Hardware Size Torque Values

#6 ........................... 11 to 21 inch / lbs. (1.2 to 2.3 N•M)

#8 ........................... 20 to 30 inch / lbs. (2.2 to 3.3 N•M)

#10.......................... 32 to 42 inch / lbs. (3.6 to 4.8 N•M)

1/4" ......................... 75 to 85 inch / lbs. (8.5 to 9.6 N•M)

5/16" .................... 18 to 22 foot / lbs. (24.4 to 29.8 N•M)

3/8" ...................... 31 to 35 foot / lbs. (42.0 to 47.5 N•M)

1/2" ...................... 50 to 60 foot / lbs. (67.8 to 81.4 N•M)

1.5 SPECIFICATIONS

Factual data for the 318 Oral Surgery Table is provided in Table 1-2. Also, see Figure 1-2.

Table 1-2. Specifications

Description Data

Oil Used In Hydraulic System ....................... light grade

medicinal mineral oil

Hydraulic System

Oil Capacity ..................... Approx. 2.5 quarts (2.4 liters)

Motor Pump Reservoir Capacity......... 1 quart (.946 liter)

Electrical Requirements:.............110 - 120 VAC, 60 HZ,

12 amp, single phase

Power Consumption: ................................. 960 WATTS,

8 amps @ 120 VAC

Recommended Circuit:

A separate (dedicated) circuit is recommended for this table. The table electrical circuit with other appliances or equipment unless the circuit is rated for the additional load.

Up Function Relief Valve Setting............ Valve opens at

Down Function Relief Valve Setting ....... Valve opens at

should not

be connected to an

525 to 600 PSI

(36.2 to 41.4 BARS)

250 to 325 PSI

(17.2 to 22.4 BARS)

1.6 Parts Replacement Ordering

If a part replacement is required, order the part directly from the factory as follows:

Weight:

Fixed Base

Without Shipping Carton ................. 380 lb (176.8 kg)

With Shipping Carton ...................... 445 lb (206.7 kg)

Shipping Carton ...... 58 in. "L" x 31 in. "W" x 42 in. "H"

(147 cm x 79 cm x 107 cm)

Dimensions (See Figure 1-2):

Table Top Length.............................. 70 in. (177.8 cm)

Table Top Length (headrest extended) ............... 80 in.

(203.2 cm)

Table Top Width.................................. 27 in. (68.6 cm)

Overall Width ...................................... 27 in. (68.6 cm)

NOTE

It is

important

Number

ing a service call, or seeking technical advice.

(1 ) Refer to Figure 1-3 to determine the location of

the model number (A) and serial number (B) of the table and record this data.

(2 ) Refer to the Parts List to determine the item

numbers of the parts, part numbers of the parts, descriptions of the parts, and quantities of parts needed and record this data (Refer to para 6.1).

that the

be presented when ordering parts, schedul-

entire Model and Serial

NOTE

Table Positioning (Adjustable):

Standard Base Table Top Height .......... 26 in. to 42 in.

(66 cm to 107 cm)

Weight Capacity.................................. 325 lb (147.3 kg)

Ask the Purchasing Department of the company that owns the table for this information. Otherwise, this information may be obtained from the dealer that sold the table.

70" LONG (MIN.)

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80" LONG (MAX.)

SECTION I

GENERAL INFORMATION

23" WIDE BASE

21"

(MIN.)

80

4'

CORD

° +/- 5°

31"

BASE

90°

45°

6'

CORD

Figure 1-2. Table Dimensions

27" WIDE SEAT

26"

(Min.)

42"

(MAX.)

MA470000

A

B

MA398600

Figure 1-3. Model Number / Serial

Number Location

(3 ) Determine the installation date of the table and

record this data.

(4 ) Call Midmark with the recorded information and

ask for the Medical Products Technical Services Department. See back cover of this

1.7 Special Tools

Table 1-3 lists all of the special tools needed to repair the table, how to obtain the special tools, and the purpose of each special tool.

manual for the phone number or use the Fax Order Form (See page 7-2 for Fax Order Form).

Table 1-3. Special Tool List

Description of Special Tool

Multimeter Commercially Available Any Type Used to perform continuity and voltage checks. Torque Wrench Commercially Available Any Type Used to tighten all hardware to torque values

Manufacturer's

Name / Address / Phone

Manufacturer's

Part Number

Purpose of Special Tool

specified.

SECTION I

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GENERAL INFORMATION

TESTING AND TROUBLESHOOTING

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2.1 Operational Test (See Figure 2-1)

SECTION II

TESTING AND TROUBLESHOOTING

SECTION II

In order to effectively diagnose the malfunction of the table, it may be necessary to perform an operational test as follows:

WARNING

Refer to the Operator Manual for

complete instructions on operating the table. Failure to do so could result in personal injury.

NOTE

The Operational Test, for the most part, only describes what should happen when the table is operated. If the table does something other than described, a problem has been discovered. Refer to the Troubleshooting Guide to determine the cause of the problem and its correction.

(1) Plug the table into a grounded, non-isolated,

correctly polarized outlet that has the proper voltage output for the table. See Figure 2-1.

(2) Depress TABLE UP, TABLE DOWN, BACK

UP, BACK DOWN, TILT UP, TILT DOWN, FOOT UP, and FOOT DOWN pedals on foot control.

MIDMARK

318

TABLE

TOP

BACK

SECTION

SEAT

SECTION

FOOT

SECTION

FOOT

CONTROL

(3) Observe. The table top should move in the

direction corresponding to the pedal which is being depressed. Movement should be steady and should not be too slow or too fast.

Figure 2-1. Operational Test

MA470100

2.2 Troubleshooting Procedures

Table 2-1 is a Troubleshooting Guide which is used to determine the cause of the malfunction.

SECTION II

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TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide

Problem Symptom Probable Cause Check Correction

Table will not operate when any of the eight up or down functions are selected.

When a foot pedal is depressed, motor pump does not run and solenoid cannot be heard being energized (audible click).

When a foot pedal is depressed, motor pump does not run, but solenoid can be heard being energized (audible click).

Power cord is not plugged into facility wall outlet or, on export models, power cord isn't plugged into connector receptacle on table.

Facility circuit breaker providing power to table is tripped.

Wire connections loose. Check all wiring

Capacitor(s) is blown (motor pump may be humming).

Check to see if power cord is plugged in.

Check to see if facility circuit breaker is tripped. One way of checking this is to plug a lamp into wall outlet that table was plugged into.

connections from power cord to terminal block and from foot control to terminal block. Perform continuity check on wires. Use multimeter to check for proper voltage levels.

Replace suspect capacitor(s) with known working capacitor(s).

Plug power cord into facility wall outlet and/or connector receptacle on table.

If circuit breaker is tripped, determine what caused circuit breaker to trip, correct the problem, and then reset/replace circuit breaker.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace capacitor(s). Refer to para 4.18.

Motor thermal overload switch is activated because motor pump overheated.

Motor pump is burned out. Replace suspect motor

Wire connections loose. Check all wiring

Wait 15 to 20 minutes. Allow motor pump to cool and

pump with known working motor pump.

connections from terminal block to motor pump. Use multimeter to check for proper voltage levels.

then try to operate table. If motor pump does not run now, replace motor pump. Refer to para 4.9 or 4.10.

Replace motor pump. Refer to para 4.9 or 4.10.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

TESTING AND TROUBLESHOOTING

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Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

Table will not operate when any of the eight up or down functions are selected - Continued.

The TABLE UP, BACK UP, TILT UP, and FOOT UP functions do not work, but TABLE DOWN, BACK DOWN, TILT DOWN, and FOOT DOWN functions do.

When a foot pedal is depressed, motor pump runs, but table top does not move.

When a foot pedal is depressed, motor pump runs and solenoid can be heard energizing.

When a foot pedal is depressed, motor pump hums, but does not run.

Motor pump runs when an up function foot pedal is depressed, but table top does not move.

Motor pump does not run when an up function foot pedal is depressed, but does when a down function foot pedal is depressed.

Time delay relay is malfunctioning.

Hydraulic system is low on mineral oil.

Capacitor(s) is blown. Replace suspect

Motor pump is locked up or burned out.

Anti-cavitation solenoid valve is malfunctioning.

Wire connections loose. Check all wiring

Up function shuttle valve is malfunctioning.

Motor pump is defective. Replace suspect motor

Use a jumper wire to bypass time delay relay. If table top moves now, time delay relay is malfunctioning.

Check oil level in reservoir. If necessary, add oil to

capacitor(s) with known working capacitor(s).

Replace suspect motor pump with known working motor pump.

Check for slight magnetism on bottom side of anti-cavitation solenoid valve, indicating solenoid is not burned out or replace suspect anti-cavitation solenoid valve with known working anti-cavitation solenoid valve.

connections from terminal block to anti-cavitation solenoid valve. Use multimeter to check for proper voltage levels.

Check to see if check ball is loose in up function shuttle valve or adjacent elbow (check ball should be held in shuttle valve by metal ring).

pump with known working motor pump.

Replace time delay relay. Refer to para 4.16.

reservoir. Refer to para 4.3.

Replace capacitor(s). Refer to para 4.17.

Replace motor pump. Refer to para 4.9 or 4.10.

Replace anti-cavitation solenoid valve. Refer to para 4.6.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace up function shuttle valve. Refer to para 4.4.

Replace motor pump. Refer to para 4.9 or 4.10.

SECTION II

Wire connection in foot control is loose.

Check all wiring connections in foot control.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

SECTION II

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TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

The TABLE DOWN, BACK DOWN, TILT DOWN, and FOOT DOWN functions do not work, but TABLE UP, BACK UP, TILT UP, and FOOT UP functions do.

Motor pump runs when a down function foot pedal is depressed, but table top does not move.

Down function shuttle valve is malfunctioning.

Motor pump is defective. Replace suspect motor

Check to see if check ball is loose in down function shuttle valve or adjacent elbow (check ball should be held in shuttle valve by metal ring).

pump with known working motor pump.

Replace down function shuttle valve. Refer to para 4.5.

Replace motor pump. Refer to para 4.9 or 4.10.

TABLE UP function works, but TABLE DOWN function does not or TABLE DOWN function works but TABLE UP function does not. All other functions work.

BACK UP function works, but BACK DOWN function does not or BACK DOWN function works but BACK UP function does not. All other functions work.

Motor pump does not run when a down function foot pedal is depressed, but runs when an up function is pressed.

Motor pump does not run and base cylinder solenoid valve does not energize.

Motor pump runs but base cylinder solenoid valve does not energize or vice versa.

Motor pump does not run and back cylinder solenoid valve does not energize.

Motor pump runs but back cylinder solenoid valve does not energize or vice versa.

Motor pump is defective. Replace suspect motor

Wire connection in foot control is loose.

TABLE UP or TABLE DOWN foot switch is malfunctioning.

Wire connection to foot switch is loose.

TABLE UP or TABLE DOWN foot switch is malfunctioning.

BACK UP or BACK DOWN foot switch is malfunctioning.

Wire connection to foot switch is loose.

BACK UP or BACK DOWN foot switch is malfunctioning.

pump with known working motor pump.

Check all wiring connections in foot control.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Check all wiring connections on suspect foot switch.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Check all wiring connections on suspect foot switch.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Replace motor pump. Refer to para 4.9 or 4.10.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot switch. Refer to para 4.24.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot switch. Refer to para 4.24.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot switch. Refer to para 4.24.

TESTING AND TROUBLESHOOTING

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Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

TILT UP function works, but TILT DOWN function does not or TILT DOWN function works but TILT UP function does not. All other functions work.

FOOT UP function works, but FOOT DOWN function does not or FOOT DOWN function works but FOOT UP function does not. All other functions work.

TABLE UP and TABLE DOWN functions do not work. All other functions work.

Motor pump does not run and tilt cylinder solenoid valve does not energize.

Motor pump runs but tilt cylinder solenoid valve does not energize or vice versa.

Motor pump does not run and foot cylinder solenoid valve does not energize.

Motor pump runs but foot cylinder solenoid valve does not energize or vice versa.

Motor pump runs when TABLE UP or TABLE DOWN foot pedal is depressed, but table top does not move.

TILT UP or TILT DOWN foot switch is malfunctioning.

Wire connection to foot switch is loose.

TILT UP or TILT DOWN foot switch is malfunctioning.

FOOT UP or FOOT DOWN foot switch is malfunctioning.

Wire connection to foot switch is loose.

FOOT UP or FOOT DOWN foot switch is malfunctioning.

Base cylinder solenoid valve is malfunctioning.

White wire running from terminal 3 of foot switch to terminal block is broken or disconnected.

Wire running from terminal block to base cylinder solenoid valve is broken or disconnected.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Check all wiring connections on suspect foot switch.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Check all wiring connections on suspect foot switch.

Perform a continuity check on suspect foot switch in ON and OFF positions or replace suspect foot switch with known working foot switch.

Check to see if base cylinder solenoid valve energizes (audible click) when foot pedal is depressed.

Check continuity of wire and connections.

Replace foot switch. Refer to para 4.24.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot switch. Refer to para 4.24.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot switch. Refer to para 4.24.

Replace base cylinder. Refer to para 4.14.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

SECTION II

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TESTING AND TROUBLESHOOTING

Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

BACK UP and BACK DOWN functions do not work. All other functions work.

Motor pump runs when BACK UP or BACK DOWN foot pedal is depressed, but table does not move.

Back cylinder solenoid valve is malfunctioning.

Check to see if back cylinder solenoid valve energizes (audible click) when foot pedal is depressed.

Replace back cylinder. Refer to para 4.12.

TILT UP and TILT DOWN functions do not work. All other functions work.

FOOT UP and FOOT DOWN functions do not work. All other functions work.

Motor pump runs when TILT UP or TILT DOWN foot pedal is depressed, but table does not move.

Motor pump runs when FOOT UP or FOOT DOWN foot pedal is depressed, but foot section does not move.

White/black wire running from terminal 3 of foot switch to terminal block is broken or disconnected.

Wire running from terminal block to back cylinder solenoid valve is broken or disconnected.

Tilt cylinder solenoid valve is malfunctioning.

Orange wire running from terminal 3 of foot switch to terminal block is broken or disconnected.

Wire running from terminal block to tilt cylinder solenoid valve is broken or disconnected.

Foot cylinder solenoid valve is malfunctioning.

Red/black wire running from terminal 3 of foot switch to terminal block is broken or disconnected.

Check continuity of wire and connections.

Check to see if tilt cylinder solenoid valve energizes (audible click) when foot pedal is depressed.

Check continuity of wire and connections.

Check to see if foot cylinder solenoid valve energizes (audible click) when foot pedal is depressed.

Check continuity of wire and connections.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace tilt cylinder. Refer to para 4.13.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

Replace foot cylinder. Refer to para 4.15.

Clean any dirty connections. Tighten any loose connections. Replace any damaged connections.

TESTING AND TROUBLESHOOTING

Return To Table Of Contents

Table 2-1. Troubleshooting Guide - Continued

Problem Symptom Probable Cause Check Correction

Any of the four functions drift by themselves.

Back section of table top may be lifted by hand or tilt function may drift by itself.

Table moves fine for light patient, but will not move or moves slowly for very heavy patient.

Excessive sideways play of table top.

Table functions properly otherwise.

Occurs for both the up and down functions.

Occurs for up functions only.

Occurs for down functions only.

Table is not stable and can be moved from side to side.

A cylinder solenoid valve is stuck in open position or is malfunctioning.

A foot switch is malfunctioning and holding cylinder solenoid valve in the open position.

Anti-cavitation solenoid valve is malfunctioning.

Hydraulic system is low on mineral oil.

Up functions and down functions relief valves are malfunctioning.

Up functions relief valve is malfunctioning.

Down function relief valve is malfunctioning.

Chain assemblies are loose. Check tension of chain

Base slide assembly is worn or deformed.

Try to flush foreign objects out of cylinder solenoid valve by running oil through cylinder in both directions ten times.

Use multimeter to check for voltage at terminal 3 of suspect foot switch (no voltage should be present when foot switch is in OFF position).

Replace suspect anti-cavitation solenoid valve with known working anti-cavitation solenoid valve.

Check oil level in reservoir. If necessary, add oil to

Replace suspect relief valves with known working relief valves.

Replace suspect up functions relief valve with known working relief valve.

Replace suspect down functions relief valve with known working relief valve.

assemblies.

Check condition of base slide assembly.

Replace malfunctioning cylinder assembly.

Replace foot switch. Refer to para 4.24

Replace anti-cavitation solenoid valve. Refer to para

4.6.

reservoir. Refer to para 4.3.

Replace up functions and down functions relief valves. Refer to paras 4.7 and 4.8.

Replace up functions relief valve. Refer to para 4.7.

Replace down functions relief valve. Refer to para 4.8.

Adjust tension of chain assemblies. Refer to para

4.19. Replace base slide assembly.

Refer to para 4.20.

SECTION II

Return To Table Of Contents

TESTING AND TROUBLESHOOTING

SCHEDULED MAINTENANCE

Return To Table Of Contents

SECTION III

SCHEDULED MAINTENANCE

SECTION III

3.1 Scheduled Maintenance

periodically on the table. These inspections and services should be performed as often as indicated in

Table 3-1 is a Scheduled Maintenance Chart which lists

the chart.

the inspections and services that should be performed

Table 3-1. Scheduled Maintenance Chart

Interval Inspection or Service What to Do

Semi-annually Obvious damage Visually check condition of table for obvious damage such as: cracks in components, missing

Fasteners/hardware Check table for missing or loose fasteners/hardware. Replace any missing hardware and tighten any

Warning and instructional decals

Pivot points/moving parts/accessories

Hydraulic hoses and fittings

Foot control Check that foot control works correctly. Make sure foot pedals contact switch properly. Hydraulic functions Check that all four functions operate properly. If not, refer to the Troubleshooting Guide to determine

Cylinders Inspect all cylinders for signs of internal leaking or for weak operation. Replace cylinders as

Drift in table Check each cylinder to see if it drifts. Replace cylinder if necessary. Oil level Check oil level in motor pump. Add oil to motor pump if necessary. Refer to para 4.3. Headrest Assembly Check headrest for proper adjustment. If headrest does not have enough holding power, adjust

Excessive sideways play of table top

Anti-cavitation solenoid valve

Upholstery Check all upholstery for rips, tears, or excessive wear. Replace cushions as necessary. Refer to

Accessories Check that all accessories have all of their components and that they function properly. If necessary,

Operational Test Perform an Operational Test to determine if the table is operating within its specifications (Refer to

components, dents in components, leaking oil, or any other visible damage which would cause table to be unsafe to operate or would compromise its performance. Repair table as necessary.

loose hardware as necessary. Check for missing or illegible decals. Replace decals as necessary.

Lubricate all exposed pivot points, moving parts, and accessories with silicone based lubricant.

Check all hydraulic hoses and fittings for leaks. Replace any components causing leaks. Replace any hoses which have kinks, cuts, holes, or other damage.

the cause of the problem. Clean or replace components as necessary.

necessary.

headrest handles. Refer to para 4.21. Check that table top does not have excessive side play. Adjust chain assembly if necessary. Refer

to para 4.19. Check to see if back section may be lifted by hand or if the tilt function drifts by itself. If so, replace

anti-cavitation solenoid valve. Refer to para 4.6.

para 4.25.

repair or replace the accessory.

para 2.1). Replace or adjust any malfunctioning components.

SECTION III

Return To Table Of Contents

SCHEDULED MAINTENANCE

4.1 Introduction

Return To Table Of Contents

SECTION IV

MAINTENANCE / SERVICE

SECTION IV

MAINTENANCE / SER VICE INSTRUCTIONS

WARNING

Refer to the Operator Manual for

complete instructions on operating the table. Failure to do so could result in personal injury.

NOTE

Perform an operational test on the table after the repair is completed to confirm the repair was properly made and that

The following paragraphs contain removal, installation, repair, and adjustment procedures for the table.

all

malfunctions were repaired.

4.2 Motor Cover Assembly Removal / Installation

A. Removal

WARNING

Always disconnect the power cord

from the outlet before removing any of the table's covers/shrouds or making any repairs to prevent the possibility of electrical shock. Failure to comply with these instructions could result in severe personal injury or death.

A

2

3

1

MA394900

Figure 4-1. Motor Cover Assembly

Removal / Installation

4.3 Checking / Adding Oil To Motor Pump

A. Checking / Adding Oil

(1) Move the BASE DOWN, BACK DOWN, TILT

DOWN, and FOOT DOWN functions all the way down.

(1) Unplug table power cord from outlet. (2) Remove six screws (1, Figure 4-1) and motor

cover assembly (2) from back outer shroud (3).

B. Installation

(1) Install motor cover assembly (2) against back

outer shroud (3) and secure with six screws (1), making sure top edge of motor cover assembly is inserted behind lip (A) of back outer shroud.

(2) Plug table power cord into outlet.

(2) Remove motor cover assembly (Refer to

para 4.2).

(3) Remove filler cap (1, Figure 4-2) from motor

pump (2).

(4) Remove screw (3) and gasket (4) from motor

pump (2).

(5) Check oil level. If oil level in reservoir is not

even with oil level check hole, oil must be added.

(6) Place a rag under oil level check hole (A).

EQUIPMENT ALERT

Hydraulic system is designed for use with light grade mineral oil only. Failure to

comply could result in hydraulic system failure.

SECTION IV

3

4

2

1

A

B

Return To Table Of Contents

MAINTENANCE / SERVICE

4.4 Up Functions Shuttle Valve Removal / Installation

A. Removal

WARNING

Always disconnect the power cord

from the outlet before removing any of the table's covers/shrouds or making any repairs to prevent the possibility of electrical shock. Failure to comply with these instructions could result in severe personal injury or death.

(1) Unplug table power cord from outlet. (2) Remove motor cover (Refer to para 4.2).

NOTE

The up functions shuttle valve is lower than the oil level in the motor pump reservoir and oil will flow out of the up functions shuttle valve once the hose assembly is disconnected.

(3) Place drain pan (A) under up functions shuttle

valve (1, Figure 4-3).

MA395000

Figure 4-2. Checking / Adding Oil To Motor Pump

(7) Add oil to fill hole (B) until oil starts to run out of

oil level check hole (A).

(8) Install gasket (4) and screw (3) on motor

pump (2).

(9) Install filler cap (1) on motor pump (2).

(10) Move each function to its up and down limit

several times. Then repeat steps 1 thru 9.

(11) Install motor cover assembly (Refer to

para 4.2).

(12) Dispose of used oil in accordance with local

regulations.

(4) Disconnect hose assembly (2) from elbow (B)

of up functions shuttle valve (1).

(5) Remove up functions shuttle valve (1) from

motor pump (3).

B. Installation

(1) Coat two o-rings (C) on up functions shuttle

valve (1) with mineral oil or vaseline.

(2) Install up functions shuttle valve (1) in motor

pump (3).

(3) Connect hose assembly (2) to elbow (B) of up

functions shuttle valve (1).

(4) If necessary, add oil to motor pump (Refer to

para 4.3).

(5) Install motor cover assembly (Refer to

para 4.2).

(6) Plug table power cord into outlet.

(7) Dispose of used oil in accordance with local

regulations.

B

Return To Table Of Contents

SECTION IV

MAINTENANCE / SERVICE

NOTE

The down functions shuttle valve is slightly lower

C

than the oil level in the motor pump reservoir and oil will flow out of the down functions shuttle valve once the hose assembly is disconnected.

(3) Place rags or drain pan (A) under down

functions shuttle valve (1, Figure 4-4).

3

C

4

1

2

A

Figure 4-3. Up Functions Shuttle Valve

Removal / Installation

4.5 Down Functions Shuttle Valve Removal / Installation

A. Removal

WARNING

Always disconnect the power cord

from the outlet before removing any of the table's covers/shrouds or making any repairs to prevent the possibility of electrical shock. Failure to comply with these instructions could result in severe personal injury or death.

(1) Unplug table power cord from outlet. (2) Remove motor cover assembly (Refer to

para 4.2).

MA395100

2

1

3

B

A

MA395200

Figure 4-4. Down Functions Shuttle Valve

Removal / Installation

(4) Using a wrench to hold male connector (2)

stationary, loosen jam nut (B) of elbow (3). Disconnect elbow from male connector.

(5) Remove elbow (3) from down function shuttle

valve (1).

(6) Remove down functions shuttle valve (1) from

motor pump (4).

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

B. Installation

NOTE

The down functions shuttle valve is sent from factory with an elbow installed on it. Remove it per step 1.

(1) Remove elbow from down function shuttle

valve (1). Discard elbow.

(2) Coat two o-rings on down functions shuttle

valve (1) with mineral oil or vaseline.

(3) Install down functions shuttle valve (1) in motor

pump (4).

(4) Coat threads of male connector (2) and elbow

(3) with pipe thread tape or sealant.

(5) Install elbow (3) on down functions shuttle

valve (1).

(6) Connect elbow (3) to male connector (2) and

secure by tightening jam nut.

(5) Pull anti-cavitation solenoid valve wires (4) out

thru wire hole (B). (6) Disconnect hose assembly (6) from elbow (7). (7) Using a wrench to hold male connector (8)

stationary, loosen jam nut (C) of elbow (9).

Disconnect male connector (8) from elbow (9). (8) Remove elbow (7) and male connector (8) from

anti-cavitation solenoid valve (10).

2

10

C

7

1

8

(7) If necessary, add oil to motor pump (Refer to

para 4.3).

(8) Install motor cover assembly (Refer to

para 4.2).

(9) Plug table power cord into outlet.

(10) Dispose of used oil in accordance with local

regulations.

4.6 Anti-Cavitation Solenoid Valve Removal / Installation

A. Removal

(1) Unplug table power cord from outlet. (2) Remove motor cover assembly (Refer to

para 4.2).

(3) Remove two screws (1, Figure 4-5) and control

cover (2) from control panel (3).

6

9

4

B

Figure 4-5. Anti-cavitation Solenoid Valve

Removal / Installation

B. Installation

5

A

3

MA395300

EQUIPMENT ALERT

Do not coat last two threads of

elbow and male connector with teflon tape or sealant. Otherwise, little particles of the tape / sealant can break loose and can contaminate hydraulic system.

(4) Loosen two terminal screws (A); then tag and

disconnect anti-cavitation solenoid valve wires (4) from terminal block (5).

(1) Coat threads of elbow (7) and male connector

(8) with pipe thread tape or sealant.

(2) Install elbow (7) and male connector (8) on

Return To Table Of Contents

anti-cavitation solenoid valve (10). (3) Connect hose assembly (6) to elbow (7). (4) Coat threads of male connector (8) with pipe

thread tape or sealant.

SECTION IV

MAINTENANCE / SERVICE

5

6

(5) Connect elbow (9) to male connector (8) and

secure by tightening jam nut (C). (6) Feed two anti-cavitation solenoid valve wires

(4) thru wire hole (B). (7) Connect two anti-cavitation solenoid valve

wires (4) to terminal block (5) and secure by

tightening two terminal screws (A). (8) Install control cover (2) on control panel (3) and

secure with two screws (1). (9) Install motor cover assembly (Refer to

para 4.2).

(10) Plug table power cord into outlet.

4.7 Up Functions Relief Valve Removal / Installation

A. Removal

(1) If possible, raise TABLE UP function all the

way up.

4

3

2

8

1

A

7

(2) Unplug table power cord from outlet. (3) Remove motor cover assembly (Refer to

para 4.2).

(4) Remove four screws (1, Figure 4-6) and back

outer shroud (2) from left and right hand outer shrouds (3).

NOTE

The back inner shroud must be removed if it will obstruct removal of up functions relief valve.

(5) If necessary, remove eight screws (4) and

back inner shroud (5) from left and right hand inner shrouds (6).

Figure 4-6. Up Functions Relief Valve

Removal / Installation

NOTE

Oil will flow out of relief valve port when up functions relief valve is removed. Either have the new up functions relief valve ready to install or place a drain pan under relief valve port to catch oil.

(6) Remove up functions relief valve (7) from

motor pump (8).

B

MA395400

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

B. Installation

(1) Coat two o-rings (A) on up functions relief

valve (7) with mineral oil or vaseline.

EQUIPMENT ALERT

Make sure relief valve (7) has "600"

stamped on its hex head (B); it be stamped "L2". Failure to install proper relief valve will result in faulty table performance.

(2) Install up functions relief valve (7) in motor

pump (8).

(3) If removed, install back inner shroud (5) on left

and right inner shrouds (6) and secure with eight screws (4).

(4) Install back outer shroud (2) on left and right

hand outer shrouds (3) and secure with four screws (1).

(5) If necessary, add oil to motor pump (Refer to

para 4.3).

(6) Install motor cover assembly (Refer to

para 4.2). (7) Plug table power cord into receptacle. (8) Dispose of used oil in accordance with local

regulations.

must not

5

6

4

3

2

8

1

A

7

4.8 Down Functions Relief Valve Removal / Installation

B

A. Removal

(1) Unplug table power cord from outlet. (2) Remove motor cover assembly (Refer to

para 4.2).

(3) Remove four screws (1, Figure 4-7) and back

outer shroud (2) from left and right hand outer shrouds (3).

Figure 4-7. Down Functions Relief Valve

Removal / Installation

(4) If necessary, remove eight screws (4) and

back inner shroud (5) from left and right hand inner shrouds (6).

NOTE

The back inner shroud must be removed if it will obstruct removal of up functions relief valve.

Oil will flow out of relief valve port when down functions relief valve is removed. Either have the new down functions relief valve ready to install or place a drain pan under relief valve port to catch oil.

MA395500

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(5) Remove down functions relief valve (7) from

motor pump (8).

B. Installation

(1) Coat two o-rings (A) on down functions relief

valve (7) with mineral oil or vaseline.

EQUIPMENT ALERT

Make sure relief valve (7) has "L2"

stamped on its hex head (B); it be stamped "600". Failure to install proper relief valve will result in faulty table performance.

(2) Install down functions relief valve (7) in motor

pump (8).

(3) If removed, install back inner shroud (5) on left

and right inner shrouds (6) and secure with eight screws (4).

(4) Install back outer shroud (2) on left and right

hand outer shrouds (3) and secure with four screws (1).

must not

(5) If necessary, add oil to motor pump (Refer to

para 4.3).

(6) Install motor cover assembly (Refer to

para 4.2). (7) Plug table power cord into receptacle. (8) Dispose of used oil in accordance with local

regulations.

4.9 Motor Pump Assembly - Complete Removal / Installation

A. Removal

(1) Unplug table power cord from outlet. (2) Remove motor cover assembly (Refer to

para 4.2).

(3) Remove four screws (1, Figure 4-8) and back

outer shroud (2) from left and right hand outer shrouds (3).

3

5

10

16

4

6

13

2

11

1

8

12

14

15

A

Figure 4-8. Motor Pump Assembly - Complete Removal / Installation

B

7 9

MA395600

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(4) Remove two screws (4) and control cover (5)

from control panel (6).

(5) Loosen three terminal screws; then tag and

disconnect three motor pump wires (7) from

terminal block (8). (6) Pull motor pump wires (7) out thru wire hole. (7) Loosen two terminal screws; then tag and

disconnect anti-cavitation solenoid valve wires

(9) from terminal block (8).

(8) Install control cover (5) on control panel (6) and

secure with two screws (4).

(9) Install back outer shroud (2) on left and right

hand outer shrouds (3) and secure with four

screws (1). (10) Add oil to motor pump (Refer to para 4.3). (11) Install motor cover assembly (Refer to

para 4.2).

(8) Pull anti-cavitation solenoid valve wires (9) out

thru wire hole.

(9) Remove four nuts (10) from four motor

mounts (11).

(10) Disconnect hose assembly (12) from male

elbow (13). (11) Place a drain pan under elbow (14). (12) Disconnect hose assembly (15) from elbow

(14). Allow oil to drain into drain pan. (13) Remove motor pump assembly (16) from four

motor mounts (11).

B. Installation

(1) Install motor pump assembly (16) on four

motor mounts (11) and secure with four nuts

(10).

(2) Connect hose assembly (15) to elbow (14). (3) Connect hose assembly (12) to male el-

bow (13).

(4) Feed two anti-cavitation solenoid valve wires

(9) thru wire hole.

(12) Plug table power cord into outlet. (13) Dispose of used oil in accordance with local

regulations.

4.10 Motor Pump Removal / Installation

A. Removal

(1) Unplug table power cord from outlet. (2) Remove motor pump assembly - Complete

(Refer to para 4.9).

(3) Remove filler cap (A) and drain any remaining

oil into drain pan (See Figure 4-9).

(4) Using a wrench to hold male connector (1,

Figure 4-9) stationary, loosen jam nut (B) of elbow (2). Disconnect male connector/anticavitation solenoid valve (C) from elbow.

(5) Remove down functions shuttle valve (3) and

up functions shuttle valve (4) from motor pump (5).

(6) Remove two screws (6), lockwashers (7), and

motor base (8) from motor pump (5).

B. Installation

(5) Connect two anti-cavitation solenoid valve

wires (9) to terminal block (8) and secure by

tightening two terminal screws.

(6) Feed three motor pump wires (7) thru wire

hole.

(7) Connect three motor pump wires (7) to termi-

nal block (8) and secure by tightening three

terminal screws.

(1) Install motor base (8) on motor pump (5) and

secure with two lockwashers (7) and screws (6).

(2) Install up functions shuttle valve (4) and down

functions shuttle valve (3) on motor pump (5).

(3) Coat threads of male connector (1) with pipe

thread tape or sealant.

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

A

C

2

1

3

5

B

4

7

6

Figure 4-9. Motor Pump Removal / Installation

(4) Connect male connector (1)/anti-cavitation

solenoid valve (C) to elbow (2) and secure by

tightening jam nut (B).

(5) Install motor pump assembly (Refer to

para 4.9).

(6) Plug table power cord into outlet.

4.11 Motor Shaft Seal Removal / Installation

8

MA395700

NOTE

Reservoir will come off hard. Use a screwdriver to pry reservoir off of manifold block, but make sure not to damage o-ring.

(3) Remove four screws (1, Figure 4-10) and

reservoir (2) from manifold block (3). (4) Remove magnet (4) from strainer (5). (5) Remove four screws (6) and pump housing (7)

from manifold block (3). (6) Remove pump gear (8) and woodruff key (9)

from shaft of rotor assembly (10). (7) Remove four screws (11) and motor housing

(12) from manifold block (3). (8) Push rotor assembly (10) inward toward

manifold block (3); then remove retaining ring

(13) from end of rotor assembly shaft (A). (9) Remove rotor assembly (10) from manifold

block (3).

(10) Using a screwdriver, pry motor shaft seal (14)

out of manifold block (3).

B. Installation

(1) Clean all metal shavings off of all components. (2) Coat motor shaft seal (14) with vaseline or

mineral oil.

EQUIPMENT ALERT

Do not allow motor shaft seal to become cocked during installation or it will be-

come impossible to install without damaging it.

A. Removal

(1) Unplug table power cord from outlet. (2) Remove motor pump (Refer to para 4.10).

(3) Using a hammer and 3/4 inch socket, install

motor shaft seal (14) in manifold block (3). (4) Slide shaft of rotor assembly (10) thru manifold

block (3) and secure in place by installing

retaining ring (13) on end of rotor assembly

shaft.

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

12

10

11

B

3

14

6

A

2

4

13

7

5

1

8

9

MA395800

Figure 4-10. Motor Shaft Seal

Removal / Installation

(5) Install motor housing (12) on manifold block (3)

and secure with four screws (11).

(6) Install woodruff key (9) and pump gear (8) on

shaft of rotor assembly (10).

(7) Install pump housing (7) on manifold block (3)

and secure with four screws (6). (8) Install magnet (4) on strainer (5). (9) Make sure o-ring (B) on manifold block is

present and clean. Coat o-ring with mineral oil.

NOTE

Strainer may get in way when reservoir is being installed. If so, rotate strainer out of the way.

(10) Install reservoir (2) on manifold block (3) and

secure with four screws (1). (11) Install motor pump (Refer to para 4.10). (12) Plug table power cord into outlet.

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

4.12 Back Cylinder Removal / Installation

A. Removal

(1) Unplug table power cord from outlet. (2) Remove upholstered seat section (Refer to

steps 6 thru 8 of para 4.25).

(3) Remove four screws (1, Figure 4-11) and front

outer shroud (2) from left and right hand outer shrouds (3).

6

3

5

4

(6) Remove motor cover assembly (Refer to

para 4.2).

(7) Remove two screws (1, Figure 4-12) and

control cover (2) from control panel (3).

(8) Loosen two terminal screws (a); then tag and

disconnect back cylinder wires (4) from terminal block (5).

2

1

3

5

B

1

2

7

9

8

MA395900

Figure 4-11. Table Access

(4) Remove eight screws (4) and front inner

shroud (5) from left and right hand inner shrouds (6).

(5) Remove screw (7) and wire clip (8) securing

wires and hoses to base weldment (9).

A

4

Figure 4-12. Back Cylinder Wires

Disconnection / Connection

(9) Pull back cylinder wires (4) out thru wire

hole (B).

(10) Remove four screws (1, Figure 4-13) and back

cover (2) from back weldment (3).

(11) Cut two cable ties which are securing hose

assemblies (4 and 5) to back cylinder (6).

(12) While supporting back weldment (3), remove

four E-rings (7), two clevis pins (8), and partially separate back cylinder (6) from cylinder brackets (9). Fold back section over

onto seat section. (13) Tag hose assemblies (4 and 5). (14) Disconnect hose assembly (4) from back

cylinder (6).

MA396000

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(15) Disconnect hose assembly (5) from back

cylinder (6).

(16) Cut necessary cable ties and remove back

cylinder (6) from table.

3

8

7

2

A

7

9

4

6

1

8

5

(4) Secure hose assemblies (4 and 5) to back

cylinder (6) with two cable ties.

(5) Route back cylinder wires (4, Figure 4-12) thru

table.

(6) Feed back cylinder wires (4) thru wire hole (B). (7) Connect two back cylinder wires (4) to terminal

block (5) and secure by tightening two terminal

screws (A).

(8) Install control cover (2) on control panel (3) and

secure with two screws (1).

(9) Secure wires and hoses to base weldment (9,

Figure 4-11) with wire clip (8) and screw (7).

Install any cable ties removed during removal. (10) Install front inner shroud (5) on left and right

hand outer shrouds (6) and secure with eight

screws (4). (11) Install front outer shroud (2) on left and right

hand inner shrouds (3) and secure with four

screws (1).

B

7

C

MA396100

Figure 4-13. Back Cylinder Removal / Installation

B. Installation

NOTE

No sealant is required when connecting hose assemblies. The back cylinder has an o-ring in each port which seals the hose assemblies.

(1) Connect hose assembly (5, Figure 4-13) to

back cylinder (6).

(2) Connect hose assembly (4) to back cylin-

der (6).

(3) Install back cylinder (6) on cylinder brackets (9)

and secure with two clevis pins (8) through clevis (A) with four E-rings (7).

(12) Install upholstered seat section (Refer to step 6

of para 4.25). (13) Plug table power cord into outlet. (14) Lower BACK DOWN function all the way down.

EQUIPMENT ALERT

Tilt down function must be completely lowered for following step. Failure to do

so will result in incorrect adjustment.

(15) If back section

BACK DOWN function is completely lowered,

perform steps 16 thru 18. If back section

level when the BACK DOWN function is

completely lowered, go to step 19.

is not

level with floor when the

is

EQUIPMENT ALERT

The cylinder rod must be partially ex-

tended before performing step 17. If the cylinder rod is fully extended or retracted when step 17 is being performed, damage to seals will occurr.

(16) Raise BACK UP function up until cylinder rod is

extended halfway.

(17) Place a wrench on adjusting seats (B) of

Return To Table Of Contents

cylinder rod (C) and use it to rotate cylinder rod to adjust clevis up or down as necessary.

(18) Repeat steps 14 thru 17 until back section is

level when BACK DOWN function is completely lowered.

SECTION IV

MAINTENANCE / SERVICE

2

1

(19) Install back cover (2) on back weldment (3)

and secure with four screws (1).

(20) If necessary, add oil to motor pump (Refer to

para 4.3).

(21) Install motor cover assembly (Refer to

para 4.2).

4.13 Tilt Cylinder Removal / Installation

A. Removal

(1) If possible, lower TILT DOWN function all the

way down. (2) Raise FOOT UP function all the way up. (3) Unplug table power cord from outlet. (4) Remove motor cover assembly (Refer to

para 4.2). (5) Remove two screws (1, Figure 4-14) and

control cover (2) from control panel (3). (6) Loosen two terminal screws; then tag and

disconnect two tilt cylinder wires (4) from

terminal block (5). (7) Pull tilt cylinder wires (4) out thru wire hole.

5

B

A

4

Figure 4-14. Tilt Cylinder Wire

Disconnection / Connection

(12) Cut cable tie (A) which secures hose assem-

blies and wire harnesses to tilt cylinder (8).

WARNING

The foot end of table top must be

supported while removing tilt cylinder. Failure to do will allow table top to fall which could result in serious personal injury.

NOTE

Cut cable ties as necessary to remove tilt cylinder.

(13) While supporting foot end of table top, remove

four E-rings (10), two clevis pins (11), and tilt cylinder (8) from brackets (12).

MA396200

3

(8) Remove four screws (1, Figure 4-15) and front

outer shroud (2) from left and right hand outer shrouds (3).

(9) Remove eight screws (4) and front inner

shroud (5) from left and right hand inner shrouds (6).

(10) Disconnect return manifold (7) from rod end of

tilt cylinder (8).

(11) Disconnect power manifold (9) from base of tilt

cylinder (8).

B. Installation

(1) Install tilt cylinder (8, Figure 4-15) on brackets

(12) and secure with two clevis pins (11) and four E-rings (10).

WARNING

Make sure the safety cable (B) is

properly installed on the return and power manifolds. Failure to do so could result in serious personal injury to patient or table operator.

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(6) Feed tilt cylinder wires (4) thru wire hole (B) in

control panel (3).

7

6

3

10

12

E

D

6

5

3

4

1

2

(7) Connect two tilt cylinder wires (4) to terminal

block (5) and secure by tightening two terminal screws (A).

(8) Install control cover (2) on control panel (3) and

secure with two screws (1).

(9) Install any cable ties which were removed. (10) Plug table power cord into outlet. (11) Lower TILT DOWN function all the way down. (12) If seat section

TILT DOWN function is completely lowered, perform steps 13 thru 15. If seat section is level when the TILT DOWN function is completely lowered, go to step 16.

is not

level with floor when the

EQUIPMENT ALERT

11

10

C

8

the cylinder rod is fully extended or retracted when step 14 is being performed, damage to seals will occurr.

The cylinder rod (C) must be partially extended before performing step 14. If

B

A

10

9

12

Figure 4-15. Tilt Cylinder Removal / Installation

(2) Connect power manifold (9) to base of tilt

cylinder (8), making sure safety cable (B) is properly installed.

(3) Connect return manifold (7) to rod end of tilt

cylinder (8).

(4) Secure wire harnesses and hose assemblies to

tilt cylinder (8) with a cable tie.

(5) Route tilt cylinder wires (4, Figure 4-14) thru

table.

11

10

MA393600

(13) Raise TILT UP function up until cylinder rod is

extended halfway.

(14) Place a wrench on adjusting seats D, Figure 4-

15) of cylinder rod (C) and use it to rotate cylinder rod to adjust clevis (E) up or down as necessary.

(15) Repeat steps 11 thru 15 until seat section is

level when TILT DOWN function is completely lowered.

(16) Install front inner shroud (5) on left and right

hand inner shrouds (6) and secure with eight screws (4).

(17) Install front outer shroud (2) on left and right

hand outer shrouds (3) and secure with four screws (1).

(18) If necessary, add oil to motor pump (Refer to

para 4.3).

(19) Install motor cover assembly (Refer to

para 4.2).

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

4.14 Base Cylinder Removal / Installation

A. Removal

(1) Unplug table power cord from outlet. (2) Remove motor cover assembly (Refer to

para 4.2).

(3) Remove four screws (1, Figure 4-16) and back

outer shroud (2) from left and right hand outer shrouds (3).

6

5

3

10

4

8

9

7

(5) Remove four screws (7) and brace (8) from

base slide assembly (9). (6) Plug table power cord into outlet. (7) If BASE DOWN function is operable, place a

block (A) under middle slide of base slide

assembly (9). Then lower the BASE DOWN

function until the middle slide of the base slide

assembly is resting on block and pressure is

off clevis pin (10). If BASE DOWN function is

not operable, move table top to a horizontal

position and place supports under each end of

table. (8) Remove two screws (1, Figure 4-17) and

control cover (2) from control panel (3).

2

1

3

A

2

Figure 4-16. Base Cylinder Access

(4) Remove eight screws (4) and back inner

shroud (5) from left and right hand inner shrouds (6).

NOTE

The motor pump and control panel can be carefully pushed out of the way to allow a socket and ratchet to be used on the bottom two screws (7).

1

MA396400

5

B

A

4

Figure 4-17. Base Cylinder Wires

Disconnection / Connection

(9) Loosen two terminal screws (A); then tag and

disconnect base cylinder wires (4) from termi-

nal block (5).

(10) Pull base cylinder wires (4) out thru wire

hole (B).

MA396500

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

DANGER

Make sure table top is properly

secured from lowering or tipping over when base cylinder is disconnected from table top. Clevis pin (2, Figure 4-18) should not have any weight on it if table top is supported properly. Failure to have table top properly secured could result in serious personal injury or death.

(11) Remove hitch pin clip (1, Figure 4-18) and

clevis pin (2) from rod end (A) of base cylinder (3).

6

2

A

7

1

3

B

(14) Disconnect hose assembly (7) from base

cylinder (3).

(15) Place rags under base tee (8).

NOTE

When base tee is disconnected from base cylinder, oil will be free to flow out of the motor pump thru the base tee. Either be ready to install the new base cylinder or have drain pan and rags ready to catch the oil.

(16) Disconnect base tee (8) from base cylinder (3).

Remove base cylinder from table.

B. Installation

(1) Position base cylinder (3, Figure 4-18) on

table. (2) Connect base tee (8) to base cylinder (3). (3) Connect hose assembly (7) to base cylin-

der (3). (4) Secure hose assembly (7) to base cylinder (3)

with two cable ties (B). (5) Install base cylinder (3) on brackets (6) and

secure with clevis pins (2 and 5) and hitch pin

clips (1 and 4).

6

8

5

Figure 4-18. Base Cylinder Removal / Installation

(12) Remove hitch pin clip (4), clevis pin (5), and

partially separate base cylinder (3) from brackets (6).

(13) Cut two cable ties (B) securing hose assembly

(7) to base cylinder (3).

4

MA396600

(6) Feed base cylinder wires (4, Figure 4-17) thru

wire hole (B). (7) Connect two base cylinder wires (4) to terminal

block (5) and secure by tightening two terminal

screws (A). (8) Install control cover (2) on control panel (3) and

secure with two screws (1). (9) Plug table power cord into outlet.

(10) See Figure 4-16. Raise BASE UP function

slightly and remove block from under middle

slide of base slide assembly (9) or remove

supports from under table top.

(11) Lower BASE DOWN function all the way down.

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(12) See Figure 4-19. If there

inch (1.6 to 3.2 mm) gap (A) between inner member weldment (B) and top of middle slide (C) when the BASE DOWN function is completely lowered (it is especially important that the inner member weldment does not come into contact with top of middle slide), perform steps 13 thru 15. If gap is correct when the BASE DOWN function is completely lowered, go to step 16.

is not

a 1/16 to 1/8

B

A

(13) Raise BASE UP function up until cylinder rod is

extended halfway.

(14) Place a wrench on adjusting seats (D) of

cylinder rod (E) and use it to rotate cylinder rod

to adjust clevis (F) up or down as necessary.

(15) Repeat steps 11 thru 15 until there is a 1/16 to

1/8 inch (1.6 to 3.2 mm) gap (A) between inner

member weldment (B) and middle slide (C) of

base slide assembly when the BASE DOWN

function is completely lowered.

(16) Install brace (8, Figure 4-16) on base slide

assembly (9) and secure with four screws (7).

(17) Install any cable ties (B) removed during

removal.

(18) Install back inner shroud (5) on left and right

hand inner shrouds (6) and secure with eight

screws (4).

(19) Install back outer shroud (2) on left and right

hand outer shrouds (3) and secure with four

screws (1).

C

1

F

D

E

MA396700

Figure 4-19. Base Cylinder Clevis Adjustment

EQUIPMENT ALERT

The cylinder rod (E) must be partially ex

-tended before performing step 14. If the cylinder rod is fully extended or retracted when step 14 is being performed, damage to seals will occurr.

(20) If necessary, add oil to motor pump (Refer to

para 4.3).

(21) Install motor cover assembly (Refer to

para 4.2).

4.15 Foot Cylinder Removal / Installation

A. Removal

(1) If possible, raise FOOT UP function all the

way up. (2) Unplug table power cord from outlet. (3) Remove motor cover assembly (Refer to

para 4.2). (4) Remove two screws (1, Figure 4-20) and

control cover (2) from control panel (3). (5) Loosen two terminal screws (A); then tag and

disconnect two foot cylinder wires (4) from

terminal block (5).

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

1

5

4

Figure 4-20. Foot Cylinder Wire

Disconnection / Connection

(6) Pull foot cylinder wires (4) out thru wire

hole (B).

B

A

MA396800

2

6

5

3

4

1

2

MA396900

Figure 4-21. Shrouds Removal / Installation

(14) Support foot section of table top and then

remove hitch pin clip (8), clevis pin (9), two E-

rings (10), clevis pin (11), and foot cylinder (5)

from brackets (12).

(7) Remove four screws (1, Figure 4-21) and front

outer shroud (2) from left and right hand outer shrouds (3).

(8) Remove eight screws (4) and front inner

shroud (5) from left and right hand inner shrouds (6).

(9) Cut cable ties (D) securing foot cylinder wire

harness (1, Figure 4-22).

(10) Remove screw (2) and wire clip (3) securing

foot cylinder wire harness (1) to seat weldment (4).

(11) Cut cable ties securing hose assemblies to foot

cylinder (5).

(12) Disconnect hose assembly (6) from foot

cylinder (5).

(13) Disconnect hose assembly (7) from foot

cylinder (5).

B. Installation

(1) Install foot cylinder (5, Figure 4-22) on brackets

(12) and secure with clevis pin (11), two E-

rings (10), clevis pin (9), and hitch pin clip (8). (2) Connect hose assembly (7) to foot cylinder (5). (3) Connect hose assembly (6) to foot cylinder (5). (4) Secure hose assemblies (6 and 7) to foot

cylinder (5) with cable ties. (5) Secure foot cylinder wire harness (1) to seat

weldment (4) with wire clip (3) and screw (2). (6) Feed foot cylinder wires (4, Figure 4-20) thru

wire hole (B) in control panel (3). (7) Connect two foot cylinder wires (4) to terminal

block (5) and secure with two terminal

screws (A). (8) Install control cover (2) on control panel (3) and

secure with two screws (1).

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(15) Install any cable ties (D) removed during

removal.

12

8

6

9

5

12

4

3

(16) Install front inner shroud (5, Figure 4-22) on left

and right hand inner shrouds (6) and secure

with eight screws (4).

(17) Install front outer shroud (2) on left and right

hand outer shrouds (3) and secure with four

screws (1).

C

2

B

A

10

D

7

10

Figure 4-22. Foot Cylinder Removal / Installation

(9) Plug table power cord into outlet. (10) Raise FOOT UP function all the way up. (11) If foot section

when FOOT UP function is completely raised, perform steps 12 thru 14. See Figure 4-22. If foot section is level when the FOOT UP function is completely raised, go to step 15.

is not

level with seat section

11

1

MA397000

(18) If necessary, add oil to motor pump (Refer to

para 4.3).

(19) Install motor cover assembly (Refer to

para 4.2).

(20) Plug table power cord into outlet.

4.16 Time Delay Relay Removal / Installation

A. Removal

(1) Unplug table power cord from outlet. (2) Remove motor cover assembly (Refer to

para 4.2).

(3) Remove two screws (1, Figure 4-23) and

control cover (2) from control panel (3).

(4) Tag and disconnect two wires (4) from termi-

nals of time delay relay (5).

EQUIPMENT ALERT

The cylinder rod (A) must be partially ex

-tended before performing step 13. If the cylinder rod is fully extended or retracted when step 13 is being performed, damage to seals will occurr.

(12) Lower FOOT DOWN function down until

cylinder rod is extended halfway.

(13) Place a wrench on adjusting seats (B) of

cylinder rod and use it to rotate cylinder rod to adjust clevis (C) up or down as necessary.

(14) Repeat steps 10 thru 14 until foot section is

level with seat section when FOOT UP function is completely raised.

(5) Remove nut (6), screw (7), washer (8), and

time delay relay (5) from control panel (3).

B. Installation

(1) Install time delay relay (5) on control panel (3)

and secure with washer (8), screw (7), and nut (6).

(2) Connect two wires (4) to terminals of time

delay relay (5).

(3) Install control cover (2) on control panel (3) and

secure with two screws (1).

(4) Install motor cover assembly (Refer to

para 4.2).

(5) Plug table power cord into outlet.

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

1

6

3

5

8

2

4

7

MA397100

6

5

3

4

1

2

Figure 4-23. Time Delay Relay

Removal / Installation

4.17 Capacitors Removal / Installation

A. Removal

(1) If possible, raise FOOT UP function all the

way up. (2) Unplug table power cord from outlet. (3) Remove four screws (1, Figure 4-24) and front

outer shroud (2) from left and right hand outer

shrouds (3). (4) If necessary to gain access to capacitors,

remove eight screws (4) and front inner shroud

(5) from left and right hand inner shrouds (6). (5) Cut cable tie (A) securing wires to capacitor

(7). (6) Using a screwdriver, pry tab (B) of capacitor

mounting bracket (8) upward and remove

capacitor (7) from capacitor mounting bracket. (7) Remove capacitor cap (9) from capacitor (7).

B

C

12

13

11

14

8

15

B

9

10

A

7

CA397200

Figure 4-24. Capacitors Removal / Installation

WARNING

A capacitor contains stored electricity.

Never touch terminals of a capacitor, even if power has been shut off or disconnected. Always discharge capacitor before touching capacitor terminals or wires. Failure to comply with these instruction could result in serious personal injury or death.

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(8) Discharge capacitor (7). (9) Disconnect wires (10 and 11) from terminals of

capacitor (7).

(10) Using a screwdriver, pry tab of capacitor

mounting bracket (12) upward and remove capacitor (13) from capacitor mounting bracket.

(11) Remove capacitor cap (14) from capacitor

(13).

WARNING

A capacitor contains stored electricity.

Never touch terminals of a capacitor, even if power has been shut off or disconnected. Always discharge capacitor before touching capacitor terminals or wires. Failure to comply with these instruction could result in serious personal injury or death.

(12) Discharge capacitor (13). (13) Disconnect wires (11 and 15) from terminals of

capacitor (13).

B. Installation

(1) Connect capacitor wires (11 and 15) to termi-

nals of capacitor (13). (2) Install capacitor cap (14) on capacitor (13). (3) Position bottom of capacitor (13) on capacitor

mounting bracket (12) and then push the top of

the capacitor in. Using a screwdriver, force tab

(B) of capacitor mounting bracket (12) down

over catch (C). (4) Connect capacitor wires (10 and 11) to termi-

nals of capacitor (7). (5) Install capacitor cap (9) on capacitor (7).

(8) If removed, install front inner shroud (5) on left

and right hand inner shrouds (6) and secure with eight screws (4).

(9) Install front outer shroud (2) on left and right

hand outer shrouds (3) and secure with four screws (1).

(10) Plug table power cord into outlet.

4.18 Chain Assembly Adjustment

A. Adjustment

(1) Raise TABLE UP function all the way up. (2) Unplug table power cord from outlet. (3) Remove four screws (1, Figure 4-25) and front

outer shroud (2) from left and right hand outer shrouds (3).

(4) Remove eight screws (4) and front inner

shroud (5) from left and right hand inner shrouds (6).

(5) Loosen four screws (7).

EQUIPMENT ALERT

Adjust chains so they are tight, yet

have a slight spring back. Also, adjust chains so there is an equal amount of tension on each chain. Failure to do so will result in chains loosening earlier and uneven wear.

(6) Insert a pry bar or large screwdriver into

adjustment gap (A) and pry downward on idler adjustment weldment (8) until chains (9) are tight, but not drum tight. Tighten four screws (7).

(7) Install front inner shroud (5) on left and right

hand inner shrouds (6) and secure with eight screws (4).

(6) Position bottom of capacitor (7) on capacitor

mounting bracket (8) and then push the top of the capacitor in. Using a screwdriver, force tab of capacitor mounting bracket (8) down over catch.

(7) Install cable tie (A) to secure wire to capaci-

tor (7).

(8) Install front outer shroud (2) on left and right

hand outer shrouds (3) and secure with four screws (1).

(9) Plug table power cord into outlet.

SECTION IV

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MAINTENANCE / SERVICE

6

3

(3) Unplug table power cord from outlet. (4) Remove motor cover assembly (Refer to

5

4

1

para 4.2).

(5) Remove four screws (1, Figure 4-26) and back

outer shroud (2) from left and right hand outer shrouds (3).

(6) Remove eight screws (4) and back inner

shroud (5) from left and right hand inner shrouds (6).

(7) Remove four screws (7) and front outer shroud

(8) from left and right hand outer shrouds (3).

2

7

9

8

A

Figure 4-25. Chain Assembly Adjustment

4.19 Base Slide Assembly Removal / Installation

A. Removal

(1) If possible, raise TABLE UP function all the

way up.

MA397500

(8) Remove eight screws (9) and front inner

shroud (10) from left and right hand inner shrouds (6).

(9) Remove six screws (11), washers (12), and left

and right hand inner shrouds (6) from base slide assembly (13).

(10) Remove six screws (14) and left and right hand

outer shrouds (3) from base weldment (15).

WARNING

The supports must be capable of

holding up table top after table top is disconnected from base slide assembly and the base slide assembly is removed. Failure to support table top properly could result in table top falling out-of-control which could result in serious personal injury or death.

(11) Place supports (A, Figure 4-27) under foot

section (B) and head section (C) of table top, making sure weight of table top (D) is being supported by supports. If necessary, plug table power cord into outlet and lower table top onto supports. Unplug table power cord from outlet.

(12) Remove two E-rings (1, Figure 4-27), clevis pin

(2), and separate tilt cylinder (3) from bracket (4).

(2) Move the back, seat, and foot sections of the

table top to a horizontal position.

(13) Loosen four setscrews (5). Remove two tilt

pivot pins (6) from base slide assembly (7).

SECTION IV

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MAINTENANCE / SERVICE

4

5

6

13

9

10

6

7

3

12

11

14

8

2

3

1

Figure 4-26. Shrouds Removal / Installation

DANGER

Make sure table top (D) is properly

supported for the following step. Table top will rest only on supports after this step. Also do not touch any wires inside of table when power cord is plugged in. This could result in electrical shock. Failure to comply with this warning could result in serious personal injury or death.

15

MA397600

(14) Plug table power cord into outlet. Lower

TABLE DOWN function all the way down. Unplug table power cord from outlet.

WARNING

Make sure base slide assembly is fully

retracted (collapsed) before disconnecting base cylinder. Failure to do so will result in base slide assembly collapsing after base cylinder is disconnected which could result in serious personal injury.

SECTION IV

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MAINTENANCE / SERVICE

D

C

5

18

6

7

11

9

A

B

G

8

F

10

3

1

2

15

4

7

1

12

14

Figure 4-27. Base Slide Assembly Removal / Installation

13

16

17

E

MA470400

SECTION IV

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MAINTENANCE / SERVICE

(15) Remove hitch pin clip (8), clevis pin (9), and

separate rod of base cylinder (10) from

bracket (11). (16) Remove capacitors (E, [Refer to para 4.17]). (17) Remove four nuts (12), four screws (13), and

two capacitor mounting brackets (14) from

base slide assembly (7). (18) Disconnect spring (15) from base slide assem-

bly (7). (19) Remove eight screws (16) from base slide

assembly (7).

NOTE

If necessary, remove four screws and brace (F) to allow base slide assembly to be pulled over base cylinder.

(20) With the help of an assistant, remove base

slide assembly (7) from base weldment (17).

NOTE

Install beveled edge of tilt pivot pins first. The beveled edge allows the tilt pivot pins to be started more easily.

(7) Raise BASE UP function until base slide

assembly (7) is aligned with seat weldment (18). Secure base slide assembly to seat weldment with two tilt pivot pins (6).

(8) Secure tilt pivot pins (6) in place by tightening

four setscrews (5).

(9) Install base of tilt cylinder (3) on bracket (4)

and secure with clevis pin (2) and two E-rings (1).

(10) Remove supports (A) from under head section

(C) and foot section (B) of table top (D).

(11) Install left and right hand outer shrouds (3,

Figure 4-26) on base weldment (15) and secure with six screws (14).

B. Installation

(1) With the help of an assistant, install base slide

assembly (7, Figure 4-27) on base weldment

(17), making sure base cylinder (10) gets

inserted between brace (F) and base slide

assembly.

(2) Secure base slide assembly (7) on base

weldment (17) with eight screws (16).

(3) Connect spring (15) to base slide assembly (7). (4) Install two capacitor mounting brackets (14) on

base slide assembly (7) and secure with four

screws (13) and nuts (12).

(5) Install capacitors (F, [Refer to para 4.17]). (6) Install rod end (G) of base cylinder (10) on

bracket (11) and secure with clevis pin (9) and

hitch pin clip (8).

(12) Install left and right hand inner shrouds (6) on

base slide assembly (13) and secure with six washers (12) and screws (11).

(13) Install front inner shroud (10) on left and right

hand inner shrouds (6) and secure with eight screws (9).

(14) Install front outer shroud (8) on left and right

hand outer shrouds (3) and secure with four screws (7).

(15) Install back inner shroud (5) on left and right

hand inner shrouds (6) and secure with eight screws (4).

(16) Install back outer shroud (2) on left and right

hand outer shrouds (3) and secure with four screws (1).

(17) Install motor cover assembly (Refer to

para 4.2).

(18) Plug table power cord into outlet.

SECTION IV

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MAINTENANCE / SERVICE

4.20 Headrest Adjustment

4.21 Headrest Handle Handle Stops Adjustment

A. Adjustment

(1) Unlock lock handle (1, Figure 4-28). (2) Loosen setscrew (2). (3) Tighten adjusting screw (3) slightly; then lock

lock handle (1). Repeat this step until axis (4) has the strongest possible holding power, but operation of lock handle is not too difficult.

(4) Tighten setscrew (2).

3

2

A. Adjustment

(1) Loosen nut (1, Figure 4-29). (2) Push on upper lock handle until it reaches a

point where the upper lock handle wants to lock itself by going over center; then allow upper lock handle to go over center a few degrees. Hold the upper lock handle in this position and adjust stop screw (2) so the upper lock handle will be forced to stop in this position each time it is locked.

(3) Tighten nut (1).

1

2

1

4

Figure 4-28. Headrest Adjustment

MA470500

MA470600

Figure 4-29. Headrest Handles

Handle Stops Adjustment

4.22 Typical Foot Switch Removal /

Return To Table Of Contents

Installation

SECTION IV

MAINTENANCE / SERVICE

6

A. Removal

WARNING

The foot control contains high voltage

(115 VAC) when the table power cord is plugged in. Unplug table power cord before disassembling foot control to prevent electrical shock. Failure to do so could result in serious personal injury or death.

(1) Unplug table power cord from outlet. (2) Remove two screws (1, Figure 4-30) and

partially separate foot switch bracket (2) from foot control casting (3).

(3) Remove screw (4), spacer (5), and pedal (6)

from foot switch bracket (2).

(4) Tag and disconnect four wires (7) from termi-

nals of foot switch (8).

(5) Remove two nuts (9), washers (10), screws

(11), and foot switch (8) from foot switch bracket (2).

B. Installation

10

7

9

8

5

B

7

4

A

C

11

2

3

1

MA398100

Figure 4-30. Typical Foot Switch

Removal / Installation

(1) Install foot switch (8) on foot switch bracket (2)

and secure with two screws (11), washers (10), and nuts (9).

(2) Connect four wires (7) to terminals of foot

switch (8).

(3) Ensure springs (A) and spacers (C) are in

position and have not fallen off.

(4) Install pedal (6) on foot switch bracket (2) and

secure with spacer (5) and screw (4), making sure pedal is mounted on pivot spacer (B)).

(5) Install foot switch bracket (2) on foot control

casting (3) and secure with two screws (1).

(6) Plug table power cord into outlet.

4.23 Upholstery Removal / Installation

A. Removal

(1) Move table top to flat position.

Upholstered Headrest Assembly Removal

(2) Unlock (A) three locking tabs (1, Figure 4-31)

by pulling on locking tabs until locking tabs are free of three studs (2).

(3) Remove upholstered headrest assembly (3)

from headboard pivot mount (4) by pulling upholstered headrest assembly straight off.

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

Upholstered Back Section Removal

NOTE

Locking tabs are in paper roll holder cavity.

(4) Unlock (A) two locking tabs (5) by pulling on

locking tabs until locking tabs are free of studs (6).

(5) On a two piece seat & back upholstery set,

raise upward on head end of upholstered back section (7), approximately 1" (2.54 cm), until two studs (6) are free of back weldment (8); then slide upholstered back section approximately 1 in. (2.5 cm) toward head end of table until stud (9) is in rounded part of locking slot (C). Lift upholstered back section (7) straight up and remove from back weldment (8).

NOTE

The upholstery may be difficult to raise up because there is a velcro strip holding the upholstered back down.

On a one piece seat & back upholstery set, raise upward on upholstered back section (7) until two studs (6) are free of back weldment (8); then swing upholstered back section (7) upward so that it rests against upholstered seat section (12).

Upholstered Leg Rest Removal

(9) Raise FOOT UP function all the way up.

(10) Unlock (A) two locking tabs (15) by pulling on

locking tabs until locking tabs are free of studs (16).

(11) Remove upholstered leg rest (17) from foot

extension weldment (18) by pulling straight up.

Upholstered Foot Rest Removal

(12) Unlock (A) three locking tabs (19) by pulling on

locking tabs until locking tabs are free of three studs (20).

(13) Remove upholstered foot rest (21) from foot

extension weldment (18) by pulling straight up.

Side Panel Insert Removal

(14) Using an index finger, reach thru access hole

(E) and push outward on side panel insert (22) until bottom edge of side panel insert can be grasped by the other hand. Pull outward on bottom of side panel insert until it "pops" off of side panel (23).

B. Installation

Upholstered Seat Section Removal

(6) Lower FOOT DOWN function all the way

down.

(7) Unlock (A) two locking tabs (10) by pulling on

locking tabs until locking tabs are free of studs (11).

(8) Raise upward on foot end of upholstered seat

section (12), approximately 1" (2.54 cm), until two studs (11) are free of seat weldment (13); then slide upholstered seat section approximately 1 in. (2.5 cm) toward foot end of table until two studs (14) are in rounded part of locking slots (D). Lift upholstered seat section (12) straight up and remove from seat weldment (13).

Side Panel Insert Installation

(1) Insert one end of side panel insert (22) into one

of the panel slots (F) on side panel (23). Flex side panel insert in the middle and then insert free end of side panel insert into remaining panel slot (F) on other end of side panel. Work side panel insert into proper position.

Upholstered Foot Rest Installation

(2) Install upholstered foot rest (21) on foot

extension weldment (18) and secure by locking three locking tabs (19) onto three studs (20).

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

9

2

4

6

A

B

7

1"

5

1

3

1"

8

C

*

11

14

12

10

22

F

23

E

18

21

D

13

16

17

18

20

15

19

MA470700

Figure 4-31. Upholstery Removal / Installation

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

Upholstered Leg Rest Installation

(3) Install upholstered leg rest (17) on foot exten-

sion weldment (18) and secure by locking (B) two locking tabs (15) onto two studs (16).

(4) Lower FOOT DOWN function all the way

down.

Upholstered Seat Section Installation

DANGER

At completion of following step, ensure

that upholstered seat section is secure by lifting up on its edges. Failure to secure upholstered seat section properly could result in serious injury to patient.

(5) Install head end of upholstered seat section

(12) on seat weldment (13),

studs (14) are inserted in rounded part of locking slots (D)

section (12) toward head end of table until two studs (11) fit thru stud holes in seat weldment (13). Secure upholstered seat section (12) in place by locking two locking tabs (10) onto two studs (11).

; then slide upholstered seat

making sure two

NOTE

On a one piece seat & back upholstery set, a strip of velcro is used instead of a stud (9) and locking slot (C). If installing upholstered seat section for the first time, the backing from the velcro strip must be removed and it must be firmly applied to the back weldment (8).

On a one piece seat & back upholstery set, lower upholstered back section (7) down onto back weldment (8),

making sure two studs (6) are inserted in two stud holes in back weldment.

(C) in place by locking two locking tabs (5) onto two studs (6).

Upholstered Headrest Assembly Installation

(7) Install upholstered headrest assembly (3) on

headboard pivot mount (4) and secure by locking three locking tabs (1) onto three studs (2).(5) Lower FOOT DOWN function all the way down.

Secure upholstered back section

4.24 Hydraulic System Flushing Procedure

Upholstered Back Section Installation

DANGER

At completion of following step, ensure

that upholstered back section is secure by lifting up on its edges. Failure to secure upholstered back section properly could result in serious injury to patient.

NOTE

Locking tabs are in paper roll holder cavity.

(6) On a two piece seat & back upholstery set,

install foot end of upholstered back section (7) on back weldment (8),

inserted in rounded part of locking slot (C);

then slide upholstered back section (7) toward foot end of table until two studs (6) fit thru stud holes in back weldment (8). Secure upholstered back section (7) in place by locking (B) two locking tabs (5) onto two studs (6).

making sure stud (9) is

NOTE

The following procedure is recommended for the following reasons:

• The hydraulic system is excessively contaminated with dirt particles or water, causing repeated malfunctions of hydraulic components.

• An oil other than light weight mineral oil has been added to the hydraulic system, causing the table to malfunction or perform erratically.

A. Flushing Procedure

(1) Lower TABLE DOWN

DOWN way down.

(2) Remove motor cover assembly (Refer to

para 4.2).

, ,

, and FOOT DOWN functions all the

, ,

, BACK DOWN

, ,

, TILT

, ,

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

(3) Remove filler cap (1, Figure 4-32) from reser-

voir (2).

(4) Get a suitable drain pan with a capacity of

approximately 2 quarts (1.9 liters).

(5) Using a syringe or suction device, remove all

oil from the reservoir (2). (6) Refill reservoir (2) with light grade mineral oil. (7) Disconnect hose (A) from down functions

shuttle valve (3) and place end of hose in drain

pan. (8) Raise TABLE UP

FOOT UP functions all the way up, while

making sure to keep refilling reservoir (2) with

light grade mineral oil as necessary. (9) Connect hose (A) to down functions shuttle

valve (3).

(10) Disconnect hose (B) from up functions shuttle

valve (4) and place end of hose in drain pan.

, ,

, BACK UP

, ,

, TILT UP

, ,

, and

, ,

(11) Lower TABLE DOWN

DOWN way down, while making sure to keep refilling reservoir (2) with light grade mineral oil as necessary.

(12) Connect hose (B) to up functions shuttle

valve (4).

(13) Repeat steps 7 thru 12 until oil being removed

is clear and contains no dirt particles.

(14) Run all the functions up and down until all air is

purged from the hydraulic system.

(15) Lower all functions; then check oil level and

add or remove oil as necessary (Refer to para

4.3).

(16) Install motor cover assembly (Refer to

para 4.2).

(17) Dispose of used oil in accordance with local

regulations.

, ,

, and FOOT DOWN functions all the

, ,

, BACK DOWN

, ,

, TILT

, ,

1

2

3

2

A

C

4

B

C

MA398300

Figure 4-32. Hydraulic System Flushing Procedure

SECTION IV

Return To Table Of Contents

MAINTENANCE / SERVICE

SCHEMATICS AND DIAGRAMS

Return To Table Of Contents

SECTION V

SCHEMATICS AND DIAGRAMS

SECTION V

5.1 Electrical Schematics / Wiring Diagrams

Figures 5-1 thru 5-2 illustrate the logic/current flow and

WHITE / BLACK

ANTI-CAVITATION SOLENOID VALVE

BLACK

TIME DELAY RELAY

2

1

WHITE

TERMINAL

BLOCK

INTERNAL VIEW OF FOOT SWITCHES

4

3

2

FOOT SWITCH

IN OFF

POSITION

3

1

2

FOOT SWITCH

BLACK (115 VAC) GREEN / YELLOW

WHITE (NEUTRAL)

IN ON

POSITION

120 V.A.C. 12 AMPS

60 HZ.

1 2 3 4 5 6 7 8 9 10 11

4 1

wiring connections between the electrical components in the table. Record serial number of table being worked on in order to determine which electrical schematic or wiring diagram to use.

WHITE / BLACK

CAPACITORS

(124 - 149 MFD 250 VAC)

FOOTSWITCH ASSEMBLY

(NOTE: IF AN UP FOOT SWITCH & DOWN

FOOT SWITCH ARE ENERGIZED AT THE SAME

TIME, THE CIRCUIT BECOMES INOPERATIVE)

TILT UP

3

2 4

1

3

2 4

1

3

2 4

1

3

2 4

12

BLACK

RED / BLACK

ORANGE

WHITE / BLACK

WHITE

RED

BLUE

GREEN (GROUND)

4

FOOT DOWN

1 3

FOOT UP

2 4

TILT DOWN

1 3

2 4

BACK DOWN

1 3

BACK UP

2 4

TABLE DOWN

1 3

TABLE UP

T1

MOTOR

PUMP

T2

YELLOW

BLUE

REDT3

WHITE

Figure 5-1. Wiring Diagram

FOOT CYLINDER

TILT CYLINDER

BACK CYLINDER

BASE CYLINDER

BLACK

MA470200

SECTION V

Return To Table Of Contents

SCHEMATICS AND DIAGRAMS

120 V.A.C. 12 AMPS

60 HZ.

GREEN / YELLOW

BLACK

RED

WHITE

FOOT SWITCHES

FOOT DOWN

4

3

BLACK

ANTI-CAVITATION SOLENOID VALVE

CAPACITORS

T2

M

T3

MOTOR

PUMP

T1

BLACK

RED

1

FOOT UP

3

BLACK

2

BLACK

TILT DOWN

4

1

TILT UP

3

BLACK

2

BLACK

BACK DOWN

4

1

BACK UP

3

BLACK

2

BLACK

TABLE DOWN

4

2

RED / BLACK

4

1

3 2

ORANGE

4 1

3 2

WHITE / BLACK

4

1

3

BLUE

BLACK

BLUE

BLACK

BLUE

WHITE

TILT CYLINDER SOLENOID

VALVE

BACK CYLINDER SOLENOID

VALVE

BASE CYLINDER SOLENOID

VALVE

BLACK

FOOT

CYLINDER

SOLENOID

VALVE

WHITE

TIME DELAY RELAY

WHITE

1

TABLE UP

3

BLACK

2

BLACK

2

WHITE

BLUE

4

1

Figure 5-2. Electrical Schematic

MA470300

SECTION V

Return To Table Of Contents

SCHEMATICS AND DIAGRAMS

5.2 Hydraulic Flow Diagrams

Figure 5-3 illustrates the hydraulic oil flow through the

UP FUNCTIONS HYDRAULIC OIL FLOW

CYLINDER

ROD

BASE

CYLINDER

SOLENOID

VALVE

(OPEN)

CYLINDER

ROD

TILT

CYLINDER

SOLENOID

VALVE

(CLOSED)

table when an up function is selected. Figure 5-4 illustrates the hydraulic oil flow through the table when a down function is selected.

CYLINDER

ROD

BACK

CYLINDER

SOLENOID

VALVE

(CLOSED)

CYLINDER

ROD

FOOT

CYLINDER

SOLENOID

VALVE

(CLOSED)

ANTI-CAVITATION

SOLENOID VALVE

(OPEN)

SUCTION PRESSURE RETURN

RESERVOIR

PORT

(OPEN)

RESERVOIR

CHECK VALVE

(OPEN)

DOWN FUNCTIONS

SHUTTLE VALVE

(CLOSED)

DOWN FUNCTIONS

RELIEF VALVE

(CLOSED)

CHECK

BALL

SHUTTLE

GEARS

PUMP

FILTER

UP FUNCTIONS

SHUTTLE VALVE

(OPEN)

UP FUNCTIONS

RELIEF VALVE

(CLOSED)

CHECK

BALL

RESERVOIR

PORT

(CLOSED)

RESERVOIR

CHECK VALVE

(CLOSED)

RESERVOIR

MA225300

Figure 5-3. Up Functions Hydraulic Flow Diagram

SECTION V

Return To Table Of Contents

SCHEMATICS AND DIAGRAMS

DOWN FUNCTIONS HYDRAULIC OIL FLOW

CYLINDER

ROD

BASE CYLINDER SOLENOID

VALVE

(OPEN)

CYLINDER

ROD

TILT

CYLINDER

SOLENOID

VALVE

(CLOSED)

DOWN FUNCTIONS

SHUTTLE VALVE

(OPEN)

CHECK

BALL

CYLINDER

ROD

BACK CYLINDER SOLENOID

VALVE

(CLOSED)

UP FUNCTIONS

SHUTTLE VALVE

(CLOSED)

CYLINDER

ROD

FOOT

CYLINDER

SOLENOID

VALVE

(CLOSED)

CHECK

BALL

ANTI-CAVITATION

SOLENOID VALVE

(OPEN)

RESERVOIR

(CLOSED)

RESERVOIR

CHECK VALVE

(CLOSED)

SUCTION PRESSURE RETURN

SHUTTLE

PUMP

GEARS

PORT

DOWN FUNCTIONS

RELIEF VALVE

(CLOSED)

FILTER

UP FUNCTIONS

RELIEF VALVE

(CLOSED)

Figure 5-4. Down Functions Hydraulic Flow Diagram

RESERVOIR

PORT

(OPEN)

RESERVOIR

CHECK VALVE

(OPEN)

RESERVOIR

MA225200

SECTION VI

Return To Table Of Contents

PARTS LIST

6.1 Introduction

The illustrated parts list provides information for identifying and ordering the parts necessary to maintain the unit in peak operating condition. Refer to paragraph 1.5 for parts ordering information.

The parts list also illustrates disassembly and assembly relationships of parts.

6.2 Description of Columns

The

Item

column of the parts list gives a component its own unique number. The same number is given to the component in the parts illustration. This allows a part number of a component to be found if the technician can visually spot the part on the illustration. The technician simply finds the component in question on the illustration and notes the item number of that component. Then, he finds that item number in the parts list. The row corresponding to the item number gives the technician the part number, a description of the component, and quantity of parts per subassembly. Also, if a part number is known, the location of that component can be determined by looking for the item number of the component on the illustration.

SECTION VI

PARTS LIST

The

Qty.

column lists the number of units of a particular component that is required for the subassembly. The letters “AR” denote “as required” when quantities of a particular component cannot be determined, such as: adhesive.

Bullets { • } in the column show the indenture level of a component. If a component does not have a bullet, it is a main component of that illustration. If a component has a bullet, it is a subcomponent of the next component listed higher in the parts list than itself that does not have a bullet. Likewise, if a component has two bullets, it is a subcomponent of the next component listed higher in the parts list than itself that has only one bullet.

Part No.

column and the

Description

6.3 Torque Specifications and Important

Assembly Notes

When specific assembly torque specifications, measurements, or procedures have been identified, by our engineering department, as required to assure proper function of the unit, those torque specifications measurements, and procedures will be noted on the parts illustrations. Adherence to these requirements is essential.

The

Part No.

that component. The

Description

of the component.

column lists the MIDMARK part number for

column provides a physical description

Pictorial Index

Return To Table Of Contents

1

SECTION VI

4

PARTS LIST

2

5

MIDMARK

318

11

10

3

12

Used on units with Serial Number KZ-1000

318-001 Oral Surgery Table 115 V.

1 • •Back Components............................ 6-4

2 • •Upholstery Set - Thermoform ........... 6-6

• •Upholstery Set - Narrow................... 6-7

3 • •Hydraulic System ........................... 6-10

4 • •Headrest Assembly........................ 6-11

5 • •Seat Components .......................... 6-12

6 • •Footboard Components.................. 6-15

7 • •Base Covers And Enclosures ........ 6-16

8 • •Base Mechanical Components ....... 6-17

9 • • • • Base Slide Assembly.................... 6-18

10 • •Base Electrical Comp.-Domestic .... 6-19

• •Base Electrical Comp.-Export......... 6-20

11 • • • • Motor / Pump Assembly ............... 6-21

12 • • Foot Control Assembly ................... 6-22

(Serial Number Prefix KZ-****) ........... Ref

Always Specify Model & Serial Number

7

8

9

Item Part No. Description PageItem Part No. Description Page

Refer to MEDICAL ACCESSORY BOOK {004-0096-00}

13 • 9A43006 • Chair Arm ...................................... 9A43

14 • 9A51001 • Facial Pad ..................................... 9A51

15 • 9A60001 • Restraint Belts............................... 9A60

16 • 9A75001 • Caster Base Assy. ........................ 9A75

17 • 9A77001 • I.V. Pole ........................................ 9A77

18 • 9A81001 • Articulating Armboard .................... 9A81

19 • 9A82001 • Special Procedures Armboard ....... 9A82

20 • 9A83001 • Instrument Tray ............................ 9A83

21 • 9A157001 • Side Rail Assy. ............................ 9A157

22 • 9A179002 • Fixed Armboard .......................... 9A179

23 • 9A18400* • Base Rail / Welch Allen Brkt. @ ... 9A184 24 • 9A197001 • Swivel Wheel Caster Accessory . 9A197

25 • 9A199001 • Round Headrest .......................... 9A198

26 • 9A199001 • Special Procedures Headrest...... 9A199

27 • 9A200001 • Color Panels (Not Shown) ........ 6-4 / 6-7

28 • 9A221001 • Wrist Support Single ..................... 9A221

OPTIONAL ACCESSORIES

6

MA470800

Back Components

Return To Table Of Contents

SECTION VI

PARTS LIST

1

23

2

25

9

3

6

4

28

24

27

26

19

7

5

22

21

20

19

18

8

1 050-0472-40 Paper Cover.......................................... 1

2 045-0001-12 Curved Washer ..................................... 2

3 042-0010-03 Pop Rivet .............................................. 2

4 030-0912-40 Back Weldment ..................................... 1

5 042-0010-11 Pop Rivet .............................................. 4

6 002-0146-00 Paper Tear Strip Set (24") ..................... 1

7 016-0022-00 Stud ...................................................... 2

8 Upholstered Back Section (Refer to

"Upholstery Set" Elsewhere) ................ 1

9 040-0250-88 Screw ................................................... 6

10 045-0001-31 Lockwasher .......................................... 1

11 015-0082-02 Grounding Braid ................................... 1

12 040-0010-04 Screw ................................................... 1

13 040-0250-10 Screw ................................................... 1

14 045-0001-05 Lockwasher .......................................... 1

15 040-0375-15 Screw ................................................... 4

Always Specify Model & Serial Number

15

11

17

10

14

9

12

Item Part No. Description Qty.Item Part No. Description Qty.

16 042-0001-02 Roll Pin .................................................. 2

17 057-0057-42 Side Rail Mount ..................................... 4

18 051-0112-00 Side Rail ................................................ 2

19 042-0007-00 E-Ring ................................................... 4

20 042-0006-01 Clevis Pin .............................................. 1

21 Back Cylinder (Refer to "Hydraulic

System" Elsewhere) .............................. 1

22 042-0006-00 Clevis Pin .............................................. 1

23 016-0542-00 Slide Latch Assembly ............................ 2

24 One Arm Headlock Assembly (Refer to

"Headrest Assembly" Elsewhere).......... 1

25 061-0117-00 Standards Label .................................... 1

26 050-0872-40 Back Cover ........................................... 1

27 040-0006-06 Screw ................................................... 4

28 Serial Number ........................................ 1

13

16

MA470900

Upholstery Set - Thermo

Return To Table Of Contents

1

2

3

SECTION VI

PARTS LIST

18

12

13

14

5

4

6

7

8

9

002-0557-***-*** Upholstery Set-Thermo (Includes

1 • 028-0458-XX • Headrest {Specify Color}..................... 1

2 • 058-0001-03 • Bag Clip .............................................. 2

3 • 040-0006-27 • Screw ................................................. 2

4 • 040-0010-13 • Screw (Apply Loctite #042-0024-02) ... 3

5 • 053-0582-01 • Headboard Pillow Mount ...................... 1

6 • 042-0137-00 • Upholstery Latch Stud ....................... 12

7 • 040-0010-104 • Screw ................................................. 9

8 • 053-0105-26 • Velcro Tape ........................................ 1

9 • 042-0120-00 • Upholstery Mount Stud

10 • 050-3102-40 • Seat Cover.......................................... 2

11 • 040-0006-00 • Screw ............................................... 10

12 • 028-0471-XX • Back/Seat Section {Specify Color}...... 1

13 • 016-0022-00 • Stud .................................................... 4

14 • 002-0146-00 • Paper Tear Strip Set............................ 1

15 • 028-0461-XX • Legrest-Styled {Specify Color} ............ 1

16 • 057-0379-00 • Spacer ................................................ 2

17 • 028-0457-XX • Footrest-Styled {Specify Color} ............ 1

18 • 9A2000XX • Panel Insert Set {Specify Color} ....... AR

Items 1 thru 18) {Specify Color}............. 1

(Apply Loctite #042-0024-02) .............. 3

Always Specify Model & Serial Number

6

7

10

Item Part No. Description Qty.Item Part No. Description Qty.

15

17

16

6

11

7

MA403500

The following are the current stock

upholstery colors for upholstery kits.

Part No. Upholstery Color Qty.

***- ****-103-*** Slate Grey ................................... AR

***- ****-095-*** Sand Grey ................................... AR

***- ****-096-*** Iris Blue........................................ AR

***- ****-100-*** Nile Green ................................... AR

***- ****-101-*** Royal Lavander ........................... AR

***- ****-102-*** Terra Rosa .................................. AR

The following are current stock panel

colors for upholstery kits.

Part No. Panel Color Qty.

***- ****-***-014 Slate Grey ........................................ AR

***- ****-***-031 Sand Grey ....................................... AR

***- ****-***-033 Nile Green ......................................... AR

***-**** -***-034 Royal Lavander ................................. AR

***- ****-***-035 Terra Rosa ....................................... AR

***- ****-***-036 Iris Blue ............................................. AR

Upholstery Set - Narrow

Return To Table Of Contents

19

SECTION VI

PARTS LIST

18

1

7

8

6

2

7

9

3

4

002-0559-***-*** Upholstery Set-Narrow Width (Incl. Items

1 • 053-0628-01 • Headrest Cover .................................. 1

2 • 040-0006-20 • Screw ................................................. 6

3 • 058-0001-03 • Bag Clip .............................................. 2

4 • 040-0006-00 • Screw ................................................. 2

5 • 040-0010-78 • Screw (Apply Loctite # 042-0024-00) .. 3

6 • 053-0582-01 • Headboard Pillow Mount ...................... 1

7 • 042-0137-00 • Upholstery Latch Stud ....................... 12

8 • 040-0010-104 • Screw ................................................. 9

9 • 042-0120-00 • Upholstery Mount Stud (Apply

10 • 050-3103-40 • Seat Cover - R.H. (Shown) ................. 1

• 050-3103-41 • Seat Cover - L.H. ................................ 1

11 • 040-0006-00 • Screw ............................................... 10

12 • 057-0379-00 • Spacer ................................................ 2

13 • 028-0389-XX • Footrest {Specify Color} ....................... 1

14 • 028-0123-XX • Legrest {Specify Color} ....................... 1

15 • 029-0017-02 • Paper Tear Strip Set (24") ................... 1

16 • 016-0022-00 • Stud .................................................... 4

17 • 028-0391-XX • Seat Section-Narrow {Specify Color} .. 1 18 • 028-0390-XX • Back Section-Narrow {Specify Color} .. 1

19 • 028-0395-XX • Headrest {Specify Color}..................... 1

20 • 9A2000XX • Panel Insert Set {Specify Color} .......... 1

5

10

1 thru 20) {Specific Color}..................... 1

Loctite # 042-0024-00) ........................ 3

Always Specify Model & Serial Number

20

17

16

15

7

8

12

7

11

8

Item Part No. Description Qty.Item Part No. Description Qty.

The following are the current stock upholstery colors for upholstery kits.

Part No. Upholstery Color Qty.

***- ****-059-*** Slate Grey ................................... AR

***- ****-090-*** Sand Grey ................................... AR

***- ****-091-*** Iris Blue........................................ AR

***- ****-092-*** Nile Green ................................... AR

***- ****-093-*** Royal Lavander ........................... AR

***- ****-094-*** Terra Rosa .................................. AR

The following are current stock panel colors for upholstery kits.

Part No. Panel Color Qty.

***- ****-***-014 Slate Grey........................................ AR

***- ****-***-031 Sand Grey ....................................... AR

***- ****-***-033 Nile Green......................................... AR

***-**** -***-034 Royal Lavander................................. AR

***- ****-***-035 Terra Rosa ....................................... AR

***- ****-***-036 Iris Blue............................................. AR

14

13

MA246800

Hydraulic System

Return To Table Of Contents

SECTION VI

PARTS LIST

24

21

23

TYPICAL ON

ALL CYLINDERS

22

20

19

17

16

18

14

15

12

13

11

5

1

4

8

10

6

7

1 002-0444-00 Motor / Pump Components (See

Breakdown Elsewhere) ..................... Ref

2 002-0001-00 Base Cylinder Kit.................................. 1

3 014-0135-00 Base Tee.............................................. 1

4 014-0098-00 Union Tee............................................. 1

5 002-0120-00 Hose Assembly Kit............................... 1

6 002-0117-00 Hose Assembly Kit............................... 1

7 002-0119-00 Hose Assembly Kit............................... 1

8 002-0122-00 Hose Assembly Kit............................... 1

9 002-0121-00 Hose Assembly Kit............................... 1

10 014-0136-00 Tilt Power Manifold............................... 1

11 002-0123-00 Hose Assembly Kit ............................... 1

12 061-0113-00 Safety Cable Label............................... 1

13 016-0161-00 Safety Cable......................................... 1

14 014-0137-00 Return Manifold.................................... 1

Always Specify Model & Serial Number

9

2

3

Item Part No. Description Qty.Item Part No. Description Qty.

15 002-0125-00 Hose Assembly Kit ............................... 1

16 002-0126-00 Hose Assembly Kit ............................... 1

17 002-0002-00 Tilt Cylinder Kit ..................................... 1

18 002-0124-00 Hose Assembly Kit ............................... 1

19 002-0003-00 Foot Cylinder Kit................................... 1

20 002-0346-00 Back Cylinder KIt.................................. 1

21 025-0032-00 Rod Wiper Bracket ............................ AR

22 054-0109-00 Felt Wiper (1") ................................... AR

23 054-0108-00 Felt Wiper (11/16") ............................ AR

24 053-0226-03 Snap-in Nyliner Bearing .................... AR

25 015-0013-00 Cable Tie (Not Shown)......................... 6

26 015-0013-02 Cable Tie (Not Shown)......................... 4

27 015-0016-00 Cable Tie (Not Shown)......................... 9

28 015-0017-00 Cable Tie (Not Shown)......................... 1

MA241500

Headrest Assembly

Return To Table Of Contents

SECTION VI PARTS LIST

18

16

17

6

1

5

2

7

14

13

15

12

3

4

9

10

11

Used on units with Serial Number KZ1000 thru KZ1023

1 Upholstered Headrest {Specify Color}

(Refer to "Upholstery Set" Elsewhere) . 1

2 053-0581-01 Headboard Pivot Mount ......................... 1

3 040-0250-26 Set Screw (Apply Loctite

Loctite #042-0024-00) .......................... 1

4 057-0375-00 Headboard Pivot Pin ............................ 1

5 040-0250-79 Screw ................................................... 1

6 016-0542-01 Slide Latch ............................................ 3

7 • 040-0250-88 • Screw (Apply Loctite #042-0025-00) ... 4 8 • 029-1487-01 • One Arm Headlock Assembly

(Includes Items 9 thru 18) ................... 1

8

MA471100

Item Part No. Description Qty.Item Part No. Description Qty.

9 • • 051-0080-00 • • Draw Bar .......................................... 1

10 • • 040-0250-70 • • Set Screw ......................................... 1

11 • • 042-0002-08 • • Roll Pin .............................................. 1

12 • • 041-0250-12 • • Jam Nut ............................................ 2

13 • • 030-0123-42 • • Head Pivot Handle Weldment ............ 1

14 • • 042-0002-04 • • Roll Pin .............................................. 2

15 • • 057-0048-00 • • Pivot Bar ........................................... 1

16 • • 030-0141-44 • • Headlock Weldment .......................... 1

17 • • 040-0010-14 • • Set Screw ......................................... 1

18 • • 040-0250-11 • • Screw ............................................... 1

Always Specify Model & Serial Number

Headrest Assembly

Return To Table Of Contents

SECTION VI PARTS LIST

18

16

17

6

1

5

2

7

14

13

15

12

3

4

9

10

11

Used on units with Serial Number KZ1023 thru Present

1 Upholstered Headrest {Specify Color}

(Refer to "Upholstery Set" Elsewhere)... 1

2 053-1047-01 Headboard Pivot Mount ......................... 1

3 040-0008-35 Screw (Apply Loctite

Loctite #042-0024-00) ........................... 1

4 057-0528-00 Headboard Pivot Pin.............................. 1

5 040-0250-79 Screw ................................................... 1

6 016-0542-01 Slide Latch ............................................ 3

7 • 040-0250-88 • Screw (Apply Loctite #042-0025-00) ... 4 8 • 029-1487-01 • One Arm Headlock Assembly

(Includes Items 9 thru 18) ................... 1

8

MA471101