Invacare Ben 9 Plus Guide

Invacare Ben 9 Plus
Maintenance & Spare Parts Manual
R

Ben 9 Plus
Page 2 04/02
Contents Page
Chapter 1 Introduction
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.3
Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5
Technical Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5
Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5
Chapter 2 Maintenance
Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.3
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.4
Removing And Replacing Backrest Canvas . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.7
Removing And Replacing An Armrest Assembly . . . . . . . . . . . . . . . . . . . . . . . . .2.9
Removing And Replacing Main Wheel Assemblies . . . . . . . . . . . . . . . . . . . . . .2.11
Removing And Replacing A Brake Assembly . . . . . . . . . . . . . . . . . . . . . . . . . .2.13
Removing And Replacing A Castor Wheel Assembly . . . . . . . . . . . . . . . . . . . .2.15
Removing And Replacing An Adjustable Footrest Assembly . . . . . . . . . . . . . . .2.17
Removing And Replacing Seat Canvas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.19
Chapter 3 Illustrated Parts List
Backrest Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.7
Armrest Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.9
Rear Wheel Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.11
Brake Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.13
Castor Wheel Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.15
Swinging Detachable Footrest Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.17
Seat Canvas Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.19

INTRODUCTION
Page 3
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Chapter 1
Introduction

Ben 9 Plus
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Figure 1.0 Ben 9 Plus Wheelchair

INTRODUCTION
Page 5
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Introduction
1 This manual provides basic details to enable the BEN 9 Plus range of wheelchairs to be maintained. It is
not intended to be a comprehensive maintenance guide/policy, but is intended for use by competent
personnel to enable the chair to be adequately maintained.
2 The manual is split into the following chapters:
Chapter 2 Detailing assemblies that are maintainable and the relevant procedures.
Chapter 3 Detailing parts that are available to enable the maintenance in Chapter 2 to be complied
with.
3 The BEN 9 range of wheelchair is manufactured by:
INVACARE Ltd
South Road
Bridgend Industrial Estate
Bridgend
Mid-Glamorgan
CF31 3PY
4 For Customer Service enquires, repairs, servicing and spares, contact INVACARE Ltd at the address
below and quote all the details as indicated in paragraphs 6 and 7.
5 INVACARE Ltd
South Road
Bridgend Industrial Estate
Bridgend
Mid-Glamorgan
CF31 3PY
Tel No: 01656 647327
Fax No: 01656 649016
6 Quote the following details at all times:
6.1 Part Number
6.2 Description
6.3 Quantity required
7 For certain orders the following should also be quoted:
7.1 Serial or batch number
7.2 End user

Ben 9 Plus
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Figure 1.0 Ben 9 Plus Wheelchair

INTRODUCTION
Page 7
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Policy
8 INVACARE Ltd. repair policy is as follows:
Repairs to ANY component other than those detailed in Chapter 2 are not covered. Repairs to ANY metal
work is not generally permitted without express permission of INVACARE Ltd. ALL fasteners i.e. bolts,
Nyloc nuts, and any fastener showing damage MUST be renewed.
Failure to comply with the above absolves INVACARE Ltd of liability.
!Note: Certain components will require removal to carry out maintenance. With the exception of fas-
teners, these components should be refitted.
Technical Details
9 The following data applies to the Ben 9 range of wheelchairs.
9.1 Available seat sizes:
15 inches by 16 inches, 17 inches by 17 inches and 18 inches by 17 inches and 16 inches by
16 inches.
9.2 Seat to ground height:
19 inches.
9.3 Wheel types available:
12 1/2 inches transit with pneumatic or solid tyre. Located to frame.
9.4 Maximum user weight:
20 stones (127kgs)
9.5 Backrest type:
Folding backrest.
9.6 Chair finish:
Powder coat in red or black.
9.7 Transit weight of chair:
29lbs (13.2kgs).
Types
Options
10 The chair is available in various user defined optional types. For further details refer to INVACARE Ltd for
details and acceptable combinations.

Ben 9 Plus
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LEFT BLANK INTENTIONALLY

MAINTENANCE
Page 2.1
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Chapter 2
Maintenance

Ben 9 Plus
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Figure 2.0.1 General Arrangement of Ben 9 Plus
1 Backrest canvas 5 Castor assembly
2 Armrest assembly 6 Footplate assembly
3 Rear wheels 7 Swinging bracket assembly
4 Brake assembly 8 Seat canvas

MAINTENANCE
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Scope
1 This chapter details the removal and/or replacement procedures required for the following assemblies
and/or items. It is not intended to be a strict policy of maintenance but should be used as a guide only.
2 The assemblies covered (refer to Fig 2.0.1) are as follows:
Section Assembly Page
2.1 Backrest 2.6
2.2 Armrest 2.8
2.3 Rear wheels (12 1/2 inches) 2.10
2.4 Brake assembly 2.14
2.5 Removing and replacing a castor assembly 2.16
2.6 Adjustable footrest 2.18
2.7 Seat canvas 2.20
3 For the tools required refer to the list of tools detailed in paragraph 12. Any special tooling and/or torque
requirements will be referred to within the relevant text.
4 General engineering practices and safe working practices must be adhered to at all times.
5 For further information on the assemblies contained within this chapter, contact Customer Services,
INVACARE Ltd., (refer to address in chapter 1) quoting the following details:
5.1 Part Number
5.2 Description
5.3 Quantity required
6 For certain orders the following should also be quoted:
6.1 Serial or batch number
6.2 End user
7 For any ordering or spares procurement, contact INVACARE Ltd., (refer to address in Chapter 1) quoting
the details in paragraphs 5 and 6.
Inspection
8 In general, a weekly visual check will meet all the inspection requirements.
9 Ensure that the following are checked:
9.1 Fabric is undamaged and has no signs of sagging.
9.2 The footrest is correctly fitted.
9.3 Both armrests are securely fitted in place.
9.4 Brake mechanism operates freely and when locked, the chair does not move.
9.5 Footplates are undamaged and are correctly fitted.
9.6 Tyres are in good order and the wheels are not damaged.
9.7 If stabilisers are fitted, they are firmly locked in place.

Ben 9 Plus
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Figure 2.0.1 General Arrangement of Ben 9 Plus
1 Backrest canvas 5 Castor assembly
2 Armrest assembly 6 Footplate assembly
3 Rear wheels 7 Swinging bracket assembly
4 Brake assembly 8 Seat canvas

MAINTENANCE
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10 Check the finish of the chair for any damage.
!Note: Some finishes are unique to the chair. Check with INVACARE Ltd for details.
11 Check that all bungs and handgrips are fitted and undamaged.
12 Before reassembly of any components, the following examination should be carried out:
12.1 All brazed joints should be examined and any damaged component should be replaced.
12.2 All plated parts should be checked to ensure that surfaces are free from wear, damage or oxidation.
12.3 All Nyloc nuts should be replaced after removal.
Tools
13 The following list details the basic tools required to carry out the maintenance given in the following sub-
chapters.
13.1 Pliers
13.2 Socket set (Metric and Imperial)
13.3 Spanners (Metric and Imperial)
13.4 Pozidriv screwdriver
13.5 Slotted screwdriver
13.6 Adjustable spanner
13.7 Torque wrench (20 to 40 lbf.ft rating)
13.8 Set of Allen keys (Metric and Imperial)
13.9 Protected jaw grips
13.10 Nylon mallet
13.11 Pop rivet gun
13.12 Nut insert application tool
13.13 Rule
!Note: The above list is not exhaustive.

Ben 9 Plus
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Figure 2.1 Folding Backrest Assembly
1 Backrest canvas 5 Pivot bolt
2 Hand grips 6 Plunger
3 Push handles 7 Countersunk screw
4 Plunger knob 8 Cup washer

MAINTENANCE
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2.1 Removing And Replacing The Backrest Canvas
General
1 Check the backrest canvas (1) and push handles (3) for any defects, (refer to paragraphs 4 and 5). If any
defects are observed then refer to paragraphs 6 to 7 for maintenance details and to Chapter 3 for parts
information.
2 Ensure that the push handle locks securely into place and that the locking mechanism functions correctly.
Tools
3 Refer to the tool list at the beginning of this Chapter.
Inspection
4 Inspect on a weekly basis for the following:
4.1 No signs of sagging, stretching or excessive wear in the canvas (1).
4.2 No evidence of fraying, especially around the fastener points.
4.3 Pozidriv head screws (5) not missing..
4.4 Cup washers not missing.
5 Inspect the locking mechanism for the following:
5.1 Release levers are not deformed or damaged.
5.2 Locks safely when the push handle (3) is in the upright position.
5.3 Not excessively stiff to operate (action should be smooth and positive).
Removal of the backrest canvas
6 To remove or replace the backrest canvas (1) proceed as follows:
6.1 Unscrew and remove the six pozidriv head countersunk screws (7) and cup washers (8).
6.2 Unscrew and remove the two button head pivot bolts (5), Nyloc nuts and washers.
6.3 Hold the push handle (3), and slide the lower half of the backrest canvas (1) off.
6.4 Remove plunger (4) and plunger knob (6).
6.5 Hold the backrest canvas and slide the push handle out.
Replacing the backrest canvas
7 To replace the backrest canvas is the reverse of the removal, however ensure the following:
7.1 New Nyloc nuts are fitted.
7.2 The securing points are undamaged.
7.3 New washers are fitted as required.
7.4 That the backrest canvas is stretched evenly and is taut.

Ben 9 Plus
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Figure 2.1.1 Backrest Extension Assembly
1Backrest canvas 6Plunger
2Hand grips 7Countersunk screw
3Push handles 8Cup washer
4Plunger knob 9Backrest extension
5Pivot bolt 10 Locating ring kit

MAINTENANCE
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2.1.1 Removing And Replacing A Backrest Extension
General
1 Check backrest extension for any defects (refer to paragraph 3). If any defects are observed then refer to
paragraphs 4 to 6 for maintenance details and to Spares Catalogue for parts information.
Tools
2 Refer to the tool list at the beginning of this Chapter.
Inspection
3 Check for the following:
3.1 Damage to backrest extension canvas.
3.2 Screws (7), washer (8) and locating ring (10) missing and/or damaged.
3.3 Backrest extension is correctly fitted.
Removing Backrest Extension
4 To remove backrest extension proceed as follows:
4.1 Lift the backrest extension upwards and then sidewards off the locating rings (10).
Replacing The Backrest Extension
5 Replacing the backrest extension is the reverse of the removal.
Fitting a Backrest Extension for the first time
6 Fitting a Backrest Extension for the first time, proceed as follows:
6.1 Remove taptite screw (7) and washer (8) from top of push handle.
6.2 Fit four locating rings (10) with taptite screws (7) to side of push handles (3).
6.3 Slide the backrest extension firmly onto the locating rings (10).

Ben 9 Plus
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Figure 2.2 Armrest Assembly
1 Sealing plug 4 Pozidriv head screw
2 Armrest pad 5 Armrest panel
3 Armrest frame
Figure 2.2 (a)

MAINTENANCE
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2.2 Removing And Replacing An Armrest Assembly
General
!Note: The armrest assembly comprises the following:
The armrest pad (2), panel (5) and frame (3).
1 Check the armrest pad (2) and frame (3) for any defects (refer to paragraph 4). If any defects are observed
then refer to paragraphs 5 to 7 for maintenance details and to Chapter 3 for parts information.
2 The armrest can be renewed as either:
2.1 A complete assembly.
2.2 Armpad kit (KIT 1).
Tools
3 Refer to the tool list at the beginning of this Chapter.
Inspection
4 Inspect on a weekly basis for the following:
4.1 Frame (3), panel (5) and finish are undamaged.
4.2 Armrest pad (2) is undamaged and securely fastened in place.
Repairing An Armrest Assembly
!Note: For ease of maintenance the armrest assembly can be replaced as a complete assembly. For removal
refer to Figure 2.2 (a).
5 To repair the armrest assembly remove it from the wheelchair by turning the release lever and proceed as
follows:
5.1 Support the frame (3) using a soft jawed vice.
6 Removing the armrest pad (2).
6.1 Unscrew and remove the two pozidriv screws (4).
6.2 Remove the armrest pad from the frame.
7 Removing a panel (5).
7.1 The armrest panel (5) of the armrest is a snap fit onto the armrest frame and can be removed by
holding the armrest frame (3) firmly whilst pushing the panel forwards.
Replacing Armrest Components
8 To replace any of the components of the armrest is the reverse of the removal; however ensure the
following:
8.1 The panel (5) is flush fitting to the frame (3).
8.2 Sealing plug (1) are undamaged when replaced.

Ben 9 Plus
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1 Wheel assembly
Figure 2.3 Rear Wheel Assembly - Transit