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Rehab motion, Technical Information

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HD Motion

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Technical Information

2.6 Replacement of gas spring for seat tilt

1.  Remove cushions, leg rests, and seat plate.
2.  Remove the cable from the holder as follows (see Figure 3):

Fully loosen the nut (4). Take the wire housing (5) out of the bracket (12) by pulling the end of the 

housing sideways to bring the wire out. Remove the wire nipple (1) from the pin (2). Take care not 

to lose the spring (3). 

3.  Remove the gas spring from the seat frame by removing a circlip (19) and then pulling or knocking 

out the pin (11). Be careful when removing the circlip. If it is opened too far it will be damaged and 

must be discarded.

NOTE

: When the pin is removed the seat unit can fall forward with risk for personal injury and 

damage to the wheelchair. Ensure the seat unit is properly supported. 

Tip

: Fold the back frame 

forward so that all weight is forward and easier to control.

4.  Remove the holder from the wheel frame by taking out the pin (14) in the same manner.
5.  Remove the gas spring from the holder as follows:

Loosen the nut (6) a few turns. Remove the nut (7) and take out the bolt (17) and spacers (8 and 

16). Push the gas spring out of the holder far enough to free the end plug (19). Push the sleeve (18) 

out of the end plug, which can then be removed. Pull the gas spring out of the holder.

6.  Loosen the nut (13) a little so that the gas spring can be threaded out of the rod (9). Hold all of the 

end pieces together so they do not fall apart. Thread the new gas spring into the rod. Check that 

all pieces are in place and that the nut (13) is fully threaded on to the gas spring shaft.

7.  Adjust the gas spring position in the rod (9) so that the pin (2) is parallel with the bracket (12) 

when the spring is pressed (

lightly

) against the release pin of the gas spring. See Figure 3.1.

8.  Tighten the nut (13) but not excessively.
9.  Reassemble the gas spring in the holder and the holder to the wheelchair in the reverse order of 

steps 2-5 above. Do not forget the spring (3).

10.  Reassemble the seat plate and check function. The cable for the seat tilt may need adjustment. 

Some adjustment for proper release of the gas spring can even be done by moving the gas spring 

slightly in the rod.
See also section 3.3 Cable controls for more info.

11.  Adjust the seat zero position per section 2.5.

Summary of Contents for motion

Page 1: ...Technical Information English ...

Page 2: ...ccept no compromises in quality Precision safety for user and caregiver function and design are our guiding principles We are confident that you will feel the difference compared to any other wheelchair GLAD TO BE FLEXIBLE Whether you are a user a family member or a caregiver we welcome your requests and opinions Our designers and developers work closely with the production team at our facility on...

Page 3: ...cement of castor fork 15 2 16 2 Replacement of castor 15 3 Construction of Various Components 16 3 1 Disc brake system 16 3 1 1 Adjustment of disc brakes 16 3 1 2 Replacement of brake cable 17 3 1 3 Replacement of brake pad and disc 17 3 2 User brakes 18 3 2 1 Adjustment 18 3 2 2 Replacement and repair 18 3 2 3 Replacement of brake cable 19 3 3 Cable controls 20 3 3 1 Cable routing 20 3 3 2 Replac...

Page 4: ...heelchair is approved for use as a seat during transportation in vehicles HD Motion is a Class 1 Medical Device CE marked per EU 217 745 MDR 1 1 Important documents It is useful to have the following documents at hand when working with HD Motion 95431 1 Information about custom made products Information regarding regulations that apply for adaptations and modifications of medical products 96711 1 ...

Page 5: ...l characteristics see section 2 1 The chassis is complemented with different configuration accessories such as different backrest systems leg rest options armrests and push bar In addition the wheelchair can be equipped with a range of different accessories such as headrest tray table trunk support and more Chassis components are named per Figure 1 1 Wheel frame 6 Drive wheel 11 Controls 2 Seat fr...

Page 6: ...rements and testing against relevant standards Changes to the configuration of the wheelchair come with both positive and negative consequences Therefore the standard configuration should be used wherever possible The following modifications can be made Seat frame length to achieve different seating depths The type of wheelchair chosen when ordering determines the length it cannot be modified late...

Page 7: ... the seat frame with screws on both sides 2 in Figure 2 Each connection consists of a bushing 2 washers a screw and a lock nut Note the bushings for the back connection 2 and the seat connection 3 are not the same The gas spring for back recline is attached to seat frame via a pin joint 4 in Figure 2 The connection consists of a pin and 2 circlips The gas spring attaches to the bottom of the back ...

Page 8: ...done as follows 1 Set the seat tilt all the way forward which is to say the gas spring fully in see Figure 3 2 Loosen the nut 6 a few turns so that the gas spring is not held fast in the holder 15 3 Loosen the nut 7 a few turns so that the gas spring can move in the holder 4 Adjust the seat to the desired position Depending on the wheels and tires it can be adjusted between approximately 5 and 3 5...

Page 9: ...turns Remove the nut 7 and take out the bolt 17 and spacers 8 and 16 Push the gas spring out of the holder far enough to free the end plug 19 Push the sleeve 18 out of the end plug which can then be removed Pull the gas spring out of the holder 6 Loosen the nut 13 a little so that the gas spring can be threaded out of the rod 9 Hold all of the end pieces together so they do not fall apart Thread t...

Page 10: ...eaded on to the gas spring shaft 5 Adjust the gas spring position in the rod 7 so that the pin 2 is parallel with the bracket 10 when the spring is pressed lightly against the release pin of the gas spring See Figure 4 1 6 Tighten the nut 13 but not excessively Turn the gas spring to the correct angle and attach it to the back frame with the pin 6 Check that the pin snaps into place correctly 7 Ch...

Page 11: ...ut Figure 5 The control lever for back recline then has no function This can be handled in 2 ways 1 The lever can remain in place The cable should then be bound up and pinned in place under the wheelchair It may be confusing for users to have a lever with no function 2 The lever and cable can be removed from the cable control The hole that is left in the cable control should then be covered with a...

Page 12: ... HD Motion 16 The adapter plates are mounted between the joint plates of the seat frame and the side plates of the wheel frame with screw connections Figure 8 The holder for the gas spring is replaced with a different version Figure 9 The kit can be assembled on a wheelchair by following mounting instructions but it is advantageous to assemble the kit directly on a newly ordered wheelchair The rai...

Page 13: ...cessed through the large hole in the brake disc Be careful when doing this assembly that the brake disc is not damaged See Figure 11 NOTE The cross bar must always be in place NOTE When the wheel mount is moved the fenders also need to move See section 2 15 NOTE Thread locker Loctite 2400 or equivalent must be used on the screws A Wheel mount 25 mm forward B Wheel mount mid position C Wheel mount ...

Page 14: ...or HD Motion 22 and HD Motion 16 If the entire tip protector is to be replaced remove the screw 8 from the underside of the wheel frame NOTE When assembling a new tip protector the spring washer 7 must be oriented correctly with the convex side facing upward NOTE The tip protectors have left hand and right hand versions If HD Motion 22 is equipped with a different wheel size than the standard 22 t...

Page 15: ...y do not forget the washer on each side The castor fork has 5 holes to mount the castor Which hole should be used is specified in Table 2 The position is determined by the size of the castors and the size of the drive wheels Standard castors are 150 mm in diameter Note that other sizes of castor can affect the driving characteristics of the wheelchair and that some sizes may come in to conflict wi...

Page 16: ...or user brakes N and O in Figure 16 on the right and left side respectively Adjustment screws for caregiver brakes C and D in Figure 19 Note The adjustment screw for the caregiver brake on the right side is found on the left side of the back frame and vice versa 2 Loosen the nut 2 in Figure 16 on all adjustment screws and thread in the sleeves 1 a few turns to slacken the brakes 3 Check that all c...

Page 17: ...p so that the wire can be placed in the wire guide screw in the end sleeve 2 fully 8 Follow the instructions in section 3 1 1 steps 4 and 5 for adjustment of braking force 9 Check the brake function and that all cables are correctly clipped in place on the back frame see Figure 16 Also check that the push bar can be adjusted through the full range without affecting the brake cables 3 1 3 Replaceme...

Page 18: ...fter adjusting NOTE The brakes must always be adjusted such that the braking force is correct with the caregiver brakes in the parking position Verify this is the case NOTE Caregiver brakes must always be adjusted before user brakes 3 2 2 Replacement and repair If the brake lever needs to be replaced both the lever and the brake arm must be replaced as they are riveted together Remove the screws 2...

Page 19: ...deways to free the wire from the guide Turn the wire such that the nipple 6 can be removed from the actuating plate 3 5 Reassemble in the same manner Check first that the adjustment screw 1 in Figure 16 on the new cable is fully screwed in for maximum slack this makes assembly easier 6 Fit the nipple 6 in Figure 15 into the actuating plate 3 Then screw in the end sleeve 5 7 Fit the nipple 5 in Fig...

Page 20: ...ine Each cable control consists of an outer half with the brake handle and an inner half with the control lever The two halves clamp together in place on the push bar 3 3 1 Cable routing Figure 19 shows the routing of all wire cables on HD Motion From the cable controls on the push bar cables connect for caregiver brakes back recline and seat tilt Figure 19 Cable routing Figure 18 Cable controls A...

Page 21: ...d together with a wire strap E in an even bow A smaller cable strap P holds the brake cables together under the seat 3 3 2 Replacement of control Replacement of cable control complete with cables 1 Remove the screws Figure 20 to release the cable control from the push bar 2 Remove the clips that hold the control cable to the back frame see section 3 1 1 3 Release the control cable from the gas spr...

Page 22: ...e section 2 6 step 2 or back recline see section 2 8 step 3 3 Remove the cable clips see section 3 3 1 The control lever and cable are assembled in the inner half of the control see Figure 23 LH side shown 4 Loosen the screw 1 in Figure 2 a few turns Push the screw down gently This loosens the arm 3 from the lever Fully remove the screw 5 Take the arm out of the lever The wire can then be removed ...

Page 23: ...move the screws from the angle joint 1 in Figure 25 on both sides pull the push bar out 3 Assemble the new push bar and put the controls back in place in the same manner 4 Check that all cables are routed and clipped in place correctly see section 3 3 1 5 Test the braking function and adjust cables as necessary per section 3 1 1 Also check seat tilt and back recline function and angle adjustment o...

Page 24: ... is used between the back frame and the backrest brackets See page 0 1 in the Spare Parts list for details When assembling a Flexi back start by releasing all of the straps Tightened straps can affect the width of the Flexi back such that it does not match exactly with the back frame and thus assembly is made more difficult 3 5 1 Back spacers When a shorter seat depth is needed HD Motion can be eq...

Page 25: ... replaced if damaged NOTE If the button is replaced a new label must be applied For repair of internal components detailed information is required 3 6 2 Depth adjustment mechanism The mecahanism that controls the depth of the armrest pad consists of a spring loaded latch 5 in Figure 31 that locks in a number of holes 6 in the armrest profile The armrest profile is identical for all armrest models ...

Page 26: ...t width in each position cm Model Inner position Middle position Outer position HD Motion sw 30 28 30 32 HD Motion sw 34 32 34 36 Setting the seat width 1 Unscrew the two screws that secure the armrest mount Figure 33 2 Move the armrest mount to the desired position NOTE The mount is not symmetric inside the flat side faces inward 3 Set the washers in place and tighten the screws 4 Repeat the same...

Page 27: ...it easier to fit the telescoping rods into the seat frame when assembling The mount can be angled to different positions and locks in place with a spring loaded pin See Spare Parts list page D1 5 for detailed information B The separate leg rests mount is not flexible To make initial assembly to the seat frame easier follow these steps 1 Loosen the screws Figure 36 a few turns The width between the...

Page 28: ...ately Note with separate leg rests it is possible to have different leg rest tube lengths on each side Replacement of leg rest tube 1 First remove the footrest and any calf support 2 Remove the screws Figure 38 and take the tube out of the joint block 3 Place the new tube in the joint block and screw in place See Spare Parts list page D1 3 for detailed information For measurements and settings ref...

Page 29: ...th sides and a one piece calf support These are screwed in place on the underside of the foot plate The foot plate cover is easily replaced and can have slots cut in the same manner as the one piece footrest The foot plate cannot be folded up but can be adjusted slightly in angle The covers of the sides and calf support can be replaced Note Foot boxes are different models for sw30 and sw34 See Spa...

Page 30: ...on Doc nr 96720 1 Rev A 2021 07 09 Tilt control Push bar Caregiver brake Angle joint Backrest bracket Back frame Flexi back Gas spring back Armrest mount Seat frame Wheel mount Tip protector User brake Castor Gas spring seat Leg rest mount Footrest Wheel frame Cross tube Armrest Side support Headrest mount Recline control Fender ...

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