Otto Bock 490E75 Series, Service Manual

Page: 68 / 164

Service work
490E75=0_C 68 | Ottobock
4.10.7.2 Replacing the stabilising wheel swing arm suspension
NOTICE
Incorrect dimensioning of the suspensions
Damage to the suspensions and the product
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Only replace the suspensions with approved suspensions of the same type (see Page 72).
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Prerequisites:
Optional: Move the seat to the lowest seat height (see <<<Page 15).
Switch off the control device and deactivate the main fuse (see Page 15).
If necessary: remove the leg supports.
Jack up the wheelchair (see Page 14).
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Tools: 2x Allen wrench size 5; Allen wrench size 6; torque wrench with Allen insert size 5, 6
Removing the stabilising wheel swing arm suspension
1) For mobility base size 1: Remove the drive wheel (see Page 45).
2) For mobility base size 1: Remove the drive wheel splash guard (see Fig. 139, item 1; see Page 51).
3) Loosen and remove the screw between the suspension and drive unit bracket with 1 washer (see Fig. 139,
item 2).
4) Lower the stabilising wheel swing arm and remove 1 spacer sleeve from the drive unit bracket (see Fig. 139,
item 3).
5) Loosen and remove the screw with sleeve nut between the stabilising wheel swing arm and suspension (see
Fig. 139, item 4).
6) Remove the suspension.
Installing the stabilising wheel swing arm suspension
1) IN@MOOC@N>M@RRDOCNG@@Q@IPO=@OR@@IOC@NO<=DGDNDIBRC@@GNRDIB<MH<I?NPNK@INDJI<I?uMHGTODBCO@IDOOJ
15 Nm (see Fig. 139, item 4).
2) Insert the spacer sleeve into the drive unit bracket (see Fig. 139, item 3) and swivel the stabilising wheel swing
arm upwards until the bearing eye of the suspension comes to rest against the spacer sleeve.
3) IN@MOOC@N>M@R=@OR@@IOC@NPNK@INDJI<I??MDQ@PIDO=M<>F@ORDOC¾R<NC@M<I?uMHGTODBCO@IDOOJ25 Nm (see
Fig. 139, item 2).
4) Attach the drive wheel splash guard (see Page 51).
5) Attach the drive wheel (see Page 45).
6) Adjust the suspension of the stabilising wheel swing arms equally on both sides (see Page 72).
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