Invacare Ben 9 Plus, Maintenance & Spare Parts Manual

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MAINTENANCE
Page 2.13
04/02
2.3 Removing And Replacing Rear Wheel Assemblies
General
1 The Ben 9 range of wheelchairs can be fitted with the following wheel types:
(a) 12 1/2 inch solid Transit style
(b) 12 1/2 inch pneumatic Transit style
2 Check the wheel assembly for any defects (refer to paragraph 5). If any defects are observed then refer
to paragraphs 6 to 11 for maintenance details and to Chapter 3 for parts.
3 The rear wheel assembly can be renewed as either:
3.1 A complete assembly.
3.2 Replacement tyre and inner tube (if pneumatic).
Tools
4 Refer to the tool list at the beginning of this Chapter.
4.1 A torque wrench of 25 lbf.ft rating is required.
Inspection
5 Inspect on a weekly basis for the following:
5.1 Damage to either wheel or tyre.
5.2 When the wheel assembly is allowed to free wheel that no binding, grating noise or unconcentric
rotation are present.
5.3 Wheel rim and spokes are undamaged.
Removing A Transit Wheel Assembly
6 To remove a transit wheel (1) (refer to Fig 2.3) proceed as follows:
6.1 Raise and support the chair so the damaged wheel is free of the ground.
6.2 Using a suitable size spanner grip the nut located behind the wheel hub.
6.3 Using the torque wrench, unscrew and remove the locknut.
6.4 Slide the wheel free from its location on the frame.