R Healthcare Dash Series Technical Information Manual page 42

Fitting Instruction – castor assembly c/w housing
Part number
Various
Where used
Various
Tools and Techniques
The following tools will be required;
10mm open ended spanner
Service and maintenance check
At each service check for:
Damaged or broken spokes
Wheel wobble – must not rock sideways in castor fork
Stiff castor fork – castor fork and wheel must rotate 360 deg. freely
Inclusions in castor tyre – causes poor wheelchair control extra tyre wear or damage
Castor head rock – castor pintle must not move sideways when attached to castor boss type housing.
Damaged or worn, components need to be replaced, if assembled in pairs R Healthcare recommends replace both assemblies, for continuity
Removal method

Tip chair backwards so resting on push handle grips.

Loosen 2 x M6 Nyloc nuts

Pull out fastenings and release castor assembly from main frame, aside for disposal.
Fitting method

Pick up correct handed castor assembly.

Pick up 2 x M6 concentric bolts, onto the bolts 2 x 'U' bent washers, one on each bolt. Ensure head of bolt fits inside 'U' section of washer.

Assemble these bolt sub assemblies though the castor assembly from the outside in.

Pick up and assemble onto the bolts the long concaved black spacer.

Offer this sub assembly through the relevant holes in the side frame on the outside face of the chair.

Pick up and load 2 x black curvy washers

Apply Loctite 245 to bolt threads

Pick up and assemble 2 x M6 Byloc nuts. Tighten using 10mm spanner to 7NM / 10ft/lbs Torque
Checking method

Holding castor fork with both hands, move side ways – there should be no head rock seen or felt.

Holding castor fork, spin castor – this should run smoothly

Holding castor fork, check for wheel movement – these should not move from side to side along its axle.

Ensure the bolts are secure to the wheelchair frame – screw threads should protrude through the nuts on the inside of the frame.

Castor fork and wheel must rotate freely 360 deg. On the pintle in the castor housing boss.
www.rhealthcare.co.uk
Post code S41 8NJ
Weight excluding packaging: 800 grams each
R Healthcare Technical Information Manual - Dash
of wheelchair in use.
Spares and Options should only be fitted by a trained and competent person
Page 42 March 2007 Revision B