Joystick Knob And Return Spring Replacement - decon E-Drive PLUS Service Manual

4.2. Joystick Knob and Return Spring Replacement

There are specified combinations for the joystick knobs and return springs.
Select a correct combination as indicated in the combination table. If you use an
incorrect combination, the joystick knob may not return fully to the neutral posi-
tion, causing the user or those around the user to be injured.
4.2.1. Combination Table
Return spring
Operation
Type
load*2
Strong
5 Nm
SP (red)
Stan-
2 Nm
dard SP
Weak
SP 0.9 Nm
(blue)*1
Weak-
est SP 0.5 Nm
(green)*1
: Usable
× : Do not use with this combination
*1 When using the weak SP (blue) or weakest SP (green) spring, contact the wheelchair manufacturer.
*2 The operation load is the load at the set screw when the joystick is operated.
4.2.2. Joystick Knob Replacement
(1) Joystick Knob Replacement Method (a)
1
Loosen the set screw with a wrench. (See
diagram at right.)
2
Turn the joystick knob counterclockwise
and remove it.
3
Turn the joystick knob clockwise until it
stops and is securely screwed on.
4
Tighten the set screw with a wrench.
Tightening torque: 0.1 to 0.3 Nm
5
When installing the compact + urethane
cylinder type or compact + rubber bowl
type, install the compact joystick knob,
and then fit the urethane cylinder or rubber
bowl onto the knob.
WARNING
Com- Com- Com-
pact pact + pact +
type urethane rubber
cylinder bowl
type type
×
Joystick knob shape
a
Narrow Round Long
type type type
(60 mm) (135 mm)
× ×
Knob
b
T-shaped U-shaped
× × ×
× × ×
Set screw
4
37