Drive Components; Overview Motor/Gearbox Unit; Replacing Motor/Gearbox Unit - Invacare TDX SP2 Series Service Manual

Replacing Tie-Down Bracket / Tilt-Module
The seat can be set to two different seat heights. Adjust
seat height at tie-down adapter according to following
table:
403 mm
lower holes
420 mm
upper holes
Fig. 6-17
1. Loosen and remove screws D.
2. Remove tie-down brackets C from A.
3. Replace defective parts.
4. Install parts in reverse order. Ensure that new tilt
module is equipped with battery protection plate B.
Installing Adapter
1. Install parts in reverse order.
2. Plug in battery plug.
3. Test all functions.

6.7 Drive Components

6.7.1 Overview Motor/Gearbox Unit

Not all motor-gearbox combinations are available for all
models. Contact your provider or check the spare parts
catalogue.
The following mounting instructions are valid for all
combinations.
Fig. 6-18 Example of a motor/gearbox unit with SSD motor
For description of old motors and components, see
earlier revision of service manual.
1532486-N

6.7.2 Replacing Motor/Gearbox Unit

CAUTION!
Risk of crushing
The wheelchair is very heavy. Risk of injury to
hands and feet.
– Use proper lifting techniques.
Risk of injury due to uncontrolled movement
of the mobility device
– Turn off power (ON-/OFF key).
– Engage drive motors.
– Secure mobility device against rolling away by
placing wedges under wheels.
CAUTION!
Risk of crushing
Motor gearbox unit is extremely heavy. Risk
of injury to hands.
– Pay attention to heavy weight.
DuraWatt motors are maintenance-free, due to
lifetime brushes.
• 6 mm Allen key
• 5/8 inch Allen key
• 7/8 inch Allen key
• 5/16 inch Allen key
• Phillips screwdriver size 2
• 13 mm socket wrench
• 1/2 inch socket wrench
• 1/4 inch socket wrench
• 5/16 inch socket wrench
• Torque wrench 5 - 25 Nm (or similar)
• Torque wrench 10 - 80 Nm (or similar)
• Two long wooden blocks, min. 14 x 14 x 30 cm
Removing Motor/Gearbox Unit
1. Remove rear battery box shroud, as described in
6.9.2 Replacing Rear Shroud (Without Operating Hour
Counter), page 41.
2. Disconnect motor plug from power module.
3. Open cable ties so you can freely access motor cable.
4. Remove drive wheel, as described in 6.8.8 Replacing
Drive Wheel (5–Screw Installation), page 38.
5. Remove wheel hub, as described in 6.8.9 Replacing
drive wheel hub, page 39.
6.
Loosen four screws (3).
7. Remove screws.
8. Remove motor/gearbox unit (1) from walking beam
(2).
Fig. 6-19
Service
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