Replacing Motor-Gearbox Unit - Invacare Bora XTR Service Manual

Invacare® Bora® / Spectra® XTR Series
7.
Compress spring F in downwards direction and
remove spring.
8. Remove plastic cap G. Pay attention to the powder
coating.
9. Loosen and remove nut H and washer I on inner
side.
10. Secure swing arm. Remove bolt J and swing arm.
11. If required, replace other components such as the
motor-gearbox unit. See corresponding topics.
Installing Swing Arm To Chassis
1. Install parts in reverse order.
2. Test all functions.

5.7.4 Replacing Motor-Gearbox Unit

CAUTION!
Risk of Crushing to Hands and Feet by Weight
of Mobility Device
– Pay attention to hand and feet.
– Use proper lifting techniques.
CAUTION!
Risk of Uncontrolled Movement of Mobility
Device
– Turn off power supply (ON/OFF key).
– Engage drive.
– Before raising mobility device, secure wheels
by blocking them with wedges.
– Prevent the mobility device tipping by
propping it up on a wooden block which
is long and wide enough under the battery
case. If the wooden block is too short or too
high, the mobility device can still tip.
CAUTION!
Risk of crushing
The motor-gearbox unit is very heavy. Risk of
injury to hands.
– Pay attention to the heavy weight.
• 5 mm Allen key
• 10 mm socket wrench
• 13 mm wrench (2x)
• Torque wrench 0 – 10 Nm (or similar)
• Torque wrench 5 – 30 Nm (or similar)
• Torque wrench 10 – 80 Nm (or similar)
• Two oblong wooden blocks, at least 14 x 14
x 30 cm
Preparing Unit Replacement
This chapter refers to models with removable battery
boxes.
20
For models with fixed battery trays it is required to remove
the whole swing arm. See 5.7.3 Replacing Swing Arm,
page 19.
1. Turn off electronics on the remote.
2. Remove the rear battery boxes. See 5.11.1 Removing
Battery Boxes, page 36.
3. Pull motor plug out of power module.
4. Open the cable clamps and expose motor cable.
5. Remove drive wheel. See Replacing Drive Wheel
(5–Screw Installation).
6. Remove wheel hub. See 5.8.6 Replacing drive wheel
hub, page 26.
Removing Motor-Gearbox Unit
1. Remove fender. See 5.9.2 Replacing fender, page 32.
2.
Loosen and remove bolts (1) together with washers.
3. Pull motor-gearbox unit (3) rearward out of holder (2).
Take into account heavy weight of components.
Installing Motor-Gearbox Unit
1. Replace defective components.
2.
Before installing new motor-gearbox unit, make sure
sealing ring (2) is correctly mounted. The sealing ring
securely attaches motor (3) and gearbox (1). The ring
must be installed such that the self-locking nut (4)
is located on the outside.
3. If sealing ring is incorrectly installed, rotate it
around as described in5.7.5 Replacing or Rotating
Motor-Gearbox Unit Sealing Ring, page 21.
4. Install motor-gearbox unit in reverse order.
Fig. 5-8
Fig. 5-9
1528338-Q