Permobil Koala, Service Manual

Page: 10 / 32

10
Drive wheels
Fig. 14. Puller 304103-99-0.
Drive wheels
Removal
1. Switch off the main switch.
2. Lift up the chair and support it on blocks, so
that the wheels are off the ground.
3. Undo and remove the hubcap (6), bolt (3) and
the three washers (1 and 2), see fig. 15.
4. Pull the wheel off the shaft. Use puller
304103-99-0 if the wheel is tight, see fig. 14.
Fitting
1. Check the axle and rim for any damage. If
necessary, you should clean these parts of dirt
and rust. If any parts are damaged, they
should be replaced.
2. Check that the key fits solidly in the keyway of
the axle. If necessary, install the new key (4 or
5) and check for fit.
3. Lubricate the shaft with a thin layer of copper
paste (Würth 0893800x, Art. no.: 1820540).
Fig. 15. Wheel attachment.
Warning! Other types of bolts or washers are not
to be used..
Warning! Do not use any other type of thread lock.
Warning! Do not use any type of lubrication in the
threaded hole in the axle or on the bolt.
If necessary, you should clean these parts.
4. Fit the wheel onto the axle. The use of hand
force only is preferred, but, if need be,
carefully use a rubber mallet, whose head
diameter is no less than 1.5 inches (38 mm), to
ensure that the rim is fully seated upon the motor.
NB! Hitting too hard with a rubber mallet could
cause damage to the gear.
5. Mount the three washers (1) and (2) onto the
bolt (3) and secure the wheel.
Use a torque
wrench to tighten the bolt to 24 ft-Ibs (33Nm).
Install the hub cap (6). See Fig. 14.
NB! The washer (1) should be placed with the
most flat side inwards.
NB! The bolt must be used once only. Removed
bolt is not allowed to be refitted.
1. Washer, 8 HB 305 Fe/Zn 5 C2 (TBRSB 8,4x26x5)
2. Shim washer DIN 988 8 A2 (DB 8x14x0.5 Rostfri)
3. Bolt, ISO 4762 M8x25 10.9 Fe/Zn 5 C2 /
Locking coat DIN 267-28
4. Key DIN 6885A 6x6x16
5. Key DIN 6885A 6x6x22
6. Hubcap
6
3
2
1
4
5
2