Permobil Explorer Mini Service Manual page 34

Explorer Mini
5. Remove the four screws from the caster wheels assembly and
remove the caster wheels assembly.
The bracket to the top cover, visible when the base module is in upright
position, is also loosen.
6. Remove the two rubber dampers by hand.
7. Remove the six screws that attach the bottom cover to the metal
chassis.
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Repairs - Base module
Figure 60. Remove the caster wheels assembly.
Figure 61. Bracket to the top cover.
Figure 62. Remove the two rubber dampers.
Figure 63. Remove the six screws from the bottom
cover.