Disassembly Of Backrest Element - Invacare Twister Service Manual

Twister / Twister Junior
Component
16. Quick-release bolt
17. Gas pressure spring
18. Spacer washer
19. Lining
20. DIN 985 nut M8
21. DIN 931 screw M8x45
22. 8 x countersunk self-tapping
screw 4.8x17
23. 4 x clamping piece
24. 4 x self-tapping screw with
cap
25. Backrest upholstery
26. Backrest belt
Note:
The backrest element is available with backrest upholstery (25) or with back belt (26).

9.12.1 Disassembly of backrest element

Note:
It is not imperative to adhere to the indicated steps. The gas pressure spring and the
Bowden cable, for example, can be dismounted without having first to remove the entire
backrest frame.
• If existing, remove headrest first. See chapter 9.9.
• Remove the quick-release bolt (16) located on the lower part of the backrest frame tube (1).
• Loosen nut (18), on the lower part of the support bracket (11), completely and detach
together with washer (19).
• Support actuator motor with your hand, remove screw (21) with washer (19) and detach gas
pressure spring.
• Loosen nuts (6), on the lower part of the support bracket (11), and detach together with
washers (3).
• Support the backrest frame tube (1) with your hand and remove screws (2) with washers (4
and 6) from the support bracket (11). Then detach backrest frame tube (1).
• Detach safety belt (7) from backrest frame tube (1).
• Press bushes (5) outward from their attachments in the backrest frame tube (1).
Note:
The bushes can only be removed from the inside to the outside.
Issued: 21.01.02
Check
• Damaged?
• Loose / damaged?
• Damaged?
• Damaged?
• Loose / damaged?
• Loose / damaged?
• Damaged?
• Damaged?
• Loose / damaged?
• Damaged?
• Damaged?
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Service Manual
Remedy
⇒ Replace
⇒ Tighten / replace.
⇒ Replace
⇒ Replace
⇒ Tighten / replace.
⇒ Tighten / replace.
⇒ Replace
⇒ Replace
⇒ Tighten / replace.
⇒ Replace
⇒ Replace