Wheels And Tyres - Invacare G40 Service Manual

8.2

Wheels and tyres

NOTE:
• Back and front wheels are all fixed with four countersunk
screws on the wheel hubs.
• Construction of rims is equal.
• Because of that the disassembly is identical.
1 Front wheel, compl.
2 Rim (part 1) with 3 (part2)
4 Tyre casing with tube 5
6 Countersunk screw with -
hexagon socket
Check
• Tyre looses air?
• Tyre casing damaged?
• Screws loose?
• Rims damaged??
Complete disassembly
• Release countersunk screws (6) crosswise.
• Prop up wheel chair, so that the wheel is free.
• Screw out countersunk screws (6) completely and take off wheel (1or7).
• Let out air, release head screw (12) crosswise and remove.
• Disassemble rim (part1, part 2).
• Remove tube out of tyre casing.
• Repair or renew tube (size 3.00-10 front, 3.00-8 back).
Assembly
• Fill in little air until tube is round.
• Put tube in tyre casing and put in both rim halfs from outside into casing.
CAUTION:
• The recesses of rim halfs must surround the valve.
• The tube must not be squeezed between the rim halfs.
• Put in head screw (12), drive in crosswise and tighten with torque wrench (25 to 30 Nm).
• Pump up tyre to a pressure of 2,5 bar and screw on valvecap.
• Put wheel on hub, set in countersunk screws (6) and tighten crosswise with 25 Nm.
CAUTION:
• The countersunk screws (6) must not be greased.
• During factory assembly the screws are set in with plasbolt. They can be assembled / disassembled
up to 6 times.
• At the latest screws must be cleaned during 7. assembly and then set in with Loctite.
• Tighten screws with 25 Nm.
7 Back wheel, compl.
8 Rim (part 1) with 9 (part 2)
10 Tyre casing with tube 11
12 Had cap screw with hexa
Action
> Repair or replace tube.
> Check casing on
foreign substance.
> Replace tyre casing.
> Tighten screws.
> Replace rims.
6
2, 3
Back wheel,
disassembled
7
8, 9
Front wheel,
assembled
1
4
5
12
10
11
21