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3.23 Operation
Deflation and removal
Before loosening the wheel retaining nuts, completely
deflate the tyres by removing the valve with the appropriate
tool. Always stand to the side during the deflating operation.
Release 8 of the wheel retaining nuts leaving 2 diagonally
opposed nuts to hold the assembly in position. Check that
there is no remaining pressure being exerted on these rema-
ing nuts by either the internal or external wheel assembly.
Once satisfied that the remaining nuts are under no pres-
sure, remove them.
In order to remove the tyre from the rim first remove the lock-
ring by progressively levering it from the gutter (groove). Do
not exert excessive force as this may deform the retaining
ring.
Remove the loose flange and then the tyre/tube.
Reassembly and inflation
Check thoroughly the condition of the wheel and rim for
signs of wear or damage.
Discard any defective or doubtful parts and replace with
approved replacement parts.
Clean the rims with a hard brush paying particular attention
to the bottom of the rim gutter (groove).
Fit the tyre to the rim base and fit the tube, ensuring that the
valve is correctly located in its through hole.
Place the loose flange against the tyre bead in the orienta-
tion shown in Fig. 1. Push it into place sufficient to clear the
rim gutter (groove) to enable the lock-ring to be fitted.
Insert the lock-ring with the aid of specific tools or with levers
and a suitable mallet. Check correct seating of the lock-ring
by measuring the dimension of the gap shown in Fig 2.
If it is not possible to achieve the stated gap with the lock-ring
seated correctly renew the rim assembly.
WARNING
It is essential that the lock-ring is seated correctly.
Put the wheel assembly into a safety cage and inflate the
tyre to a pressure of 1 - 1.5 bar.
3-148
Fig. 2
PW180-7E0 – VEAM400102
Operation
+8
12
-6
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