Komatsu PW130ES-6K, Operation & Maintenance Manual

Page: 141 / 271

OPERATION OPERATION
140
WARNING
Failure to observe the following procedure may result in seri-
ous injury or death.
3. Twin wheel assembly - 3 part rim
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 pressure,
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.
Re - assembly & 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 orientation
shown in Fig. 1. Push it into place sufficient to clear the rim
gutter (groove) to enable the lock-ring to be fitted.
A
B
C
D
A Rim Base
B Loose flange
C Lockring
D Rim Gutter (groove)