O
O
P
P
E
E
R
R
A
A
T
T
I
I
O
O
N
N
A
A
N
N
D
D
M
M
A
A
I
I
N
N
T
T
E
E
N
N
A
A
N
N
C
C
E
E
M
M
A
A
N
N
U
U
A
A
L
L
TP2000
44
MUTP2000171893021216
PHOTO NO. 4
BREAKAGE OF THE
TRACK PATTERN CAU‐
SED BY BENDING STRESS
(CURVING) ON THE RUB‐
BER
PHOTO NO. 5
BREAKAGE ON THE OUT‐
SIDE PART OF THE RUB‐
BER UNDER THE EDGE OF
THE STEEL CORE
PHOTO NO. 6
BREAKAGE ON THE INSI‐
DE PART OF THE RUBBER
ON THE SIDE OF THE
STEEL CORE
