45
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
MUTP2000171893021216
PHOTO NO. 7
ABRASION OF THE
TRACK PATTERN
PHOTO NO. 8
ABRASION OF THE RUB‐
BER DUE TO THE GUIDE
WHEELS (INITIAL
STAGE)
PHOTO NO. 9
ABRASION OF THE RUB‐
BER DUE TO THE GUIDE
WHEELS (FINAL STAGE)