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12.
SERVICE
DATA
“STD”
in
the
following
table
is
the parts dimension from the brand new engine or the spare parts.
Whereas, “Limit”
shows
the maximum allowance for the parts to
be
used
on
the engine.
If
the measurement exceeds
beyond
the “Limit”, the part needs to be replaced and/or repaired.
12-
1
CLEARANCE DATA AND LIMITS
r
Flatness
1
Valve seat contact
width
I
Valve
guide inside dia.
IN.
EX.
EH
1
2-2
EH17-2
EH25-2
r
Unit
:
mrn
(in)
EH
12-2
/
17-2
/
25-2
STD
LESS
THAN
0.05
(0.002)
0.7
-
1
.O
(0.028
-
0.039)
5.500
-
5.51
8
(0.21
65
-
0.21
72)
6.035
-
6.053
(0.2376
-
0.2383)
Limit
0.1
(0.004)
2.0
(0.079)
5.65
(0.2224)
6.1
5
(0.2421)
-
58
-