– 33 –
4. 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.
4-1 CLEARANCE DATA AND LIMITS
ITEM
STD Limit
0.1
(0.004)
2.0
(0.079)
5.65
(0.2224)
LESS THAN
0.05
(0.002)
0.8 - 1.1
(0.0315 - 0.0433)
IN. EX.
STD
1st
reboring
2nd
reboring
5.500 - 5.518
(0.2165 - 0.2172)
Ditto
51.250 - 51.269
(2.0177 - 2.0185)
-
51.500 - 51.519
(2.0276 - 2.0283)
CYLINDER HEAD
* Flatness
To be rebored when the
difference between max.
and min. of diameter reached
to 0.1 (0.004)
51.0 - 51.019
(2.008 - 2.009)
CYLINDER
* Inside dia.
STD
50.88
(2.0031)
50.97 - 50.99
(2.0067 - 2.0075)
PISTON
* Piston size (At skirt in thrust direction)
2nd o / s
51.38
(2.0228)
51.47 - 51.49
(2.0264 - 2.0272)
1st o / s
51.13
(2.0123)
51.22 - 51.24
(2.0165 - 2.0173)
-
LESS THAN
0.01
(0.004)
* Roundiness after reboring.
-
LESS THAN
0.015
(0.0006)
* Cylindricity after reboring.
* Valve seat contact width
Unit : mm (in.)
* Valve guide inside dia.
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