Service Data; Clearance Data And Limits - Subaru EH09-2D Service Manual

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

CYLINDER HEAD
* Flatness
* Valve seat contact width
* Valve guide inside dia.
CYLINDER
* Inside dia.
* Roundiness after reboring.
* Cylindricity after reboring.
PISTON
* Piston size (At skirt in thrust direction)
ITEM
IN. EX.
STD
1st
reboring
2nd
reboring
STD
1st o / s
2nd o / s
STD
LESS THAN
0.05
(0.002)
0.8 - 1.1
(0.0315 - 0.0433)
5.500 - 5.518
(0.2165 - 0.2172)
51.0 - 51.019
(2.008 - 2.009)
51.250 - 51.269
(2.0177 - 2.0185)
51.500 - 51.519
(2.0276 - 2.0283)
LESS THAN
0.01
(0.004)
LESS THAN
0.015
(0.0006)
50.97 - 50.99
(2.0067 - 2.0075)
51.22 - 51.24
(2.0165 - 2.0173)
51.47 - 51.49
(2.0264 - 2.0272)
– 39 –
Unit : mm (in.)
Limit
0.1
(0.004)
2.0
(0.079)
5.65
(0.2224)
To be rebored when the
difference between max.
and min. of diameter reached
to 0.1 (0.004)
Ditto
-
-
-
50.88
(2.0031)
51.13
(2.0123)
51.38
(2.0228)