Subaru 2009 IMPREZA, Руководство по обслуживанию

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ME(H4SO)-4
General Description
MECHANICAL
Piston
Piston grade point mm (in) 38.2 (1.504)
Outer diameter mm (in)
Standard
A 99.505 — 99.515 (3.9175 — 3.9179)
B 99.495 — 99.505 (3.9171 — 3.9175)
0.25 (0.0098) OS 99.745 — 99.765 (3.9270 — 3.9277)
0.50 (0.0197) OS 99.995 — 100.015 (3.9368 — 3.9376)
Piston pin
Degree of fit
Piston pin must be fitted into position with
thumb at 20°C (68°F).
Clearance between piston hole and
piston pin
mm (in) Standard 0.004 — 0.008 (0.0002 — 0.0003)
Piston ring
Piston ring gap mm (in)
Top ring Standard 0.20 — 0.35 (0.0079 — 0.0138)
Second ring Standard 0.37 — 0.52 (0.0146 — 0.0205)
Oil ring Standard 0.20 — 0.50 (0.0079 — 0.0197)
Clearance between piston ring
and piston ring groove
mm (in)
Top ring Standard 0.040 — 0.080 (0.0016 — 0.0031)
Second ring Standard 0.030 — 0.070 (0.0012 — 0.0028)
Connecting
rod and
connecting
rod bearing
Bend or twist per 100 mm (3.94 in) in
length
mm (in) Limit 0.10 (0.0039)
Thrust clearance mm (in) Standard 0.070 — 0.330 (0.0028 — 0.0130)
Oil clearance mm (in) Standard 0.016 — 0.044 (0.0006 — 0.0017)
Bearing size
(Thickness at center)
mm (in)
Standard 1.492 — 1.501 (0.0587 — 0.0591)
0.03 (0.0012) US 1.510 — 1.513 (0.0594 — 0.0596)
0.05 (0.0020) US 1.520 — 1.523 (0.0598 — 0.0600)
0.25 (0.0098) US 1.620 — 1.623 (0.0638 — 0.0639)
Bushing of
small end Clearance between piston pin and
bushing
mm (in) Standard 0 — 0.022 (0 — 0.0009)
Crankshaft
and
crankshaft
bearing
Bending limit mm (in) 0.035 (0.0014)
Crank pin
Out-of-roundness mm (in) 0.003 (0.0001)
Cylindricality mm (in) 0.004 (0.0002)
Grinding limit (dia.) mm (in) To 51.750 (2.0374)
Crank journal
Out-of-roundness mm (in) 0.005 (0.0002)
Cylindricality mm (in) 0.006 (0.0002)
Grinding limit (dia.) mm (in) To 59.758 (2.3527)
Crank pin outer diameter mm (in)
Standard 51.984 — 52.000 (2.0466 — 2.0472)
0.03 (0.0012) US 51.954 — 51.970 (2.0454 — 2.0461)
0.05 (0.0020) US 51.934 — 51.950 (2.0446 — 2.0453)
0.25 (0.0098) US 51.734 — 51.750 (2.0368 — 2.0374)
Crank journal outer diameter mm (in)
Standard 59.992 — 60.008 (2.3619 — 2.3625)
0.03 (0.0012) US 59.962 — 59.978 (2.3607 — 2.3613)
0.05 (0.0020) US 59.942 — 59.958 (2.3599 — 2.3605)
0.25 (0.0098) US 59.742 — 59.758 (2.3520 — 2.3527)
Bearing size
(Thickness at center)
mm (in)
#1, #3
Standard 1.998 — 2.011 (0.0787 — 0.0792)
0.03 (0.0012) US 2.017 — 2.020 (0.0794 — 0.0795)
0.05 (0.0020) US 2.027 — 2.030 (0.0798 — 0.0799)
0.25 (0.0098) US 2.127 — 2.130 (0.0837 — 0.0839)
#2, #4,
#5
Standard 2.000 — 2.013 (0.0787 — 0.0793)
0.03 (0.0012) US 2.019 — 2.022 (0.0795 — 0.0796)
0.05 (0.0020) US 2.029 — 2.032 (0.0799 — 0.0800)
0.25 (0.0098) US 2.129 — 2.132 (0.0838 — 0.0839)
Thrust clearance mm (in) Standard 0.030 — 0.115 (0.0012 — 0.0045)
Oil clearance mm (in) Standard 0.010 — 0.030 (0.0004 — 0.0012)