Subaru XT 1988 Service Manual page 256

2-3
ENGINE
5) Inspect individual crankshaft bearings for signs of flaking,
seizure, melting, and wear.
During the work, the crankshaft must not be turned nor the
crankcase inverted.
6)
Measure the oil clearance on each crankshaft bearing by
means of plastigauge as follows:
Torque:
(1)
Wipe off oil, dust, etc. on the surfaces to be measured.
(2) Install bearings in crankcase and set crankshaft in
position.
39 - 47 N'm (4.0 - 4.8 kg·m, 29 - 35 ft·lb)
(3) Cut the plastigauge to the bearing width and place it
on journal parallel with the crankshaft axis. Be careful not
to put it on the oil hole or groove. Bring together the
crankcase halves and tighten bolts to the specified torque.
Crankpin 0.0.
Front
Standard
44.995 - 45.010
mm
54.957 - 54.972
mm
(1.7715 -1.7720 in) (2.1637 -2.1642 in)
0.03
mm
(0.0012
in)
44.965 - 44.980
mm
54.927 - 54.942
mm
undersize (1.7703 - 1.7709
in)
(2.1625 - 2.1631
in)
0.05 mm (0.0020 in) 44.945 - 44.960
mm
54.907 - 54.922
mm
undersize (1.7695 - 1.7701 in) (2.1617 - 2.1623 in)
0.25
mm
(0.0098
in)
44.745 - 44.760
mm 54.707 - 54.722 mm
undersize
(1.7616 - 1.7622
in)
(2.1538 - 2.1544
in)
Crank journal 0.0.
Center, Center II
Rear
54.954 - 54.970
mm
54.955 - 54.970
mm
(2.1635 - 2.1642
in)
(2.1636 - 2.1642 in)
54.924 - 54.940
mm
54.925 - 54.940
mm
(2.1624 - 2.1630
in)
(2.1624 - 2.1630
in)
54.904 - 54.920
mm
54.905 - 54.920 mm
(2.1616 - 2.1622 in)
(2.1616 - 2.1622
in)
54.704 - 54.720
mm
54.705 - 54.720
mm
(2.1537 - 2.1543
in)
(2.1537 - 2.1543
in)
(4) Remove all bolts and separate crankcase. Measure the
plastigauge width with the scale printed on the plastigauge
case.
(5) If the measurement is not within the specification,
replace defective bearing with an undersize one, and
replace or recondition crankshaft as necessary.
Crankshaft oil clearance
Center & Center II
0.008 - 0.027
mm
(0.0003 - 0.0011
in)
Standard
Front & Rear
0.003 - 0.036
mm
(0.0001 - 0.0014
in)
Center & Center II 0.045 mm (0.0018 in)
Limit
Front & Rear 0.055
mm
(0.0022
in)
Fig. 245
100