Subaru XT 1988 Service Manual page 199

ENGINE
2-3
o
o
)
L2·478
Fig. 97
3) Measure the clearance between piston ring and piston ring
groove with a th ickness gauge.
Before measuring the clearance, clean the piston ring groove
and piston ring.
-----------
Standard Limit
Top 0.04 - 0.08 mm 0.15 mm
Clearance
ring
(0.0016 - 0.0031 in) (0.0059 in)
between piston
Second
0.03 - 0.07 mm 0.15 mm
ring and piston
ring (0.0012 - 0.0028 in) (0.0059 in)
ring groove
Oil ring 0 0
A5-076
Fig. 98
CONNECTING ROD
1) Replace connecting rod, if the large or small end thrust
surface is damaged.
2) Check for bend or twist using a connecting rod aligner.
Replace connecting rod if the bend or twist exceeds the limit.
Limit of bend or twist per
100
mm (3.94 in) in length:
0.10 mm (0.0039 in)
43
1 Thickness gauge
2 Connecting rod
1 Connecting rod
2 Thickness gauge
Fig. 99
A5-077
A5·078
3) Install connecting rod fitted with bearing to crankshaft
and measure the side clearance (thrust clearance). Replace
connecting rod if the side clearance exceeds the specified limit.
Connecting rod side clearance:
Fig. 100
Standard
0.070 - 0.330 mm (0.0028 - 0.0130 in)
Limit
0.4 mm (0.016 in)
Thickness
gauge
L2-479