Ford Corsar Repair Manual page 86

CYLINDER BLOCK
Inspection (Cont'd)
b. Grade number of each crankshaft main journal is punched
on crankshaft.
c. Select main bearing with suitable thickness according to the
following table.
Main bearing grade number:
For example:
Main journal grade number: 1
Crankshaft journal grade number: 2
Main bearing grade number = 1
+
2
= 3
Inside micrometer
2
2
3
4
Main journal
Crankshaft
journal grade number
0
1
2
Connecting rod bearing (Big end)
1. Install connecting rod bearing to connecting rod and cap.
2. Install connecting rod cap to connecting rod.
Tighten bolts to the specified torque.
3. Measure inner diameter "C" of each bearing.
4. Measure outer diameter "Dp" of each crankshaft pin journal.
5. Calculate connecting rod bearing clearance.
Connecting rod bearing clearance = C
-
Dp
Standard:
0.010
-
0.035 mm (0.0004
-
0.0014 in)
Limit: 0.09 mm (0.0035 in)
6. If it exceeds the limit, replace bearing.
7. If clearance cannot be adjusted within the standard of any
bearing, grind crankshaft journal and use undersized bearing.
Refer to step 7 of "BEARING CLEARANCE
-
Main bearing"
0
0
1
2
1
1
2
3