CYLINDER BLOCK — Inspection (Cont'd) / Connecting Rod Bearing (Big end) / Connecting Rod Clearance (Small end)
EM-52prose procedureInspection (Cont'd)
Connecting rod bearing (Big end)
Connecting rod bearing clearance (Big end)
- 1Install connecting rod bearing to connecting rod and cap.
- 2Install connecting rod cap to connecting rod.Tighten bolts to the specified torque.
- 3Measure inner diameter of each bearing.
SEM153B - 4Measure outer diameter of each crankshaft pin journal.
SEM506A - 5Calculate connecting rod bearing clearance. Connecting rod bearing clearance = Inner dia. − Outer dia. Standard: 0.010 - 0.044 mm (0.0004 - 0.0017 in). Limit: 0.064 mm (0.0025 in).
- 6If it exceeds the limit, replace bearing.
- 7If 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".
- 8If bearing, crankshaft or connecting rod is replaced with a new one, select connecting rod bearing according to the following table.
Connecting rod bearing thickness
Standard
Thickness mm (in)1.504 - 1.508 (0.0592 - 0.0594)
Undersize
Thickness mm (in)1.629 - 1.633 (0.0641 - 0.0643)
| Specification | Value |
|---|---|
| Connecting rod bearing clearance — StandardStandard | 0.010 - 0.044 (0.0004 - 0.0017)mm (in) |
| Connecting rod bearing clearance — LimitLimit | 0.064 (0.0025)mm (in) |
Connecting rod bearing clearance — StandardStandard
0.010 - 0.044 (0.0004 - 0.0017)mm (in)
Connecting rod bearing clearance — LimitLimit
0.064 (0.0025)mm (in)
Connecting rod clearance (Small end)
- 1Measure inner diameter of connecting rod small end. Standard: 17.962 - 17.978 mm (0.7072 - 0.7078 in).
SEM151B - 2Measure outer diameter of piston pin. Standard: 17.994 - 18.000 mm (0.7084 - 0.7087 in).
SEM903A - 3Calculate connecting rod bushing clearance. Connecting rod bushing clearance = Inner diameter − pin outer diameter. Standard: −0.016 to −0.038 mm (−0.0006 to −0.0015 in). If it exceeds the limit, replace connecting rod assembly or connecting rod bushing and/or piston pin.
| Specification | Value |
|---|---|
| Connecting rod small-end inner diameterStandard | 17.962 - 17.978 (0.7072 - 0.7078)mm (in) |
| Piston pin outer diameterStandard | 17.994 - 18.000 (0.7084 - 0.7087)mm (in) |
| Connecting rod bushing clearance (Inner dia. − pin O.D.)Standard (interference fit) | −0.016 to −0.038 (−0.0006 to −0.0015)mm (in) |
Connecting rod small-end inner diameterStandard
17.962 - 17.978 (0.7072 - 0.7078)mm (in)
Piston pin outer diameterStandard
17.994 - 18.000 (0.7084 - 0.7087)mm (in)
Connecting rod bushing clearance (Inner dia. − pin O.D.)Standard (interference fit)
−0.016 to −0.038 (−0.0006 to −0.0015)mm (in)
See also
BEARING CLEARANCE — Main bearing