Crankpin Diameter Marks

NOTE

O Do not move the connecting rod and crankshaft during clearance measurement.

ORemove the connecting rod big end caps, and mea­sure the plastigage width [A] to determine the bearing insert/crankpin [B] clearance.

Connecting Rod Big End Bearing Insert/Crankpin
Clearance
Standard: 0.036 ~ 0.066 mm (0.0014 ~ 0.0026 in.)

Service Limit: 0.10 mm (0.0039 in.)

• If the clearance is within the standard, no bearing insert replacement is required.

• If the clearance is between 0.066 mm (0.0026 in.) and the service limit (0.10 mm, 0.0039 in.), replace the bear­ing inserts [A] with inserts painted blue [B]. Check in­sert/crankpin clearance with a plastigage. The clearance may exceed the standard slightly, but it must not be less than the minimum in order to avoid bearing seizure.

• If the clearance exceeds the service limit, measure the diameter of the crankpins.

Crankpin Diameter
Standard: 37.984-38.000 mm (1.4954-1.4961 in.)

Service Limit: 37.97 mm (1.4949 in.)

• If any crankpin has worn past the service limit, replace the crankshaft with a new one.

• If the measured crankpin diameters are not less than the service limit, but do not coincide with the original diameter markings on the crankshaft, write new marks on it.

None: 37.984 - 37.994 mm (1.4954 - 1.4958 in.)

O: 37.995 - 38.000 mm (1.4959 - 1.4961 in.)

A: Crankpin Diameter Marks, "O" mark or no mark.

9-20 CRANKSHAFT/TRANSMISSION

Crankshaft/Connecting Rods

• Put the connecting rod big end caps on the rods and
tighten the nuts to the specified torque.

Torque - Connecting Rod Big End Cap Nuts: 36 N·m (3.7 kgf·m, 27 ft·lb)

• Measure the bore diameter, and mark each connecting
rod big end in accordance with the bore diameter.

Дата добавления: 2014-12-23