Crankshaft Side Clearance

Standard: 0.05 ∼ 0.25 mm (0.0020 ∼ 0.0098 in.)

Service Limit: 0.40 mm (0.0157 in.)

CRANKSHAFT/TRANSMISSION 9-23 Balancer

Balancer Removal

• Split the crankcase (see Crankcase Splitting).

• Pull the balancer shaft with the balancer gear out of the crankcase.

Balancer Installation

• Apply oil to the inside of the balancer shaft bearing insert.

• Align the timing mark [B] on the balancer gear [A] with the timing mark [B] on the balancer drive gear [C] of the crankshaft.

• Assemble the crankcase (see Crankcase Assembly).

Balancer Shaft Bearing Insert/Journal Clearance

• Measure the bearing insert/journal clearance using a plastigage.

OSplit the crankcase and wipe each bearing insert and jour­nal surface clean of oil.

OCut strips of plastigage to bearing insert width, and place a strip on each journal parallel to the balancer shaft so that the plastigage will be compressed between the journal and the bearing insert.

OInstall the lower crankcase half, and tighten the case bolts to the specified torque.

Torque - Crankcase 8 mm Bolts: 27 N-m (2.8 kgf-m, 20 ft-lb) Crankcase 6 mm Bolts: 12 N-m (1.2 kgf-m, 104 in-lb)

NOTE

O Do not turn the balancer shaft during clearance mea­surement.

ORemove the lower crankcase half and measure the plas­tigage width [A] to determine the bearing insert/journal [B] clearance.

Balancer Shaft Bearing Insert/Journal Clearance
Standard: 0.020 ~ 0.050 mm (0.0008 ~ 0.0020 in.)

Service Limit: 0.09 mm (0.0035 in.)

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

• If the clearance is between 0.050 mm (0.0020 in.) and the service limit 0.09 mm (0.0035 in.), replace the bearing in­serts [A] with inserts painted blue [B] Check insert/journal 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 balancer shaft journal.

Balancer Shaft Journal Diameter
Standard: 27.987 ~ 28.000 mm (1.1019 ~ 1.1024 in.)

Service Limit: 27.96 mm (1.1008 in.)

9-24 CRANKSHAFT/TRANSMISSION