Crankshaft: Specifications
Crankshaft Thrust ClearanceUsing a dial indicator, measure the thrust clearance while prying the crankshaft back and forth with a screwdriver.
Standard thrust clearance 0.09 to 0.19 mm (0.0035 to 0.0075 inch)
Maximum thrust clearance 0.30 mm (0.0118 inch)
If the thrust clearance is greater than maximum, replace the thrust washers as a set. Check the crankshaft and block for wear and repair or replace if necessary.
HINT: Thrust washer thickness 2.43 to 2.48 mm (0.0957 to 0.0976 inch)
Crankshaft
Using a dial indicator and V-blocks, measure the circle runout as shown in the illustration.
Main Journal
Maximum circle runout 0.03 mm (0.0012 inch)
Diameter 45.988 to 46.000 mm (1.8106 to 1.8110 inch)
Maximum taper and distortion 0.02 mm (0.0008 inch)
Crank Pin
Diameter 39.992 to 40.000 mm (1.5745 to 1.5748 inch)
Calculate the taper and distortion of the crank pin.
Maximum taper and distortion 0.02 mm (0.0008 inch)
Timing Sprocket and Chain
Wrap the chain around the timing sprocket.
Using a vernier calipers, measure the timing sprocket diameter with the chain.
Standard sprocket diameter (w/ chain): 51.72 mm (2.0362 inch)
Minimum sprocket diameter (w/ chain): 50.5 mm (1.988 inch)
NOTICE: When measuring the diameter, vernier calipers must be in contact with the chain roller.
If the diameter is less than minimum, replace the chain and crankshaft.
Crankshaft Bearing Cap Set Bolt
Using vernier calipers, measure the tension portion diameter of the bolt.
Standard diameter 7.3 to 7.5 mm (0.287 to 0.295 inch)
Minimum diameter 7.2 mm (0.283 inch)
If the diameter is less than minimum, replace the bolt.