- Crankshaft-journal-to-crankshaft-journal bearing clearance
Out of specification → Replace the crankshaft journal bearings.
Crankshaft-journal-to-crank-shaft-journal bearing clearance: 0.014-0.037 mm (0.0006-0.0015 in)
Limit: 0.10 mm (0.0039 in)
Caution! Do not interchange the crankshaft journal bearings. To obtain the correct crankshaftjournal-to-crankshaft-journal-bearing clearance and prevent engine damage, the crankshaft journal bearings must be installed in their original positions.
a. Clean the crankshaft journal bearings, crankshaft journals, and bearing portions of the crankcase.
b. Place the upper crankcase upside down on a bench.
c. Install the crankshaft journal upper bearings «1» and the crankshaft into the upper crankcase.
Note: Align the projections «a» on the crankshaft journal upper bearings with the notches «b» in the upper crankcase.
d. Put a piece of Plastigauge® «2» on each crankshaft journal.
Note: Do not put the Plastigauge® over the oil hole in the crankshaft journal.
e. Install the crankshaft journal lower bearings «1» into the lower crankcase and assemble the crankcase halves.
Notes:
- Align the projections «a» of the crankshaft journal lower bearings with the notches «b» in the lower crankcase.
- Do not move the crankshaft until the clearance measurement has been completed.
f. Tighten the bolts to specification in the tightening sequence cast on the crankcase.
Crankcase bolt:
- Bolt «1»-«10»:
- 1st: 20 Nm (2.0 m·kg, 14 Wlb)
- 2nd: 20 Nm (2.0 m·kg, 14 ft·lb)
- 3rd: +60°
- Bolt «11»-«16»:
- 24 Nm (2.4 m·kg, 17 ft·lb)
- Bolt «17»-«26»:
- 12 Nm (1.2 m·kg, 8.7 ft·lb)
M9 x 105 mm (4.1 in) bolts: «1»-«10»
M8 x 60 mm (2.4 in) bolt: «11» LOCTITE®
M8 x 60 mm (2.4 in) bolts: «12», «16»
M6 x 70 mm (2.8 in) bolts: «19», «21», «23»
M6 x 65 mm (2.5 in) bolts: «17», «18»
M6 x 60 mm (2.4 in) bolt and washer: «22»
M6 x 60 mm (2.4 in) bolts: «24», «25»
M6 x 50 mm (2.0 in) bolts: «20», «26»
M8 x 50 mm (2.0 in) bolts: «13»-«15»
* Following the tightening order, loosen the bolt one by one and then retighten it to the specific torque.
Note: Lubricate the crankcase bolt threads with engine oil.
Refer to «Crankcase».
g. Remove the lower crankcase and the crankshaft journal lower bearings.
h. Measure the compressed Plastigauge® width «c» on each crankshaft journal.
If the crankshaft-journal-to-crankshaft-journal-bearing clearance is out of specification, select replacement crankshaft journal bearings.
2. Select:
- Crankshaft journal bearings (J1-J5)
Notes:
- The numbers «A» stamped into the crankshaft web and the numbers «1» stamped into the lower crankcase are used to determine the replacement crankshaft journal bearing sizes.
- «J1-J5» refer to the bearings shown in the crankshaft illustration.
- If «J1-J5» are the same, use the same size for all of the bearings.
- If the size is the same for all «J1 to J5» one digit for that size is indicated. (Crankcase side only)
For example, if the crankcase «J1» and crankshaft web «J1» numbers are «6» and «2» respectively, then the bearing size for «J1» is:
«J1» (crankcase) - «J1» (crankshaft web) - 1 = 6 - 2 - 1 = 3 (brown)
| CRANKSHAFT JOURNAL BEARING COLOR CODE | |
| 0 | White |
| 1 | Blue |
| 2 | Black |
| 3 | Brown |
| 4 | Green |
