Bearing 1; Oil Clearance between Crankshaft Journal and Crankshaft; Replacement of Crankshaft Bearing 1- Page 236

ENGINE

L3560, L4060, L4760, L5060, L5460, L6060, WSM

1-S89

Oil Clearance between Crankshaft Journal and Crankshaft
Bearing 1

1. Measure  the  O.D.  of  the  crankshaft  journal  with  an  external

micrometer.

2. Measure the I.D. of the crankshaft bearing 1 with an internal

micrometer.

3. Calculate the oil clearance.

4. If the oil clearance is more than the allowable limit, replace the

crankshaft bearing 1.

5. If the same dimension bearing is not applicable because of the

crankshaft journal wear, replace it with an undersize one. Refer

to the table and figure.

(Reference)

• Undersize dimensions of crankshaft journal

9Y1210824ENS0099US0

Replacement of Crankshaft Bearing 1
(When removing)

1. Press out the used crankshaft bearing 1 with the replacing tool.

(See page G-56.)

(When installing)

1. Clean a new crankshaft bearing 1 and crankshaft journal bore,

and apply engine oil to them.

2. Make sure that the seam (1) of the new bearing 1 (2) points to

the exhaust manifold side (see the figure). Then press fit the

new bearing 1 (2) with the replacing tool.

9Y1210824ENS0100US0

Oil clearance between 

crankshaft journal and 

crankshaft bearing 1

Factory specification

0.0400 to 0.118 mm

0.00158 to 0.00464 in.

Allowable limit

0.20 mm

0.0079 in.

Crankshaft journal O.D.

Factory specification

59.921 to 59.940 mm

2.3591 to 2.3598 in.

Crankshaft bearing 1 I.D. Factory specification

59.980 to 60.039 mm

2.3615 to 2.3637 in.

Undersize

0.2 mm

0.008 in.

0.4 mm
0.02 in.

Dimension 

A

2.8 to 3.2 mm radius

0.11 to 0.12 in. radius

2.8 to 3.2 mm radius

0.11 to 0.12 in. radius

*Dimension 

B

1.0 to 1.5 mm relief

0.040 to 0.059 in. relief

1.0 to 1.5 mm relief

0.040 to 0.059 in. relief

Dimension 

C

59.721 to 59.740 mm dia.

2.3513 to 2.3519 in. dia.

59.521 to 59.540 mm dia.

2.3434 to 2.3440 in. dia.

The crankshaft journal must be fine-finished to higher than Rmax = 0.4S

*Holes to be de-burred and edges rounded with 1.0 to 1.5 mm

(0.040 to 0.059 in.) relief.

Dimension 

(A)

Factory specification

3.90 to 4.10 mm

0.154 to 0.161 in.

(1) Seam

(2) Crankshaft Bearing 1

(3) Cylinder Block

(A) Dimension

KiSC issued 03, 2016 A