Geely EC718, EC718RV, EC715, EC715RV. Manual part — 124

FE02-0260b

13. Insert a flat screwdriver into the position shown in the

graphic and loosen the crankcase rear end.

FE02-0261b

14. Remove the crankcase.

FE02-0262b

15. Remove the No.3 bearing crankshaft thrust film.

Note

Rotate the crankshaft, so that thrust film turns to
facilitate removal.

Engine

Engine Mechanical System JL4G18-D

2-411

FE02-0263b

16. Remove the crankshaft.

Crankshaft inspection, the crankshaft bearing clearance
matching inspection procedure:

1.

Measure the main bearing bore diameter with an inner
diameter micrometer and record.

2.

Measure the crankshaft axis with an outside diameter
micrometer and record.

3.

Select the crankshaft main bearing sizes according to the
recorded sizes in the following table .

Main Bearing

Bore Diameter

(mm/in)

Crank Spindle

Diameter

Diameter (mm/

in)

Thickness Of The

Main Bearing (mm/

in)

52.005-52.011 /

2.0474-2.0477

(No.1)

47.994-48 /

1.8895-1.8898

(No.1)

1.993

≤ t ≤

1.996/0.0785 ≤ t ≤ 0.

0786

(No.2)

52.011-52.017 /

2.0477-2.0479

(No.2)

47.994-48 /

1.8895-1.8898

(No.1)

1.996

≤ t ≤

1.999/0.0786 ≤ t ≤ 0.

0787

(No.3)

52.005-52.011 /

2.0474-2.0477

(No.1)

47.988-47.994 /

1.8893-1.8895

(No.2)

52.017-52.021 /

2.0479-2.0481

(No.3)

47.994-48 /

1.8895-1.8898

(No.1)

1.999

≤ t ≤

2.002/0.0787 ≤ t ≤ 0.

0788

(No.4)

52.005-52.011 /

2.0474-2.0477

(No.1)

47.982-47.988 /

1.8891-1.8893

(No.3)

2-412

Engine Mechanical System JL4G18-D

Engine

Main Bearing

Bore Diameter

(mm/in)

Crank Spindle

Diameter

Diameter (mm/

in)

Thickness Of The

Main Bearing (mm/

in)

52.011-52.017 /

2.0477-2.0479

(No.2)

47.982-47.988 /

1.8891-1.8893

(No.3)

2.002

≤ t ≤

2.005/0.0788 ≤ t ≤ 0.

0789

(No. 5)

52.017-52.021 /

2.0479-2.0481

(No.3)

47.988-47.994 /

1.8893-1.8895

(No.2)

52.017-52.021 /

2.0479-2.0481

(No.3)

47.982-47.988 /

1.8891-1.8893

(No.3)

2.005

≤ t ≤

2.008/0.0789 ≤ t ≤ 0.

0791

(No. 6)

FE02-0482b

4.

Install the crankshaft bearing crankshaft and check
whether the middle of the crankshaft journal has
acceptable loss of roundness and the beating degree.

Standard Value:
Roundness 0.003 mm (Metric) 0.0001 in (US English)
Run Out 0.02 mm (Metric) 0.0008 in (US English)

5.

Check the crankshaft axial clearance.

Standard Value:
0.04-0.24 mm (Metric) 0.0015-0.0094 in (US English)

1

FE02-0483b

6.

With a plastic gap measurement regulator, measure all
the crankshaft bearings.

Note

Apply grease on the crankshaft journal and
crankshaft bearings and lubricate slightly so the
plastic gap measurement regulator will not be torn
when measure the clearance of the crankshaft
bearing cap.

7.

According to the width of bearing 1, cut the plastic gap
measurement regulator, place the plastic along the axis
between the journal and the crankshaft bearings.

Engine

Engine Mechanical System JL4G18-D

2-413

7

3

1

5

9

10

6

2

4

8

FE02-0269b

8.

Install the crankcase, install and tighten the crankshaft
bearing cap bolts according to the sequence shown in the
graphic.

Torque
First Pass: 44 Nm (Metric) 32.5 lb-ft (US English)
Second Pass: 60 Nm (Metric) 44.5 lb-ft (US English)

1

FE02-0484b

9.

Remove the crankcase.

10. Measure the width of the plastic strip, check whether the

value of crankshaft bearing clearance is within the
following range:

Standard Value:
0.015-0.033 mm (Metric) 0.0006-0.0013 in (US English)

11. If the gap value is not within the specified range, re-adjust

the crankshaft clearance. If necessary, replace the
crankshaft.

Installation Sequence:

FE02-0264b

1.

Clean all the relevant parts.

2.

Apply a small amount of engine oil to the crankshaft
bearing.

3.

Install the selected crankshaft bearings.

2-414

Engine Mechanical System JL4G18-D

Engine