Check, remachine flywheel

AR03.30-T-8022A

Check, remachine flywheel

10.11.11



Removing

1

Remove flywheel (1)

AR03.30-T-8002A



Checking

2

Clean flywheel (1) and inspect clutch surface (friction surface) for scorch points, scores and cracks, and inspect flatness with a straightedge (3)

 If a problem exists, the clutch surface (friction surface) must be machined by grinding or position-turning.

Straightedge

Clutch friction surface

*BE03.30-N-1002-03E

If grooves or fissures are deeper than the maximum approved figure for wear 

Replace flywheel.

Machining

3

Machine flywheel (1)

Flywheel outer diameter (A)
Flywheel diameter for mounting starter ring gear (B)
Flywheel diameter for clutch (D)

*BE03.30-N-1001-03E

Flywheel - overall width (F)
The width between the friction surface and contact surface must not be less than the flywheel minimum width (E) when machining the clutch surface (friction surface).

*BE03.30-N-1003-03E

If peak-to-valley height of clutch friction surface is excessive, this will increase the wear of the clutch lining.
If the peak-to-valley height is insufficient, this can result in separating problems of the clutch.
After machining, there must not be any shrink holes or chatter marks present.

*BE03.30-N-1002-03E



Install

4

Install flywheel (1)

AR03.30-T-8002A

Number

Designation

Engine 447

BE03.30-N-1001-03E

Flywheel dia.

Outer (A)

mm

487

for mounting

Default

mm

432.490 to 432.645

Starter ring gear (B)

Deviation 0.5

mm

431.990 to 432.145

For mounting the clutch (D)

mm

475.000 to 475.063

See picture

-

BE03.30-N-1002-03E

Clutch friction surface

Peak-to-valley height (Rz)

μm

16

Flatness

mm

0.03

BE03.30-N-1003-03E

Flywheel

Overall width (F)

mm

66.7 to 67

Minimum width between

New

mm

61.9 to 62.1

friction face and

at least

mm

59.9 to 60.1

mounting flange

See picture

-

for repairs (E)

Number

Designation

Engine 489

BE03.30-N-1001-03E

Flywheel dia.

Outer (A)

mm

487

for mounting

Default

mm

432.490 to 432.645

Starter ring gear (B)

Deviation 0.5

mm

431.990 to 432.145

For mounting the clutch (D)

mm

475.000 to 475.063

See picture

-

BE03.30-N-1002-03E

Clutch friction surface

Peak-to-valley height (Rz)

μm

16

Flatness

mm

0.03

BE03.30-N-1003-03E

Flywheel

Overall width (F)

mm

66.7 to 67

Minimum width between

New

mm

61.9 to 62.1

friction face and

at least

mm

59.9 to 60.1

mounting flange

See picture

-

for repairs (E)

-