Check, remachine flywheel · ar0330g8022b · Mercedes-Benz WIS

AR03.30-G-8022B

Check, remachine flywheel

16.8.11

ENGINES 900.915 /916 /920 /921, 902.923 /924 /935, 904.927 /928 /952 /953, 906.935 /955, 924.916 /923 /931

G03.30-3108-09

1.1 Flywheel (engine 900.915/916, 904.927/928 using a 443 dia. flywheel and 362 dia. clutch,
engine 900.920/921, 904.952/953, 924.916/923 931 using a 403 dia. flywheel and 362 dia. clutch)

1.2 Flywheel (engine 902, 906 with 443 dia. flywheel and
395 dia. clutch)

2 Starter ring gear

3 Straightedge

B Flywheel dia. for mounting the starter ring gear

C Flywheel dia. at crankshaft flange

D Flywheel dia. for clutch mounting

E Minimum flywheel width

F Flywheel overall width

	Removing
1	Remove flywheel (1.1 or 1.2)		AR03.30-G-8002B
	Checking
2	Clean the flywheel (1.1 or 1.2), check the clutch friction surface for scorch marks, score marks and cracks, and check the surface flatness with a straightedge (3)	 If there is a problem, the clutch friction surface must be reworked by grinding or precision machining.
		 If score marks or cracks exceed the maximum permitted material removal, replace flywheel (1.1 or 1.2).	*BE03.30-N-1008-03I
	Machining
3	Machine the flywheel (1.1 or 1.2)	 If the peak-to-valley height of the 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 clutch separation problems. After machining, there must not be any cavities or chatter marks on the clutch friction surface.
			*BE03.30-N-1002-03I
			*BE03.30-N-1003-03I
			*BE03.30-N-1004-03I
			*BE03.30-N-1005-03I
			*BE03.30-N-1006-03I
			*BE03.30-N-1007-03I
		 The flywheel width should not be less than minimum width (E) between the clutch friction surface and the contact surface.	*BE03.30-N-1008-03I
4	Check flywheel (1.1 or 1.2) for radial and lateral trueness		*BE03.30-N-1009-03I
	Install
5	Install flywheel (1.1 or 1.2)		AR03.30-G-8002B

Check values for flywheel

Number	Designation		Engine 900.915/916, 904.927/928 with 443 dia. flywheel and 362 dia. connector	Engine 900.920/921, 904.952/953, 924.916/923/931 with 403 dia. flywheel and 362 dia. connector


BE03.30-N-1002-03I	Flywheel dia. for mounting starter ring gear (B)	mm	392.435 to 392.575	360.435 to 360.575
BE03.30-N-1003-03I	Flywheel dia. at crankshaft flange (C)	mm	114.960 to 115.020	114.960 to 115.020
BE03.30-N-1004-03I	Flywheel dia. for mounting clutch (D)	mm	435.000 to 435.063	395.000 to 395.057
BE03.30-N-1005-03I	Hole circle dia. for clutch	mm	410	375
BE03.30-N-1006-03I	Peak-to-valley height (Rz) Clutch friction surface	μm	16	16
BE03.30-N-1007-03I	Flywheel overall width (F)	mm	64	64
BE03.30-N-1008-03I	Flywheel - minimum width between friction surface and mounting flange for repairs (E)	mm	55	55
BE03.30-N-1009-03I	Flywheel - permissible concentricity and lateral trueness deviation	mm	0.05	0.05

Check values for flywheel

Number	Designation		Engine 902.923/924/935, 906.935/955, 926.969 with 443 dia. flywheel and 395 dia. connector


BE03.30-N-1002-03I	Flywheel dia. for mounting starter ring gear (B)	mm	392.435 to 392.575
BE03.30-N-1003-03I	Flywheel dia. at crankshaft flange (C)	mm	114.960 to 115.020
BE03.30-N-1004-03I	Flywheel dia. for mounting clutch (D)	mm	435.000 to 435.063
BE03.30-N-1005-03I	Hole circle dia. for clutch	mm	410
BE03.30-N-1006-03I	Peak-to-valley height (Rz) Clutch friction surface	μm	16
BE03.30-N-1007-03I	Flywheel overall width (F)	mm	64
BE03.30-N-1008-03I	Flywheel - minimum width between friction surface and mounting flange for repairs (E)	mm	55
BE03.30-N-1009-03I	Flywheel - permissible concentricity and lateral trueness deviation	mm	0.05

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