Remove/install a flywheel

AR03.30-W-8002R

30.6.10

ENGINES 926.9 in MODEL 949 with TRANSMISSION 715.5

W03.30-1061-06

1 Timing case

2 Electrical line

3 Flywheel

4 Bolts

5  Alignment punch

B15 Crankshaft position sensor

L Shank length

	Removing
1	Remove clutch		AR25.10-W-0050R
2	Attach cranking/blocking device for engine		AR03.30-W-1600-03R
			*BA01.60-N-1003-01A
			*904589046300
3	Detach electrical line (2) from timing case (1)
4	Disconnect electrical connector from crankshaft position sensor (B15)
5	Pull camshaft position sensor (B15) out of timing case (1)
6	Remove two opposing bolts (4)	 Block cranking/turning device, if required, by inserting the pin.
			*904589001000
7	Screw centering drift (5) into threaded hole		*904589026300
8	Unscrew remaining bolts (4)		*904589001000
9	Remove flywheel (3) over the centering drifts (5)	 If flywheel (3) is jammed, screw two bolts (M1080) into opposing threaded holes in flywheel (3) and pull out flywheel (3).
	Checking
10	Check clutch surface for scorch marks, scoring and cracks on flywheel (3)	 if necessary: 
		Rework flywheel (3)	AR03.30-W-8022R
		or replace flywheel (3).
11	Visually check rear radial shaft sealing ring	 if necessary: 
		Replace radial shaft sealing ring.	AR03.20-W-3063R
12	Check flange on flywheel (3) for scoring caused by radial shaft sealing ring	 Replace flywheel (3), if necessary.
13	Inspect ring gear for wear	 if necessary: 
		Replace ring gear of flywheel (3).	AR03.30-W-8312R
		or replace flywheel (3).
14	Check locating bearing in flywheel (3)	 if necessary: 
		Replace locating bearing in flywheel (3).	AR03.30-W-8401R
15	Measure shank length (L) of bolts (4)	 If permissible shank length (L) is exceeded, replace bolt (4) concerned.	*BE03.30-N-1010-03B
	Install
16	Install flywheel (3) over the centering drifts (5)	 Observe installation position of dowel pin in the crankshaft. Remove both bolts (M1080) if necessary.
17	Coat bolts (4) with engine oil and screw in	 Do not tighten bolts (4) yet.
18	Remove centering drift (5)
19	Tighten the remaining two bolts (4) with engine oil and screw in; tighten all bolts (4)		*BA03.30-N-1001-01C
			*904589001000
20	Take off cranking/blocking device for engine		AR03.30-W-1600-03R
			*BA01.60-N-1002-01A
			*BR00.45-Z-1013-01A
21	Clean flange on crankshaft position sensor (B15) and coat with grease		*BR00.45-Z-1013-01A
22	Press plug bushing and crankshaft position sensor in (B15) against stop	 Check plug bushing, replace if required.
23	Reattach electrical connector on crankshaft position sensor (B15)
24	Fasten electrical line (2) on timing case (1)
25	Install clutch		AR25.10-W-0050R

Check values for flywheel

Number	Designation			Engine 925.9, 926.9 with flywheel Ø 443 and clutch Ø 395


BE03.30-N-1010-03B	Flywheel bolts	Thread	M	141.5
		Length of shank when new	mm	60.0
		Permissible shank length	mm	61.0

 Timing case

Number	Designation		Engine 924.9, 925.9, 926.9


BA01.60-N-1002-01A	Inspection hole closure cover to timing case	Nm	25
BA01.60-N-1003-01A	Bolt, turning device to timing case	Nm	25

 Flywheel, driven plate, vibration damper, starter ring gear

Number	Designation				Engine 924.9, 925.9 926.9


BA03.30-N-1001-01C	Bolt, flywheel to crankshaft	M14	Stage 1	Nm	50
			Stage 2	Nm	125
			Stage 3	°	90

904 589 02 63 00

Cranking device

Centering drift

Screwdriver bit

904 589 00 10 00

904 589 04 63 00

Repair materials

Number	Designation	Order number
BR00.45-Z-1013-01A	Loctite sealant 5970	A 003 989 98 20

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