Remove/install guide bearing in flywheel

AR03.30-W-8401A

23.6.10

ENGINES 904.904 ## up to 106313 in MODEL 670

ENGINES 904.908 /923 ## up to 106313 in MODELS 668, 670

ENGINES 904.9## ## up to 106313 in MODELS 673, 674, 676

ENGINES 904.9## ## up to 106313 in MODELS 375, 970, 972, 975, 976

ENGINES 906.9## ## up to 106163 in MODELS 970, 972, 974, 975, 976

ENGINES 906.9## ## up to 106163 in MODELS 375, 950, 952, 953, 954

W03.30-0021-06

1 Screw

2 Guide bearing

3 Flywheel

4  Cranking device

5  Alignment punch

6  Internal extractor

7  Counter stay

8 Drift

L Shank length

Modification notes

5.2.07	Tightening torque for cap spy hole on the timing case - added.	Operation step 2	*BA01.60-N-1002-01A
	Tightening torque for turning device bolt on timing case - added.	Operation step 2	*BA01.60-N-1003-01A

 	Remove/install
1	Remove clutch	Model 673, 674, 676	AR25.10-W-0050A
		Model 375, 950, 952, 953, 954, 970, 972, 974, 975, 976 Vehicles with a central clutch release bearing	AR25.10-W-0050C
		Model 375, 950, 952, 953, 954 Vehicles without a central clutch release bearing	AR25.10-W-0050J
		Model 668, 670  No removal/installation instructions have been prepared for these models.
2	Remove cap and attach turning device (4)	 Block cranking/blocking device (4) by inserting the pin.	AR03.30-W-1600-03J
			*BA01.60-N-1002-01A
			*BA01.60-N-1003-01A
			*904589046300
3	Remove bolts (1)	 Installation: Lightly oil bolts (1) and tighten.
			*BA03.30-N-1001-01C
			*904589001000
4	Measure shank length (L) of bolts (1)	 If shank length (L) is exceeded: 	*BE03.30-N-1010-03B
		Fit respective new bolt (1).
5	Screw centering drifts (5) into two opposite threaded holes in the crankshaft		*904589026300
6	Remove guide bearing (2)	 Place underlays e.g. copper plates under the supports of the counter stay (7) to prevent damage to the flywheel (3).
		 Installation: Knock in the new guide bearing (2) using a suitable drift (8) flush with the collar of the flywheel (3).
		 Guide bearing with inner dia. 20 mm	*000589263300
		 Guide bearing with inner dia. 25 mm	*000589273300
		 Countersupport	*000589333300
7	Install in the reverse order

Check values for flywheel

Number	Designation			Engine 900.9, 904.9 with a 403 dia. flywheel and a 362 dia. clutch	Engine 900.9, 904.9 with a 443 dia. flywheel and a 362 dia. clutch


BE03.30-N-1010-03B	Flywheel bolts	Thread	M	141 5	141 5
		Length of shank when new	mm	60 0	60 0
		Permissible shank length	mm	61 0	61 0

Check values for flywheel

Number	Designation			Engine 900.9, 902.9, 904.9, 906.9, 924.9 with a 443 mm dia. flywheel and a 395 mm dia. clutch	Engine 902.9, 906.9, 925.9, 926.9 with a 487 mm dia. flywheel and a 430 mm dia. clutch


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

 Timing case

Number	Designation		Engines 900.9, 902.9, 904.9, 906.9


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 904.9, Engine 902.9, 906.9 without code MS8


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

000 589 27 33 00

Counter stay

Internal puller

000 589 26 33 00

000 589 33 33 00

Screwdriver bit

904 589 00 10 00

904 589 02 63 00

904 589 04 63 00

Cranking device

Centering drift