Replace timing chain - AR05.10-P-7601CO

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ENGINE 642 in MODEL 204, 207, 212, 218

Fig 1: Timing Chain Components

Courtesy of MERCEDES-BENZ USA

	Remove
1	Remove glow output stage and place to the side with lines connected	MODEL 204	AR15.20-P-4500CO
		MODEL 207, 212, 218 Do not disconnect ground line.	AR15.20-P-4500SXI
2	Remove the right cylinder head cover	MODEL 204	AR01.20-P-5014CO
		MODEL 207, 212, 218	AR01.20-P-5012SXI
3	Remove left cylinder head cover	MODEL 207 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 212 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 218 with ENGINE 642 with CODE 927 (EU6 emissions standard)
			AR01.20-P-5013SXI
4	Attach hold-down tool (6) to the center bearing points of the camshafts (4, 5)	The hold-down tool (6) assumes the function of the camshaft bearing and relieves the load on the camshaft brackets.
		Hold-down device kit	Figure
5	Set piston on the cylinder 1 to ignition TDC (top dead center)	See "CHECK BASIC POSITION OF CAMSHAFTS".	AR05.20-P-6010OM
6	Remove chain tensioner (2)	MODEL 204	AR05.10-P-7800CO
		MODEL 207, 212, 218	AR05.10-P-7800SXI
7	Disconnect timing chain (1)	MODEL 207, 212, 218 with ENGINE 642 without CODE 927 (EU6 emissions standard)	AR05.10-P-7601-01SXI
		MODEL 207, 212, 218 with ENGINE 642 with CODE 927 (EU6 emissions standard)	AR05.10-P-7601-01LFD
		MODEL 204 with ENGINE 642	AR05.10-P-7601-01CO
	Service Information: Modify chain separating tool and rivet press tool		SI58.20-D-0001SF
		Case	Figure
		Chain separating tool	Figure
		Tie-down set	Figure
		Tie-down set	Figure
		Thrust spindle	Figure
		Pressure pins	Figure
	Install
8	Draw in timing chain (1)	MODEL 204 with ENGINE 642 MODEL 207 with ENGINE 642 without CODE 927 (EU6 emissions standard) MODEL 212 with ENGINE 642 without CODE 927 (EU6 emissions standard) MODEL 218 with ENGINE 642 without CODE 927 (EU6 emissions standard)	AR05.10-P-7601-04CO
		MODEL 207 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 212 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 218 with ENGINE 642 with CODE 927 (EU6 emissions standard) The oil holes of the new timing chain (1) must point outwards.	AR05.10-P-7601-04LFD
		Case	Figure
		Assembly links	Figure
		Tie-down set	Figure
		Tie-down set	Figure
9	Rivet timing chain (1)	MODEL 204 with ENGINE 642 MODEL 207 with ENGINE 642 without CODE 927 (EU6 emissions standard) MODEL 212 with ENGINE 642 without CODE 927 (EU6 emissions standard) MODEL 218 with ENGINE 642 without CODE 927 (EU6 emissions standard)	AR05.10-P-7601-02CO
		MODEL 207 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 212 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 218 with ENGINE 642 with CODE 927 (EU6 emissions standard)	AR05.10-P-7601-02LFD
		Pin for timing chain rivet element (reference value)	*BA05.10-P-1005-01L
		Assembly inserts	Figure
		Riveting tool	Figure
		Case	Figure
		Assembly inserts	Figure
		Thrust piece	Figure
10	Install chain tensioner (2)	MODEL 204	AR05.10-P-7800CO
		MODEL 207, 212, 218	AR05.10-P-7800SXI
11	Remove hold-down tool (6)	Hold-down device kit	Figure
12	Install right cylinder head cover	MODEL 204 with ENGINE 642 MODEL 207 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 212 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 218 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 204	AR01.20-P-5014CO
		MODEL 207, 212, 218	AR01.20-P-5012SXI
13	Install left cylinder head cover	MODEL 207 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 212 with ENGINE 642 with CODE 927 (EU6 emissions standard) MODEL 218 with ENGINE 642 with CODE 927 (EU6 emissions standard)
			AR01.20-P-5013SXI
14	Attach glow output stage	MODEL 204	AR15.20-P-4500CO
		MODEL 207, 212, 218	AR15.20-P-4500SXI