Set Basic Position Of Camshafts - AR05.20-P-6020MFC

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Engine 260 in model 118, 177, 247

MODIFICATION NOTES

18.08.2022

Use correct bearing brackets (03). Otherwise damage will occur.

Operation step 5.

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Shown on engine 260 without code A14 (CAMTRONIC)

Example illustration

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	Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities.	No parts of the body or limbs should be within the operating area of mechanical components when moving components.	AS00.00-Z-0009-01A
	Risk of injury caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	Risk of injury to skin and eyes due to handling of engine oil. Risk of poisoning caused by swallowing engine oil	Wear protective gloves, protective clothing and safety glasses. Do not fill engine oil into beverage containers.	AS18.00-Z-0001-01A
Notice	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Remove
1	Remove cylinder head cover (6).		AR01.20-P-5014MFC
2	Remove front right fender liner.		AR88.10-P-1301MFA
3	Turn engine at center bolt of crankshaft in direction of engine rotation to top dead center ignition TDC at cylinder 1.	The edge of the section (4a) of the exhaust camshaft (2a) and the bearing slot (5) of the intake camshaft (2e) point upward. For the following operation steps ensure that the crankshaft is not turned.	AR01.10-P-1000-01MT
		Socket wrench bit	Fig 2
4	Remove camshaft positioners (3a, 3e).		AR05.20-P-7204MFC
5	Install hold-down tool (01b).	Use correct bearing brackets (03). Otherwise damage will occur. Screw in screws (04) until the bearing brackets (03) rest flat on the cylinder head (1). Holding device	Fig 1
6	Remove brackets (02a, 02e).	Hold-down tool (01a) remains screwed onto cylinder head (1).
	Adjust
7	Turn exhaust camshaft (2a) and intake camshaft (2e) to basic position.	Turn exhaust camshaft (2a) and intake camshaft (2e) only with socket wrench socket or screw (N 000000 005561) in combination with disk (A 604 990 00 40). Exhaust camshaft (2a) and intake camshaft (2e) will otherwise be damaged. The edge of the section (4a) of the exhaust camshaft (2a) and the bearing slot (5) of the intake camshaft (2e) must point upward vertically. Socket	Fig 3
8	Install brackets (02a, 02e).	Turn exhaust camshaft (2a) and intake camshaft (2e) only with the socket wrench socket or screw (N 000000 005561) in combination with the disk (A 604 990 00 40). Exhaust camshaft (2a) and intake camshaft (2e) will otherwise be damaged. It must be possible to position and install brackets (02a, 02e) without pressure. This will otherwise damage brackets (02a, 02e) and result in incorrect timings. The holding device is not suitable for moving the camshafts (2a, 2e) into position. This will otherwise damage the exhaust camshaft (2a), intake camshaft (2e) and result in incorrect timings. Holding device	Fig 1
		Socket	Fig 3
	Install
9	Install camshaft positioners (3a, 3e) and tighten control valves slightly by hand.	During assembly of the camshaft positioners (3a, 3e) or timing chain, ensure that crankshaft does not turn. The final tightening of the control valves first take place after installation of the chain tensioner. The camshaft positioners (3a, 3e) must still be able to turn freely to the exhaust camshaft (2a) and intake camshaft (2e).	AR05.20-P-7204MFC
10	Install the chain tensioner.		AR05.10-P-7800MFC
11	Tighten control valves of the camshaft positioners (3a, 3e) with final tightening.		AR05.20-P-7204MFC
12	Remove brackets (02a, 02e).	The hold-down tools (01a, 01b) remain on the cylinder head (1). Holding device	Fig 1
13	Release screws (04) from hold-down tools (01a, 01b) until the camshafts (2a, 2e) can be turned.	The hold-down tools (01a, 01b) remain on the cylinder head (1). Holding device	Fig 1
	Check
14	Turn engine at center bolt of crankshaft in direction of engine rotation by two revolutions and position at top dead center (ignition TDC) at cylinder 1.		AR01.10-P-1000-01MT
		Socket wrench bit	Fig 2
15	Screw in screws (04) until the bearing brackets (03) rest flat on the cylinder head (1).
16	Reinstall brackets (02a, 02e) and check basic position of exhaust camshaft (2a) and intake camshaft (2e).	It must be possible to position and install brackets (02a, 02e) without pressure. This will otherwise damage brackets (02a, 02e) and result in incorrect timings. Holding device	Fig 1
		Socket If brackets (02a, 02e) cannot be installed, ↓ Repeat work procedure from operation step 3.	Fig 3
17	Remove brackets (02a, 02e) and hold-down tools (01a, 01b).
18	Install front right fender liner.		AR88.10-P-1301MFA
19	Install cylinder head cover (6).		AR01.20-P-5014MFC

Fig 1: Identifying Holding Device (270 589 01 61 00)

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Fig 2: Identifying Socket Wrench Bit (001 589 65 09 00)

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Fig 3: Identifying Socket (270 589 01 07 00)

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