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Check Basic Position Of Camshafts - AR05.20-P-6010MFG

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Engine 139 in model 118, 177, 247 

G16049445Courtesy of MERCEDES-BENZ USA
DANGER Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer. AS00.00-Z-0010-01A
CAUTION 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
Topical note  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVING Remove     
1 Remove position sensor of the exhaust camshaft.   AR07.04-P-0057MFG
2 Remove position sensor of the intake camshaft.   AR07.04-P-0056MFG
3 Remove right front fender liner.   AR88.10-P-1301MFA
INSPECT Check     
4 Turn engine to top dead center position.   AR01.10-P-1000-01MFG
    SPECIAL TOOL Counterholder Fig 1
5 Check basic position of camshafts. IMPORTANT The basic position of the camshafts is checked by a visual inspection over the Hall sensor openings on cylinder head cover (3).
IMPORTANT To check the exhaust camshaft position, the bearing slots (1a) of the pulse wheel (1) must visibly be in the center of the Hall sensor opening. To check the intake camshaft position, the bearing slots (2a) of the pulse wheel (2) must be in the center of the Hall sensor opening.
If the basic position of the camshafts is not correct,
↓
Set basic position of the camshafts.		 AR05.20-P-6020MFG 
INSTALLING Install     
6 Install right front fender liner.   AR88.10-P-1301MFA
7 Install position sensor of the intake camshaft.   AR07.04-P-0056MFG
8 Install position sensor of the exhaust camshaft.   AR07.04-P-0057MFG
Fig 1: Identifying Counterholder (654 589 00 40 00)
G11971953Courtesy of MERCEDES-BENZ USA
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