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Home >> Mercedes Benz >> 2023 >> GLA250 Base >> Repair and Diagnosis >> Engine Mechanical >> Timing Belt >> Engine Timing -- 247 Chassis >> Testing & Repair >> Remove/Install Exhaust Camshaft Lift Solenoids - AR05.20-P-6558MFG

Remove/Install Exhaust Camshaft Lift Solenoids - AR05.20-P-6558MFG

Engine 139 in model 118, 177, 247 

Fig 1: Exhaust Camshaft Lift Solenoids Components Location - Engine 139 In Model 247 (Shown On Model 177)
G16049460Courtesy of MERCEDES-BENZ USA

Shown on model 177 

WARNING 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
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
Topical note  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Remove upper engine cover.    
REFER TO MAINTENANCE   INSTALLATION IMPORTANT Only install upper engine cover after the leak test. AP01.10-P-2405-01K
2 Remove screws (2). TORQUE SPECIFICATION Screw/nut, bracket to cylinder head/bracket *BA09.40-P-1010-01X 
3 Unscrew nut (3) and remove support (4). TORQUE SPECIFICATION Screw/nut, bracket to cylinder head/bracket *BA09.40-P-1010-01X 
4 Remove screw/bolt (1). TORQUE SPECIFICATION M6x1 *BA00.10-P-1002-04A 
5 Remove bolts (5). TORQUE SPECIFICATION M6x1 *BA00.10-P-1002-04A 
6 Lift heat shield (6) and unclip electric line (7) from the heat shield (6).    
7 Remove heat shield (6).    
8.1 Release and disconnect electrical connector (8). When removing the outlet CAMTRONIC actuator for cylinders 3 and 4 (Y49/23).  
8.2 Release and disconnect electrical connection (9). When removing the outlet CAMTRONIC actuator for cylinders 1 and 2 (Y49/22).  
9.1 Remove screws (10). When removing the outlet CAMTRONIC actuator for cylinders 3 and 4 (Y49/23).
TORQUE SPECIFICATION Bolt, valve lift switch actuator to cylinder head cover
*BA05.20-P-1004-02K 
9.2 Remove screws (11). When removing the outlet CAMTRONIC actuator for cylinders 1 and 2 (Y49/22).
TORQUE SPECIFICATION Bolt, valve lift switch actuator to cylinder head cover
*BA05.20-P-1004-02K 
10 Remove outlet CAMTRONIC actuator for cylinders 3 and 4 (Y49/23) and outlet CAMTRONIC actuator for cylinders 1 and 2 (Y49/22).    
11 Seal openings with suitable stop plug. SPECIAL TOOL Record plug Fig 2
12 Check that pins of the outlet CAMTRONIC actuator for cylinders 3 and 4 (Y49/23) and the outlet CAMTRONIC actuator for cylinders 1 and 2 (Y49/22) are retracted. NOTES Do not pull out the pins of the outlet CAMTRONIC actuator for cylinders 3 and 4 (Y49/23) or the outlet CAMTRONIC actuator for cylinders 1 and 2 (Y49/22). Otherwise this will cause damage.
If problems exist,

Install new outlet CAMTRONIC actuator for cylinders 3 and 4 (Y49/23) and outlet CAMTRONIC actuator for cylinders 1 and 2 (Y49/22).
 
13 Install in the reverse order.    
14 Read out and erase fault memory.    
DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06MFA
INSPECT Check     
WARNING Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running. Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
15 Perform engine test run. While doing so, check engine for proper operation and leak tightness.    
16 Install upper engine cover.    
REFER TO MAINTENANCE     AP01.10-P-2405-01K
METRIC SCREWS/BOLTS AND NUTS AS PER MBN 10 105, 10 143

Number Designation 8.8 10.9
BA00.10-P-1002-04A M6x1 Nm 9 13
CAMSHAFT, CAMSHAFT ADJUSTMENT

Number Designation Engine 139
BA05.20-P-1004-02K Bolt, valve lift switch actuator to cylinder head cover Nm 8
TURBOCHARGER

Number Designation Engine 139
BA09.40-P-1010-01X Screw/nut, bracket to cylinder head/bracket Stage 1 Nm 21
Stage 2 ∠° -
Fig 2: Identifying Record Plug (129 589 00 91 00)
G09975019Courtesy of MERCEDES-BENZ USA