Remove/Install Cylinder Head Cover - AR01.20-P-5014MRI
WARNING: This page is about a different car, the 2023 Mercedes-Benz GLC300, 2022 Mercedes-Benz GLC300, 2021 Mercedes-Benz GLC300, 2020 Mercedes-Benz GLC350e, and 2020 Mercedes-Benz GLC300. However, it is still accessible from the selected car via links, so may be relevant.
Engine 264 in model 205, 253
MODIFICATION NOTES
| 06.05.2021 | Check camshafts and camshaft bearing points in cylinder head cover (1) and the cylinder head for galling and scoring. | Operation steps 19. |
| Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contact with fuel. | No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. Wear protective clothing when handling fuel. |
AS47.00-Z-0001-01A | |
| Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant. | Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. |
AS20.00-Z-0001-01A | |
| 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 | |
| Notes on application of flange sealants to seal major assemblies | AH00.00-P-0500-01MNE | ||
| Remove/install | |||
| 1 | Drain off coolant. | AR20.00-P-1142MRI | |
| 2 | Remove the rail with fuel injectors (Y76/1, Y76/2, Y76/3, Y76/4). | AR07.03-P-1052MRI | |
| 3 | Remove fuel high-pressure pump. | AR07.02-P-1028MRI | |
| 4 | Remove front cap from cylinder head (2). | AR01.30-P-5700MRI | |
| 5 | Remove the engine suspension lug (6) and attach it to the vehicle so that it is free of tension. | *BA01.30-P-1005-01BA | |
| 6 | Remove the ignition coils (T1/1 to T1/4). | AR15.12-P-2003MRI | |
| 7 | Remove bleed line (5) from cylinder head cover (1), unclip from bracket (4) and place to one side. | Engine 264 in model 205 |
Fig 2 |
| 8 | Remove the vacuum pump. | AR43.05-P-1320MRI | |
| 9 | Remove cap (7). | ||
| 10 | Remove the engine oil filler neck from cylinder head cover (1) and place to one side. | AR01.20-P-0022MRI | |
| 11 | Remove bracket (4). | *BA01.20-P-1009-03B | |
| 12 | Loosen screws of cylinder head cover (1) in the order opposite from the tightening procedure and remove. | Bolt tightening procedure for cylinder head cover | AR01.20-P-5014-03MRH |
| Notice | Notes on threaded connections fastened using a tightening angle-based tightening process | AH00.00-P-0020-01A | |
| *BA01.20-P-1001-03B | |||
| 13 | Remove cylinder head cover (1) from cylinder head. | ||
| Notes on application of flange sealants to seal major assemblies | AH00.00-P-0500-01MNE | ||
| Notes on sealant path for cylinder head cover | To detach, do not hammer in a tool between cylinder head cover (1) and cylinder head. Sealing surfaces will otherwise be damaged. |
AH01.30-P-1000-08MM | |
| Sealant, Loctite 5970, 50 ml | *BR00.45-Z-1013-01A | ||
| Fig 3 | |||
| 14 | Remove exhaust camshaft Hall sensor (B6/16). | When replacing the cylinder head cover (1). | AR07.04-P-0057MRI |
| 15 | Remove intake camshaft Hall sensor (B6/15). | When replacing the cylinder head cover (1). | AR07.04-P-0056MRI |
| 16 | Remove slide rail (3). | When replacing the cylinder head cover (1). | AR05.10-P-8421MRI |
| 17 | Unscrew ball head (8). | When replacing the cylinder head cover (1). |
*BA01.20-P-1010-03B |
| Check | |||
| 18 | Check sealing surface on cylinder head cover (1) and cylinder head for damage. | If damage is present: ↓ replace cylinder head cover (1) and cylinder head. |
AR01.30-P-5800MRI |
| 19 | Check camshafts and camshaft bearing points in cylinder head cover (1) and the cylinder head for galling and scoring. | ||
| General information on checking camshafts and bearing points of camshafts | If there are problems, ↓ Replace camshafts and/or cylinder head cover (1) together with cylinder head. |
AH05.20-P-1000-09SZ | |
| Remove/install cylinder head | AR01.30-P-5800MRI | ||
| Remove/install camshafts | AR05.20-P-6992MRI | ||
| Clean | |||
| 20 | Clean sealing surface of the cylinder head cover (1) and cylinder head. | Do not use any sharp-edged tools or abrasive paper. Sealing surfaces will otherwise be damaged. |
AR01.00-P-0050-01A |
| Loctite 7200 | *BR00.45-Z-1038-04A | ||
| Loctite 7063 (400 ml) cleaning spray | *BR00.45-Z-1046-04A | ||
| 21 | Install in the reverse order. | ||
| Check | |||
| 22 | Check and correct engine oil level. | ||
| AP18.00-P-1812MKI | |||
| Risk of burn injuries , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust. | Wear protective clothing and safety glasses. Use the extraction system. Move people out of the danger zone. | AS49.00-Z-0001-01A | |
| 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 | |
| 23 | Perform engine test run. While doing so, check engine for proper operation and leak tightness. |
CRANKCASE VENTILATION SYSTEM, CYLINDER HEAD COVER
| Number | Designation | Engine 264 | ||
|---|---|---|---|---|
| BA01.20-P-1001-03B | Screw/bolt, cylinder head cover to cylinder head | Stage 1 | Nm | 10 |
| Stage 2 | ∠° | 90 | ||
CRANKCASE VENTILATION SYSTEM, CYLINDER HEAD COVER
| Number | Designation | Engine 264 | |
|---|---|---|---|
| BA01.20-P-1009-03B | Screw, right engine cover holder to cylinder head cover | Nm | 20 |
CRANKCASE VENTILATION SYSTEM, CYLINDER HEAD COVER
| Number | Designation | Engine 264 | |
|---|---|---|---|
| BA01.20-P-1010-03B | Ball head, engine cover to cylinder head cover/vacuum pump | Nm | 5 |
CYLINDER HEAD
| Number | Designation | Engine 264 | |
|---|---|---|---|
| BA01.30-P-1005-01BA | Bolt, lifting eye to cylinder head | Nm | 20 |
REPAIR MATERIALS
| Number | Designation | Order number |
|---|---|---|
| BR00.45-Z-1013-01A | Sealant, Loctite 5970, 50 ml | A 003 989 98 20 10 |
| BR00.45-Z-1038-04A | Loctite 7200 | A 010 989 90 71 |
| BR00.45-Z-1046-04A | Loctite 7063 (400 ml) cleaning spray | A 001 986 71 71 09 |