Remove/Install Charge Air Distributor - AR09.41-P-8683MRA
Engine 274.9 in model 205
Engine 274.9 in model 253
MODIFICATION NOTES
| 30.01.2020 | Water-cooled charge air cooler bracket screw at cylinder head cover/cylinder head/chain case cover | BA09.41-P-1003-01U |
Shown on Engine 274.9 in model 205.042
Fig 1: Charge Air Distributor Components Location - Engine 274.9 In Model 253 (Shown In Model 205.042)
Shown on Engine 274.9 in model 205.042
| 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 pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. |
AS20.00-Z-0001-01A | |
| Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | ||
| Remove/install | |||
| 1 | Remove upper Engine cover | ||
| 2 | Remove pressure in the low-temperature circuit | ||
| 3 | Remove vent line from charge air cooler and close off with suitable stop plugs | Fig 2 | |
| Fig 3 | |||
| 4 | Remove the charge air cooler and place with attached lines and hose to one side | AR09.41-P-6819MRA | |
| 5 | Remove Engine management control unit with bracket | AR07.08-P-7008MRA | |
| 6 | Remove the holder of the charge air cooler | *BA09.41-P-1003-01U | |
| 7 | Release and disconnect electrical connection at pressure sensor downstream of throttle valve (B28/7) | ||
| 8 | Release and disconnect electrical connection on charge air temperature sensor downstream of throttle valve (B17/9) | ||
| 9 | Release and disconnect throttle valve actuator electrical connection (M16/6) | ||
| 10 | Unclip subharness from throttle valve actuator (M16/6) and charge air distributor (3) | ||
| 11 | Release and disconnect electrical connection at partial load operation crankcase ventilation system valve (Y58/2) | ||
| 12 | Unclip partial load operation crankcase ventilation system valve (Y58/2) from charge air distributor (3) | ||
| 13 | Remove oil measuring rod tube from charge air distributor (3) | AR18.40-P-3510MRA | |
| 14 | Remove EGR line from charge air distributor (3) | Engine 274.9 in model 205 with code 920 (Direct fuel injection with stratified charging) |
|
| Fig 4 | |||
| 15 | Remove vacuum hoses from charge air distributor (3) | Fig 2 | |
| 16 | Remove screw/bolts (2) and take out charge air distributor (3) | Tightening procedure for charge air manifold |
AR09.41-P-1312-01MR |
| *BA09.20-P-1001-01U | |||
| 17 | Remove throttle valve actuator (M16/6) from charge air distributor (3) | When replacing charge-air distributor (3). | |
| AR07.61-P-1401MRA | |||
| 18 | Install in the reverse order | ||
| 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 | |
| 19 | Carry out Engine test run and check Engine for proper leaktightness and function | ||
| 20 | Install upper Engine cover |
INTAKE MANIFOLD
| Number | Designation | Engine 274 | |
|---|---|---|---|
| BA09.20-P-1001-01U | Screw/bolt, charge air distributor to cylinder head | Nm | 14 |
CHARGE AIR PIPE/CHARGE AIR COOLING
| Number | Designation | Engine 274 | |
|---|---|---|---|
| BA09.41-P-1003-01U | Screw, water-cooled charge air cooler holder to cylinder head cover/cylinder head/chain case cover | Nm | 8 |