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Replace full load housing ventilation - AR01.20-P-0002MRA

Model 205 with engine 274.9 except code 494 (US version) 

MODIFICATION NOTES

30.3.15 Remove screw/bolts (5) from bleed valves on coolant line, added. Operation step 6
1.4.15 Unscrew screw/bolt (8) of wide open throttle crankcase ventilation system clamp (1) on front cover, added. Operation step 4
1.4.15 Unclip vent line and vacuum line from wide open throttle crankcase ventilation system (1), added. Operation step 5
1.4.15 Cut open and remove heat-shrinkable tube of connection piece (4), added. Operation step 9
1.4.15 Split and remove connection piece (4) with a suitable tool at predetermined fracture point, added. Operation step 10
28.5.15 Remove lower engine compartment paneling, added. Operation step 8
Fig 1: Identifying Throttle Crankcase Ventilation System, Heating Element And Bolts
G10132343Courtesy of MERCEDES-BENZ USA

Shown on engine 274.9 in model 205 (except 205.047/147/247) 

REMOVINGINSTALLING Remove/install     
1 Remove upper engine cover    
2 Remove engine air intake duct upstream of air filter    
3 Disconnect wide open throttle crankcase ventilation system (1) from wide open throttle crankcase ventilation system heating element (2)    
4 Unscrew screw/bolt (8) of wide open throttle crankcase ventilation system clamp (1) on front cover    
5 Unclip vent line and vacuum line from wide open throttle crankcase ventilation system (1)    
6 Remove screw/bolts (5) from bleed valves on coolant line    
7 Detach partial load purge line (6) and vent line (7) from bleed valve    
8 Remove lower engine compartment paneling   AR61.20-P-1105LW
9 Cut open and remove heat-shrinkable tube of connection piece (4)    
10 Split and remove connection piece (4) with a suitable tool at predetermined fracture point    
11 Detach wide open throttle crankcase ventilation system (1) at oil separator (3) and remove upwards INSTALLATION IMPORTANT Replace connection piece (4) and sealing rings.  
12 Install in the reverse order    
INSPECT Check     
DANGER 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
13 Carry out an engine test run, checking the engine for proper operation and leaktightness