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Remove/install bulkhead - AR61.25-P-6600EW

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MODEL 212 with ENGINE 274 

MODEL 212 with ENGINE 276.8 

MODEL 212.095/195 with ENGINE 276.9 

Shown on engine 276.9 

Fig 1: Bulkhead Remove/Install Components - Shown On Engine 276.9
G09977104Courtesy of MERCEDES-BENZ USA

Shown with engine 276.9 removed 

Fig 2: Bulkhead Remove/Install Components - Shown With Engine 276.9 Removed
G09977105Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 274 

Fig 3: Bulkhead Remove/Install Components - Shown On Engine 274
G09977106Courtesy of MERCEDES-BENZ USA

Shown on engine 276.8 

Fig 4: Bulkhead Remove/Install Components - Shown On Engine 276.8
G09977107Courtesy of MERCEDES-BENZ USA

Shown with engine removed 

Fig 5: Bulkhead Remove/Install Components - Shown With Engine Removed
G09977108Courtesy of MERCEDES-BENZ USA

Shown on removed engine 274.9 with CODE 924 (Equipment for natural gas operation) 

Fig 6: Bulkhead Remove/Install Components - Shown On Engine 274.9 With Code 924
G09977109NOTESREMOVINGINSTALLINGINSTALLATION IMPORTANTIMPORTANTIMPORTANTCourtesy of MERCEDES-BENZ USA
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Open engine hood and raise to vertical position   AR88.40-P-1000EW
2 Drain coolant ENGINE 276 AR20.00-P-1142EL
ENGINE 274 AR20.00-P-1142MR
3 Disconnect battery ground line   AR54.10-P-0003EW
4 Remove edge stripping (2) from bulkhead (1)    
5 Disconnect electrical lines (3) from fuse box (F32)   AR54.15-P-1330EW
6 Pull cable duct (4) with bracket (7) upward out of bulkhead (1) and lay down to side    
7.1 Unclip vacuum line (5) at front ENGINE 276.8  
7.2 Disconnect vacuum line (5) from rear separating point ENGINE 276.9  
7.3 Disconnect vacuum line (5) from cable duct (4) ENGINE 274  
8 Disconnect electrical connection from electrical wiring harness (9) on engine    
9 Unhook bracket (22) from bulkhead (1) ENGINE 276  
10.1 Pull vacuum line (5) and electrical wiring harness (9) with cable duct (10) upward out of bulkhead (1) and lay down to side ENGINE 276  
10.2 Pull electrical wiring harness (9) with cable duct (10) upward out of bulkhead (1) and lay down to side ENGINE 274  
11 Disconnect electrical wiring harness (23) from pressure control unit (Y107/2) MODEL 212 with ENGINE 274.9
with CODE 924 (Provision for natural gas operation)
AR07.17-P-0001MRC
12 Unclip electrical wiring harness (23) from bracket (24) MODEL 212 with ENGINE 274.9
with CODE 924 (Provision for natural gas operation)
 
13 Pull electrical wiring harness (23) with cable duct (25) upward out of bulkhead (1) and lay down to side    
14 Disconnect coolant hose (11) from coolant hose separating point (12) and lay down to side INSTALLATION IMPORTANT Check seal on coolant hose (11) for damage, replace if necessary.  
15 Release catch hook (arrows) on coolant hose separating point (12) and press coolant hose separating point (12) out of bulkhead (1) toward rear    
16 Remove bolt (13) IMPORTANT Lift insulation mat (14) in area of bolt (13).  
17 Unscrew bolts (19, 20)    
18 Unscrew nuts (21)    
19 Detach right heat shield (15) and left heat shield (16) from threaded pin on clip-on nuts (21)    
20 Release nuts (17, 18) IMPORTANT It is not necessary to unscrew the nuts (17, 18) completely.  
21 Remove bulkhead (1) upward    
22 Transfer insulation mat (14) When replacing bulkhead (1).  
23 Install in the reverse order