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Home >> Mercedes Benz >> 2008 >> S450 >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System - 221 Chassis >> Testing & Repair >> Remove/install fuel tank >> Remove/install fuel tank - AR47.10-P-4100SX

Remove/install fuel tank - AR47.10-P-4100SX

MODEL 216 with ENGINE 156, 157, 273, 275, 278 

MODEL 221 with ENGINE 156, 157, 272, 273, 275, 276, 278, 629, 642 

Fig 1: Identifying Fuel Tank Remove/Install Components (1 Of 2)
G10110766Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Fuel Tank Remove/Install Components (2 Of 2)
G10110767Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
DANGER 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
DANGER Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A
1.1 Empty fuel tank (1) over the fuel pump If fuel pump is intact  
Vehicles with diesel engine AR47.10-P-4001SXI 
Vehicles with gasoline engine AR47.10-P-4001SX 
1.2 Empty fuel tank (1) for a defective fuel pump If fuel pump is defective  
MODEL 216 with ENGINE 156, 157, 273, 275, 278
MODEL 221 with ENGINE 156, 157, 272, 273, 275, 276, 278, 629, 642
AR47.10-P-4000SX 
2 Detach rear SAM control unit with fuse and relay module (N10/2) and place into trunk with the lines connected   AR54.21-P-1258SX
3 Detach hose (2) from fuel tank (1) SPECIAL TOOL Hose clamp pliers Fig 3
4 Disconnect electrical connection (3)    
5 Remove center rear seat cushions or continuous rear seat cushions and unscrew nuts (1a) Model 221.0 with code 223, rear bench seat with electrically adjustable outer seats, lumbar support and pneumatically raisable head restraints. Model 221.1 with code 223, rear bench seat with electrically adjustable outer seats, lumbar support and pneumatically raisable head restraints or with code 224, design of individual rear seat system. AR91.12-P-1020SZ
Model 221.0 except code 223, rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints. Model 221.1 except code 224, rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints, code 223 and except design of individual rear seat system. AR91.12-P-1020SY
Model 221.0 with code 223, rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints. Model 221.1 with code 223, rear bench seat with electrically adjustable outer seats with PRE-SAFE positioning function for outer seats and outer head restraints, or with code 224, design of individual rear seat system. AR91.12-P-1020SX
MODEL 221.1 with ENGINE 275, 629
with CODE Z07 (Top protection)
AR91.12-P-1020SXS
Model 216
IMPORTANT For model 221 with code Z07 lift highest protection to loosen the nut (1a) for special protection mat at rear.
AR91.12-P-1020SC
TORQUE SPECIFICATION Nut or bolt, fuel tank to vehicle floor *BA47.10-P-1002-01L 
6.1 Remove underfloor paneling Vehicles without top protection  
      AR61.30-P-1001SX
6.2 Remove center underbody protection plates Model 221.1 with maximum protection, code Z07  
      AR61.40-P-1000SXS
7 Remove complete rear axle   AR35.10-P-0010SX
8 Remove heat shield (4) When replacing fuel tank (1)  
9 Remove fuel hose (5) from fuel tank (1) IMPORTANT Collect escaping fuel.  
10 Detach fuel return hose from fuel tank (1) MODEL 221 with ENGINE 629, 642
IMPORTANT Collect escaping fuel.
 
11 Remove fuel filler flap with filler neck recess   AR88.60-P-2000SX
12 Remove screw/bolts (1b) TORQUE SPECIFICATION Bolt, filler neck to body *BA47.10-P-1003-01L 
13 Remove screw/bolts (1c) TORQUE SPECIFICATION Nut or bolt, fuel tank to vehicle floor *BA47.10-P-1002-01L 
14 Take out fuel tank (1) NOTES
Never handle fuel tank (1) at the filler neck (6) or at the vent line (7).
The fuel tank (1) will be damaged otherwise.
INSTALLATION IMPORTANT The filler neck (6) and vent line (7) cannot be replaced separately!
 
15 Replace fuel tank (1) For a damaged fuel tank (1)
IMPORTANT Dispose of fuel tank (1) appropriately and observe the environmental protection provisions.
 
16 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
17 Check fuel system for leaks with engine running    
FUEL TANK

Number Designation MODEL 216 MODEL 221
BA47.10-P-1003-01L Bolt, filler neck to body Nm 15 15
FUEL TANK

Number Designation MODEL 216 MODEL 221
BA47.10-P-1002-01L Nut or bolt, fuel tank to vehicle floor Nm 15 15
Fig 3: Identifying Hose Clamp Pliers (003 589 03 37 00)
G07300850Courtesy of MERCEDES-BENZ USA