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Home >> Mercedes Benz >> 2001 >> C240 Automatic >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Rear Axle -- Testing & Repair -- 203 Chassis - 1 Of 2 >> Testing & Repair >> Install new radial sealing ring at drive pinion (rear axle center assembly installed) - AR35.31-P-0530PF

Install new radial sealing ring at drive pinion (rear axle center assembly installed) - AR35.31-P-0530PF

TRANSMISSION 722 in MODEL 203.018 /065 /218 /265 /718 rear axle center assembly dia. 210 rear axle center assembly 210E 

Fig 1: Identifying Hexagon Collar Nut, Exhaust System And Rear Propeller Shaft - Dia. 210
G04734759
MODIFICATION NOTES

20.3.04 Oil filler screw and oil drain screw changed on rear axle center assembly Phased in as of 19.01.04
IMPORTANT The oil filler screw and oil drain screw must always be replaced with new screws after removal.
Clean new oil filler and drain screws as well as the tapped holes with a special cleaning agent and apply special sealing compound
BT35.31-P-0015-01A
  The oil drain screw must always be replaced after being unscrewed from the rear axle center assembly.   AR35.31-P-0520-06I 
  The new oil drain screw as well as the tapped hole must be cleaned with a special cleaning spray and a special sealing compound must be applied to the oil drain screw.
Always install new oil filler screw after unscrewing rear axle center section
IMPORTANT Only carry out the oil level check at room temperature. AR35.31-P-0520-03I 
  The new oil filler screw as well as the tapped hole must be cleaned with a special cleaning spray and a special sealing compound must be applied to the oil filler screw.    
REMOVINGINSTALLING Remove/install    
DANGER Risk of death  cased by vehicle slipping or toppling off of the lifting platform. Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer. AS00.00-Z-0010-01A
NOTES Notes on self-locking nuts and bolts   AH00.00-N-0001-01A
1 Remove rear wheels.    
REFER TO MAINTENANCE Remove/install wheels, rotate if necessary   AP40.10-P-4050Z
2 Press back brake pads at fixed calipers of rear axle IMPORTANT Ensure clearance of brake disks.  
3 Drain oil from rear axle center assembly.   AR35.31-P-0520-06I 
    Cleaning spray, Loctite 7063 (150ml) *BR00.45-Z-1046-04A 
    Sealant, Omnifit 100H (50 g) *BR00.45-Z-1061-01A 
    TORQUE SPECIFICATION Oil drain screw *BA35.31-P-1002-02B 
REFER TO COMPONENT MODIFICATIONS Oil filler screw and oil drain screw changed on rear axle center assembly Phased in as of 19.01.04 BT35.31-P-0015-01A
4 Remove exhaust system (105) from flange connection. Engine 112.961 AR49.10-P-7000PV
    Engine 612.990 AR49.10-P-7000PF
5 Remove exhaust shielding plate (105c).    
6 Remove bolts from propeller shaft intermediate bearing (106a). IMPORTANTInstallation:  Tighten bolts of propeller shaft intermediate bearing (106a) only after attaching flexible coupling at rear axle center assembly.  
    TORQUE SPECIFICATION Bolt, propeller shaft intermediate bearing to frame floor *BA41.40-P-1001-01A 
7 Disconnect rear propeller shaft (106) from rear axle center assembly. IMPORTANT Flexible coupling remains on propeller shaft. AR41.10-P-0050-03EF
    IMPORTANTInstallation:  Attach rear propeller shaft (106) to rear axle center assembly. AR41.10-P-0050-04EF
    TORQUE SPECIFICATION Self-locking nut, flexible coupling to rear axle center assembly *BA41.10-P-1002-01A 
8 Loosen fitting sleeves on flexible couplings.   AR41.10-P-0050-09DF
REFER TO SHOP-MADE TOOLS Drift for loosening fitting sleeves in flexible couplings.   WF58.50-P-4110-01A
9 Detach rear propeller shaft (106) from front propeller shaft (106c). IMPORTANTInstallation:  Assemble propeller shaft. AR41.10-P-0050-05DF
REFER TO CAPACITIES & SPECIFICATIONS   Long-life grease (NLGI grade 2) BB00.40-P-0266-02A
MEASURING Measure     
10 Measure and note total friction torque of drive pinion IMPORTANT Move rear axle shafts to approximately horizontal position. If necessary, pre-tension both rear springs with spring compressor. AR35.31-P-0530-04BF 
    SPECIAL TOOL Torque meter Figure
    SPECIAL TOOL Connection piece Figure
    SPECIAL TOOL Socket Figure
11 Slacken and unscrew hexagon collar nut (40). IMPORTANT Do not release collar protection of hexagon collar nut (40) for loosening. AR35.31-P-0550-35CF
    SPECIAL TOOL Pin wrench Figure
    IMPORTANTInstallation:  Install new hexagon collar nut (40) and tighten in stages until the friction torque measured previously is reached.
TORQUE SPECIFICATION Observe minimum tightening torque.
*BA35.31-P-1001-01A 
    IMPORTANT The rear axle center assembly must be replaced if the minimum tightening torque is not achieved.
IMPORTANTInstallation:  Secure hexagon collar nut (40)
AR35.31-P-0530-01BF 
REFER TO SHOP-MADE TOOLS   Chisel for securing hexagon collar nut (40) on joint flange (41). WF58.50-P-3531-01A
12 Detach joint flange (41). IMPORTANT If SPECIAL TOOL necessary use puller. AR35.31-P-0550-06BF
    SPECIAL TOOL Figure
13 Press out radial sealing ring (42). IMPORTANT Use a suitable tool. AR35.31-P-0550-08BF
    IMPORTANTInstallation:  Install new radial sealing ring (42). AR35.31-P-0550-16CF
    SPECIAL TOOL Drift Figure
REFER TO CAPACITIES & SPECIFICATIONS Universal hypoid gear oils (SAE 85 W-90)   BB00.40-P-0235-07A
14 Install in the reverse order    
15 Check rear axle center assembly breather and replace if necessary TORQUE SPECIFICATION Torque specification for screw-on vent valves. *BA35.31-P-1003-02B 
16 Check oil level in rear axle center assembly and correct if necessary IMPORTANT Mixing of old universal hypoid gear oil and the new FE hypoid gear oil should be avoided due to the better fuel economy. AR35.31-P-0520-03I 
    FLUID SPECIFICATION Filling capacity of rear axle center assembly *BF35.31-P-1001-01K 
    Cleaning spray, Loctite 7063 (150ml) *BR00.45-Z-1046-04A 
    Sealant, Omnifit 100H (50 g) *BR00.45-Z-1061-01A 
    TORQUE SPECIFICATION Oil filler screw for rear axle center assembly *BA35.31-P-1001-02B 
REFER TO COMPONENT MODIFICATIONS Oil filler screw and oil drain screw changed on rear axle center assembly Phased in as of 19.01.04 BT35.31-P-0015-01A
TORQUE SPECIFICATION REAR AXLE CENTER ASSEMBLY GEAR SET

Number Designation Model 203.018/065/218/265/718
BA35.31-P-1001-01A Collar nut, joint flange to drive pinion Nm > 115
TORQUE SPECIFICATION REAR AXLE CENTER ASSEMBLY HOUSING

Number Designation Model 203.018/065/218/265/718
BA35.31-P-1001-02B Oil filler screw, rear axle center assembly Nm 50
BA35.31-P-1002-02B Oil drain screw, rear axle center assembly Nm 50
BA35.31-P-1003-02B Breather, rear axle center assembly Nm 25
TORQUE SPECIFICATION PROPELLER SHAFT

Number Designation Model 203
BA41.10-P-1002-01A Self-locking nut, flexible coupling to rear propeller shaft or rear axle center assembly. M10 Nm 40
M12 Nm 60
TORQUE SPECIFICATION PROPELLER SHAFT INTERMEDIATE BEARING

Number Designation Model 203
BA41.40-P-1001-01A Bolt propeller shaft intermediate bearing to frame floor Bolt with washer Nm -
Bolt with collar and self-centering tip Nm 30
Bolt with collar and without self-centering tip Nm -
FLUID SPECIFICATION REAR AXLE CENTER ASSEMBLY

Number Designation Model 203.018/065/218/265/718
BF35.31-P-1001-01K Filling capacity Rear axle center assembly Liters 1.6
Specifications for Operating Fluids Sheet BB00.40-P-0235-07A
Fig 2: Identifying Pin Wrench (129 589 01 07 00)
G04734760
Fig 3: Identifying Socket (126 589 02 09 00)
G04734761
Fig 4: Identifying Puller (129 589 01 33 00)
G04734762
Fig 5: Identifying Drift (208 589 00 15 00)
G04734763
Fig 6: Identifying Connection Piece (100 589 02 59 00)
G04734764
Fig 7: Identifying Torque Meter (001 589 49 21 00)
G04734765
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1061-01A Sealant, Omnifit 100H (50 g) -
BR00.45-Z-1046-04A Cleaning spray, Loctite 7063 (150ml) A 001 986 71 71 10