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Home >> Mercedes Benz >> 2002 >> C32 >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Rear Axle -- Testing & Repair -- 203 Chassis - 1 Of 2 >> Testing & Repair >> Replace radial sealing ring at drive pinion gear (with rear axle differential installed) - AR35.31-P-0530P

Replace radial sealing ring at drive pinion gear (with rear axle differential installed) - AR35.31-P-0530P

MODEL 203.004 /204 Rear axle differential dia. 185 except CODE (450) Taxi version 

MODEL 203.035 /045 /061 /235 /735 /245 /745 /747 /261 Rear axle differential dia. 185 

MODEL 203.081 /084 /087 /092 /281 /284 /287 /292, 209.341 /342 /343 /361 /441 /442 /461 Rear axle differential dia. 187 

MODEL 209.365 /465 Rear axle differential dia. 198 

MODEL 209.316 /375 /376 /475 /476 Rear axle differential dia. 210 

Rear axle differential 210E 

Fig 1: Identifying Rear Axle Shaft, Twelve-Point Collar Nut And Exhaust System - Rear Axle Differential 210E
G04734751
REMOVINGINSTALLING Remove/install    
DANGER Risk of death  caused 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 All models AH00.00-N-0001-01A
1 Raise vehicle   AR00.60-P-1000P
2 Remove rear wheels. For rear axle differentials dia. 185 mm, dia. 198 mm, dia. 210 mm  
REFER TO MAINTENANCE Remove/install wheels, rotate if necessary   AP40.10-P-4050Z
3 Press back brake pads at fixed calipers of rear axle For rear axle differentials dia. 185 mm, dia. 198 mm, dia. 210 mm
IMPORTANT Ensure clearance of brake discs.
 
4 Drain oil from rear axle differential   AR35.31-P-0520-06I 
    TORQUE SPECIFICATION *BA35.31-P-1002-02B 
    Cleaning spray, Loctite 7063 (150ml) *BR00.45-Z-1046-04A 
    Sealant, Omnifit 100H (50 g) *BR00.45-Z-1061-01A 
REFER TO COMPONENT MODIFICATIONS Oil filler/drain screw on rear axle differential modified Phased in as of 19.01.04 BT35.31-P-0015-01A
5 Remove exhaust system (105) from flange connection Refer to Removing complete exhaust system (105):  
    Model 203 with engine 111 AR49.10-P-7000PR
    Model 203 with engine 112
Model 209 with Engine 112, 113
AR49.10-P-7000PV
    Model 203 with engine 611, 612
Model 209 with engine 612
AR49.10-P-7000PP
    Model 203 with engine 271.940 /946 /948
Model 209 with engines 271.940 /955
AR49.10-P-7000QK
    Model 203, 209 with engine 271.942 AR49.10-P-7000QD
    Model 203 with engine 272 AR49.10-P-7000QB
6 Remove exhaust heat shield (105c)    
7 Remove bolts for propeller shaft intermediate bearing (106a). IMPORTANTInstallation:  Only tighten down the bolts of the propeller shaft center support bearing (106a) when the flex disk is installed on the rear axle differential.  
    TORQUE SPECIFICATION *BA41.40-P-1001-01A 
8 Remove rear propeller shaft assembly (106) from rear axle differential. IMPORTANT The flexible coupling remains on the rear propeller shaft (106). AR41.10-P-0050-03EA
    IMPORTANTInstallation:  Attach rear driveshaft section (106) to final-drive unit. AR41.10-P-0050-04EA
    TORQUE SPECIFICATION *BA41.10-P-1002-01A 
9 Loosen fitting sleeves on flexible couplings.   AR41.10-P-0050-09DA
REFER TO SHOP-MADE TOOLS Drift for loosening fitting sleeves in flex disks.   WF58.50-P-4110-01A
10 Detach rear propeller shaft (106) from front propeller shaft (106c) IMPORTANTInstallation:  Assemble the driveshaft. AR41.10-P-0050-05DA
REFER TO CAPACITIES & SPECIFICATIONS   Long-life grease (NLGI grade 2) BB00.40-P-0266-02A
USA ONLY Measure     
11 Measure and note down total friction torque of drive pinion For rear axle differentials dia. 185 mm, dia. 198 mm, dia. 210 mm AR35.31-P-0530-04P 
    IMPORTANT Move the rear axle shafts (37) to as close to horizontal as possible. If necessary, pretension both rear springs with spring compressor.  
    SPECIAL TOOL Figure
    SPECIAL TOOL Figure
    SPECIAL TOOL Figure
    COMMERCIALLY AVAILABLE TOOLS *WH58.30-Z-1013-06A 
12 Loosen and remove twelve-point collar nut (40) On 185 mm dia., 198 mm dia., 210 mm dia. rear axle differentials:
IMPORTANT Do not remove collar protection when slackening the twelve-point collar nut (40).
 
    SPECIAL TOOL Figure
    SPECIAL TOOL Figure
    IMPORTANTInstallation:  Replace twelve-point collar nut (40) and tighten in stages until the total friction torque measured previously is reached.
TORQUE SPECIFICATION
*BA35.31-P-1001-01A 
    IMPORTANT Observe minimum tightening torque on model 203 with 185 mm dia. rear axle differential, replace elastic spacer sleeve if necessary if torque is not attained: ↓
Disassemble/assemble rear axle differential, adjust gear set.
AR35.31-P-0550C
    IMPORTANTInstallation:  Secure twelve-point collar nut (40) AR35.31-P-0530-01B 
REFER TO SHOP-MADE TOOLS   Chisel for securing collar nut on joint flange WF58.50-P-3531-01A
    On 187 mm dia. rear axle differential:
IMPORTANT Do not remove collar protection when slackening the twelve-point collar nut (40).
 
    SPECIAL TOOL Figure
    SPECIAL TOOL Figure
    IMPORTANTInstallation:  Replace twelve-point collar nut (40).
TORQUE SPECIFICATION
*BA35.31-P-1001-01A 
    IMPORTANTInstallation:  Secure twelve-point collar nut (40). AR35.31-P-0530-01B 
REFER TO SHOP-MADE TOOLS   Chisel for securing collar nut on joint flange WF58.50-P-3531-01A
13 Detach joint flange (41). SPECIAL TOOL Figure
REFER TO COMPONENT MODIFICATIONS Radial sealing ring and joint flange on drive pinion modified As of 15.01.02 with model 203 with rear axle differential dia. 185 mm BT35.31-P-0012-01B
14 Press out radial sealing ring (42) with a suitable tool IMPORTANTInstallation:  Replace radial sealing ring (42) and coat the lip with Universal hypoid gear oil.  
REFER TO CAPACITIES & SPECIFICATIONS   Universal hypoid gear oils (SAE 85 W-90) BB00.40-P-0235-07A
    SPECIAL TOOL Drift for pressing in the previous radial sealing ring version for rear axle differential dia. 185 mm. Figure
    SPECIAL TOOL Drift for pressing in radial sealing ring for rear axle differential dia. 187 mm Figure
REFER TO COMPONENT MODIFICATIONS Radial sealing ring and joint flange on drive pinion modified As of 15.01.02 with model 203 with rear axle differential dia. 185 mm BT35.31-P-0012-01B
    SPECIAL TOOL Drift for pressing in the new radial sealing ring version for rear axle differential dia. 185 mm. Figure
15 Install in the reverse order    
16 If necessary, replace breather of rear axle differential TORQUE SPECIFICATION *BA35.31-P-1003-02B 
17 Check oil level in rear axle differential 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 
    TORQUE SPECIFICATION *BA35.31-P-1001-02B 
    FLUID SPECIFICATION *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 
REFER TO COMPONENT MODIFICATIONS Oil filler/drain screw on rear axle differential modified Phased in as of 19.01.04 BT35.31-P-0015-01A
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL GEAR SET

Number Designation Model 203.035/045/235/245/735/745/747, 203.061/261 up to 08/2002, 203.004/204 except Code 450 manufactured prior to 08/2002 Model 203.006/007/016/064/206/207/216/264/706/707, Model 203.004/204 with code 450 up to 08/2002 Model 209.365/375
BA35.31-P-1001-01A Collar nut, joint flange to drive pinion Nm > 180 > 180 > 180
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL GEAR SET

Number Designation Model 203.008/020/040/042/043/046/052/054/056/081/084/087/092/208/220/240/242/243/246/252/254/256/281/284/287/292/708/730/742/743/740/746/756, Model 203.004/061/204/261 as of 09/2002 Model 209.308/320/341/342/343/354/356//361/420 441/442/454/456/461 Model 209.316/376/465/475/476 210 mm dia rear axle differential
BA35.31-P-1001-01A Collar nut, joint flange to drive pinion Nm 150 150 125
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL HOUSING

Number Designation Model 203.042/043/046/081/084/087/092/242/246/281/284/287/292/740/742/746, Model 203.004/061/204/261 as of 09/2002
BA35.31-P-1001-02B Oil filler screw, rear axle differential Nm 50
BA35.31-P-1002-02B Oil drain screw, rear axle differential Nm 50
BA35.31-P-1003-02B Breather, rear axle differential Nm 25
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL HOUSING

Number Designation Model 203.035/045/235/245/735/745/747, 203.061/261 up to 08/2002, Model 203.004/006/204/ 206/706 up to 08/2002
BA35.31-P-1001-02B Oil filler screw, rear axle differential Nm 50
BA35.31-P-1002-02B Oil drain screw, rear axle differential Nm 50
BA35.31-P-1003-02B Breather, rear axle differential Nm 25
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL HOUSING

Number Designation Model 203.006/007/008/064/206/207/208/264/706/707/708/764, Model 203.004/204 with code 450 up to 08/2002 Model 203.007/207/with code 450
BA35.31-P-1001-02B Oil filler screw, rear axle differential Nm 50
BA35.31-P-1002-02B Oil drain screw, rear axle differential Nm 50
BA35.31-P-1003-02B Breather, rear axle differential Nm 25
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL HOUSING

Number Designation Model 209.316, Model 209.375/376/475/476 up to 23.4.04
BA35.31-P-1001-02B Oil filler screw, rear axle differential Nm 50
BA35.31-P-1002-02B Oil drain screw, rear axle differential Nm 50
BA35.31-P-1003-02B Breather, rear axle differential Nm 30
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL HOUSING

Number Designation Model 209.341/342/343/361/441/442/461 Model 209.365/465
BA35.31-P-1001-02B Oil filler screw, rear axle differential Nm 50 50
BA35.31-P-1002-02B Oil drain screw, rear axle differential Nm 50 50
BA35.31-P-1003-02B Breather, rear axle differential Nm 25 25
TORQUE SPECIFICATION DRIVESHAFT

Number Designation Model 203 Model 209
BA41.10-P-1002-01A Self-locking nut, flexible coupling to rear propeller shaft or rear axle differential. M10 Nm 40 36
M12 Nm 60 58
TORQUE SPECIFICATION PROPELLER SHAFT INTERMEDIATE BEARING

Number Designation Model 203 Model 209
BA41.40-P-1001-01A Bolt, propeller shaft intermediate bearing to frame floor assembly Self-tapping screw Nm - -
Bolt with washer Nm - -
Bolt with collar and self-centering tip Nm 30 30
Bolt with collar and without self-centering tip Nm - -
FLUID SPECIFICATION REAR AXLE DIFFERENTIAL

Number Designation Model 209.341/342/343/361/441/442/461 Model 203.035/045/235/245/735/745/747, Model 203.061/261 up to 08/2002, Model 203.004/204 except code 450 up to 08/2002 Model 203.040/042/043/046/052/081/084/087/092/240/242/243/246/252/281/284/287/292/707/730/740/742/743/746, Model 203.004/061/204/261, as of 09/2002, Model 203.007/207 without taxi version
BF35.31-P-1001-01K Filling capacity Rear axle center assembly Liters 1.0 1.1 1.0
Specifications for Operating Fluids Sheet BB00.40-P-0235-07A BB00.40-P-0235-07A BB00.40-P-0235-07A
FLUID SPECIFICATION REAR AXLE DIFFERENTIAL

Number Designation Model 209.316, Model 209.375/376/475/476 up to 23.4.04 Model 209.308/354/356/365/454/456/465 Model 209.320/420, Model 209.375/376/475/476 as of 24.4.04 Model 209.372/472
BF35.31-P-1001-01K Filling capacity Rear axle center assembly Liters 1,6 1.1 1.2
Specifications for Operating Fluids Sheet BB00.40-P-0235-07A BB00.40-P-0235-07A BB00.40-P-0235-07A
Fig 2: Identifying Pin Wrench (129 589 01 07 00)
G04734752
Fig 3: Identifying Wrench Socket (126 589 02 09 00)
G04734753
Fig 4: Identifying Puller (129 589 01 33 00)
G04734754
Fig 5: Identifying Drift (208 589 00 15 00)
G04734755
Fig 6: Identifying Drift (140 589 14 15 00)
G04734756
Fig 7: Identifying Torque Meter (001 589 49 21 00)
G04734757
Fig 8: Identifying Connecting Piece (100 589 02 59 00)
G04734758
COMMERCIALLY AVAILABLE TOOLS

Number Designation
WH58.30-Z-1013-06A Wrench bit 41 mm hexagon 3/4 inch four-point
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