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Home >> Mercedes Benz >> 2003 >> SLK230 Automatic >> Repair and Diagnosis >> Suspension >> Rear Suspension >> Rear Axle -- Testing & Repair -- 170 Chassis - 2 Of 2 >> Testing & Repair >> Replace radial sealing ring at drive pinion gear (with rear axle differential installed) - AR35.31-P-0530D >> Notes

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

Rear axle differential dia. 168 in MODELS 170, 202 

Rear axle differential dia. 185 in MODEL 170, 202, 208 

Rear axle differential dia. 198 in MODEL 170, 202, 203.006 /064, 208 

Rear axle differential dia. 210 in MODEL 203.016, 208 

rear differential assembly 210E 

Rear axle differential dia. 198 in model 203.004 with CODE (450) Taxi version 

Fig 1: Identifying Radial Sealing Ring Remove/Install Components At Drive Pinion Gear
G04713472
MODIFICATION NOTES

20.3.04 Oil filler/drain screw on rear axle differential modified Phased in as of 19.01.04
IMPORTANT The oil filler screws and oil drain screws should always be replaced after being unscrewed.
The new oil filler screws and drain screws as well as the tapped holes must be cleaned with a special cleaning spray and provided with a 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. The new oil drain screw as well as the tapped hole must be cleaned with a special cleaning spray and the oil drain screw must be provided with a special sealing compound Models 170, 202, 208 AR35.31-P-0520-06A 
    Model 203 AR35.31-P-0520-06I
  The oil filler screw should always be replaced after being unscrewed from the rear axle center assembly.
The new oil filler screw as well as the tapped hole must be cleaned with a special cleaning spray and the oil filler screw provided with a special sealing compound		 IMPORTANT Only carry out oil level check at interior temperature.  
    Models 170, 202, 208 AR35.31-P-0520-03A 
    Model 202 AR35.31-P-0520-03I
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 and position the four support plates below 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 Raise vehicle.    
    Model 203 AR00.60-P-1000P
2 Drain oil from rear axle differential Models 170, 202, 208 AR35.31-P-0520-06A 
    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-1003-02A 
    Model 203 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/drain screw on rear axle differential modified Phased in as of 19.01.04 BT35.31-P-0015-01A
3 Remove exhaust system (105) from flange connection Refer to: Removing and installing exhaust system complete: ↓  
    Model 170 with engines 111.943/946/973 AR49.10-P-7000G
    Model series 170 with engines 111.958/983 AR49.10-P-7000GS
    Model 170 with engine 112 AR49.10-P-7000SV
    Model series 202 with series 104, 111 engine AR49.10-P-7000D
    Model 202 with engine 601 ra49006010100x
    Model 202 with engines 604, 605 AR49.10-P-7000I
    Model 202 with engine 611 AR49.10-P-7000HB
    Model 202, 208 with engines 112, 113 AR49.10-P-7000AU
    Model 203 with engine 112 AR49.10-P-7000PV
    Model 203 with engine 611 AR49.10-P-7000PP
    Model 208 with engine 111 AR49.10-P-7000DA
4 Remove exhaust heat shield (105c)    
5.1 Loosen propeller shaft clamping nut (106c) Model 202 up to approx. 10/95  
    SPECIAL TOOL Open-end wrench 46 mm Figure
    SPECIAL TOOL Open-end wrench 41 mm Figure
    TORQUE SPECIFICATION *BA41.10-P-1003-01A 
REFER TO COMPONENT MODIFICATIONS Clamp connection of propeller shaft Model 202:
Converted to flexible connection.		 BT41.10-P-9110-01DA
6 Remove bolts for propeller shaft intermediate bearing (106a). IMPORTANTInstallation:  Only tighten the bolts of the propeller shaft intermediate bearing after attaching the flexible coupling to the rear axle differential.  
    TORQUE SPECIFICATION *BA41.40-P-1001-01A 
7 Remove rear propeller shaft (106) from rear axle differential IMPORTANT Flexible disk remains on propeller shaft.
If the fitted sleeves are jammed: ↓		  
    Loosen fitting sleeves on flexible couplings. AR41.10-P-0050-09DA
REFER TO SHOP-MADE TOOLS   Drift for loosening fitting sleeves in flex disks.
IMPORTANT Push rear propeller shaft forwards out of the centering on the drive pinion and remove towards the rear.		 WF58.50-P-4110-01A
    IMPORTANTInstallation:  Pay attention to existing marking. AR41.10-P-0050-05DA
    TORQUE SPECIFICATION *BA41.10-P-1002-01A 
8.1 Remove cover of fuel pump assembly (140) Vehicles with gasoline engine except model 203  
9 Detach rear axle shafts (37) from the connecting flanges IMPORTANT Move the rear axle shaft into approximately the horizontal position and push together.
Tie rear axle shafts securely to the rear axle carrier.
NOTESInstallation:  Replace self-locking multipoint or hexagon socket bolts and washers.
Lightly oil bolts at thread and bolt head contact surface.		  
    TORQUE SPECIFICATION *BA35.30-P-1002-01A 
MEASURING Measure     
10 Measure and note friction torque Model 170, 202, 208 AR35.31-P-0530-04B 
    SPECIAL TOOL Torque meter Figure
    SPECIAL TOOL Connection piece Figure
    SPECIAL TOOL 27 mm socket for rear axle differential dia. 168 mm Figure
    SPECIAL TOOL 30 mm socket for rear axle differential dia. 185 mm Figure
    COMMERCIALLY AVAILABLE TOOLS Socket wrench bit 41 mm hexagon 3/4 inch square 41 mm for 198 mm dia. rear
axle center assembly and 210 mm dia. rear
axle center assembly in rear axle center
assembly 210E		 *WH58.30-Z-1013-06A 
    Model 203 AR35.31-P-0530-04P
    SPECIAL TOOL Torque meter Figure
    SPECIAL TOOL Connection piece Figure
    COMMERCIALLY AVAILABLE TOOLS Socket wrench bit 41 mm hexagon 3/4 inch square 41 mm for 198 mm dia. rear
axle center assembly and 210 mm dia. rear
axle center assembly in rear axle center
assembly 210E		 *WH58.30-Z-1013-06A 
11 Loosen and remove twelve-point collar nut or hexagon collar nut (40) IMPORTANT Do not remove the collar protection when loosening twelve-point or hexagon collar nut.  
    SPECIAL TOOL Pin wrench Fig 4
    SPECIAL TOOL 27 mm socket for rear axle differential dia. 168 mm Figure
    SPECIAL TOOL 30 mm socket for rear axle differential dia. 185 mm Figure
    COMMERCIALLY AVAILABLE TOOLS 41 mm socket wrench bit for 198 mm dia. rear axle center assembly and 210 mm dia. rear axle center assembly 210E: ↓
IMPORTANT To improve guidance when loosening the hexagon collar nut, press a shop-made bush into the commercially available socket wrench bit.		 *WH58.30-Z-1013-06A 
REFER TO SHOP-MADE TOOLS    
Pressing bush for wrench socket NOTESInstallation:  Replace twelve-point or hexagon collar nut and tighten in stages until the previously measured friction torque is obtained.		 WF58.50-P-3531-02A
    TORQUE SPECIFICATION Observe minimum tightening torque; if necessary if tightening torque is not achieved: ↓ *BA35.31-P-1001-01A 
    IMPORTANT Rear axle center assembly dia. 168 mm, dia. 185 mm, dia. 198 mm: Install new elastic distance sleeve, refer to Disassemble/assemble rear axle center assembly, adjust gear set: ↓
Rear axle differential dia. 168 mm		 AR35.31-P-0550B
    Rear axle differential dia. 185 mm AR35.31-P-0550C 
    Rear axle differential dia. 198 mm AR35.31-P-0550A 
    IMPORTANT Rear axle center assembly dia. 210 mm in rear axle center assembly 210E: If the minimum tightening torque is not obtained, install new rear axle center assembly.
NOTESInstallation:  Secure twelve-point or hexagon collar nut		 AR35.31-P-0530-01B 
REFER TO SHOP-MADE TOOLS   Chisel for securing collar nut on joint flange WF58.50-P-3531-01A
12 Detach joint flange (41). IMPORTANT Use SPECIAL TOOL puller if necessary: ↓  
    SPECIAL TOOL Puller Fig 7
REFER TO COMPONENT MODIFICATIONS Radial sealing ring and joint flange on drive pinion modified As of 01.04.98 on model 170, 202, 208 with 185 mm dia. rear axle center assembly BT35.31-P-0012-01A
REFER TO COMPONENT MODIFICATIONS Radial sealing ring and joint flange on drive pinion modified As of 15.01.02 on model 170, 202, 208 with 185 mm dia. rear axle center assembly BT35.31-P-0012-01B
REFER TO COMPONENT MODIFICATIONS Radial sealing ring and joint flange on drive pinion modified As of 15.01.02 with models 170, 202, 203, 208 with rear axle center assembly dia.
198 mm and with models 203, 208 with rear axle center assembly dia. 210 mm in rear axle center assembly 210E		 BT35.31-P-0012-01C
13 Press out radial sealing ring (42) using a suitable tool IMPORTANT 185 mm dia. rear axle center assembly:
When pressing out ensure that no retaining lug (if present) of the loose pressure plate on the tapered roller bearing is broken off. If necessary, replace and remove lug in rear differential assembly.
IMPORTANTInstallation:  Replace radial sealing ring and coat sealing lip with universal hypoid gear oil: ↓		  
REFER TO CAPACITIES & SPECIFICATIONS   Universal hypoid transmission fluid BB00.40-P-0235-07A
    SPECIAL TOOL Drift for pressing in rear axle center assembly dia. 168 mm Fig 8
    SPECIAL TOOL Drift for pressing in the previous radial sealing ring version for rear axle differential dia. 185 mm. Fig 9
REFER TO COMPONENT MODIFICATIONS Radial sealing ring and joint flange on drive pinion modified As of 01.04.98 on model 170, 202, 208 with 185 mm dia. rear axle center assembly BT35.31-P-0012-01A
REFER TO COMPONENT MODIFICATIONS Radial sealing ring and joint flange on drive pinion modified As of 15.01.02 on model 170, 202, 208 with 185 mm dia. rear axle center assembly BT35.31-P-0012-01B
    SPECIAL TOOL Drift for pressing in the new radial sealing ring version for rear axle differential dia. 185 mm. Fig 13
    SPECIAL TOOL Drift for pressing in the previous radial sealing ring version for 198 mm dia. rear axle center assembly and 210 mm dia. rear axle center assembly in rear axle center assembly 210E Fig 12
REFER TO COMPONENT MODIFICATIONS Radial sealing ring and joint flange on drive pinion modified As of 15.01.02 with models 170, 202, 203, 208 with rear axle center assembly dia. 198 mm and with models 203, 208 with rear axle center assembly dia. 210 mm in rear axle center assembly 210E BT35.31-P-0012-01C
    SPECIAL TOOL Drift for pressing in the new radial sealing ring version for 198 mm dia. rear axle center assembly and 210 mm dia. rear axle center assembly in rear axle center assembly 210E Fig 14
14 Replace breather of rear axle center assembly TORQUE SPECIFICATION Model 170, 202, 208 *BA35.31-P-1005-02A 
    TORQUE SPECIFICATION Model 203 *BA35.31-P-1003-02B 
15 Install in the reverse order    
16 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.  
    Model 170, 202, 208 AR35.31-P-0520-03A 
    FLUID SPECIFICATION Model 170 rear axle differential filling capacity *BF35.31-P-1001-01F 
    FLUID SPECIFICATION Model 202 rear axle center assembly filling capacity *BF35.31-P-1001-01D 
    FLUID SPECIFICATION Model 208 rear axle differential filling capacity *BF35.31-P-1001-01H 
    Cleaning spray, Loctite 7063 (150ml) *BR00.45-Z-1046-04A 
    Sealant, Omnifit 100H (50 g) *BR00.45-Z-1061-01A 
    FLUID SPECIFICATION Oil filler screw for rear axle differential *BA35.31-P-1002-02A 
    Model 203 AR35.31-P-0520-03I
    FLUID SPECIFICATION Filling capacity of rear axle differential *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 differential *BA35.31-P-1001-02B 
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 SHAFT

Number Designation Model 170 Model 202 Model 203
BA35.30-P-1002-01A Self-locking bolt, rear axle shaft to connecting flange (thread and bolt head contact surface oiled) M10 Nm 70 70 70
M12 Nm - - -
TORQUE SPECIFICATION REAR AXLE SHAFT

Number Designation Model 208
BA35.30-P-1002-01A Self-locking bolt, rear axle shaft to connecting flange (thread and bolt head contact surface oiled) M10 Nm 70
M12 Nm -
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL GEAR SET

Number Designation Model 170.435 Models 170.444/445/447/449 Model s170.465/466
BA35.31-P-1001-01A Collar nut, joint flange to drive pinion Nm > 90 > 180 > 180
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL GEAR SET

Number Designation Models series 202.018/078/120/121/122/125/180/182 except Code 450 Models 202.018/078/120/121/122/125/182 with code 450
BA35.31-P-1001-01A Collar nut, joint flange to drive pinion Nm > 90 > 180
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL GEAR SET

Number Designation Models 202.020/022/023/024/025/026/028/029/033/080/081/082/083/086/087/088/089/093/128/133/188/193, 202.085 with automatic 5-speed transmission, 202.134/194 except code 450 Models 202.033/093/133/193, 202.085 with manual 5-speed transmission, 202.134/194 with code 450 Models 203.006/007/016/064/206/207/216/264/706/707, 203.004/204 with code 450 up to 08/2002
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 Models 208.335/344/345/347/348/435/444/445/447/448 Models 208.365/370/465/470 Model 208.374
BA35.31-P-1001-01A Collar nut, joint flange to drive pinion Nm > 180 > 180 > 180
TORQUE SPECIFICATION REAR AXLE CENTER ASSEMBLY HOUSING

Number Designation Model 170 Model 202
BA35.31-P-1002-02A Oil filler screw, rear axle differential Nm 50 50
BA35.31-P-1003-02A Oil drain screw for rear axle differential Nm 50 50
BA35.31-P-1005-02A Breather, rear axle center assembly Nm 25 25
TORQUE SPECIFICATION REAR AXLE CENTER ASSEMBLY HOUSING

Number Designation Model 208
BA35.31-P-1002-02A Oil filler screw, rear axle differential Nm 50
BA35.31-P-1003-02A Oil drain screw for rear axle differential Nm 50
BA35.31-P-1005-02A Breather, rear axle center assembly Nm 25
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL HOUSING

Number Designation Models 203.006/007/008/064/206/207/208/264/706/707/708/764 Models 203.004/204 with code 450 up to 08/2002 Models 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 center assembly Nm 25
TORQUE SPECIFICATION REAR AXLE DIFFERENTIAL HOUSING

Number Designation Models 203.016/216
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 center assembly Nm 25
TORQUE SPECIFICATION DRIVESHAFT

Number Designation Model 170 Model 202 Model 203
BA41.10-P-1002-01A Self-locking nut, flexible coupling to rear propeller shaft or rear axle differential. M10 Nm 40 40 40
M12 Nm 60 60 60
BA41.10-P-1003-01A Clamping nut of propeller shaft Nm - 40 -
TORQUE SPECIFICATION DRIVESHAFT

Number Designation Model 208
BA41.10-P-1002-01A Self-locking nut, flexible coupling to rear propeller shaft or rear axle differential. M10 Nm 40
M12 Nm 60
BA41.10-P-1003-01A Clamping nut of propeller shaft Nm -
TORQUE SPECIFICATION PROPELLER SHAFT INTERMEDIATE BEARING

Number Designation Model 170 Model 202 Model 203
BA41.40-P-1001-01A Bolt driveshaft center bearing to frame Bolt with washer Nm 25 25 -
Bolt with collar and self-centering tip Nm 30 30 30
Bolt with collar and without self-centering tip Nm - - -
TORQUE SPECIFICATION PROPELLER SHAFT INTERMEDIATE BEARING

Number Designation Model 208
BA41.40-P-1001-01A Bolt driveshaft center bearing to frame Bolt with washer Nm 25
Bolt with collar and self-centering tip Nm 30
Bolt with collar and without self-centering tip Nm -
FLUID SPECIFICATION REAR AXLE DIFFERENTIAL

Number Designation Models 202.018/020/022/120/121/125, with (Code 211) ASD Models 202.018/078/120/121/122/125/182 except (code 450) taxi version Model 202.018/120/121/125, without (code 211) ASD Model 202.180 Models 202.018/078/120/121/122/125/182, without (Code 211) ASD, with (Code 450) Taxi equipment
BF35.31-P-1001-01D Filling capacity Rear axle differential Liters 1,1 0.7 1,1
Specifications for Operating Fluids Sheet - BB00.40-P-0235-00A BB00.40-P-0235-00A
Sheet BB00.40-P-0235-07A BB00.40-P-0235-07A BB00.40-P-0235-07A
FLUID SPECIFICATION REAR AXLE DIFFERENTIAL

Number Designation Models 202.020/022/023/024/025/026/028/029/080/081/082/083/086/087/088/089/128/188 without (code 211) ASD, model 202.085 with automatic 5-speed transmission, models 202.134/194 except (code 450) taxi version Models 202.033/093/133/193 model 202.085 with 5-speed manual transmission, model 202.134/194 with (code 450) Taxi version
BF35.31-P-1001-01D Filling capacity Rear axle differential Liters 1,1 1,1
Specifications for Operating Fluids Sheet BB00.40-P-0235-00A -
Sheet BB00.40-P-0235-07A BB00.40-P-0235-07A
FLUID SPECIFICATION REAR AXLE DIFFERENTIAL

Number Designation Model 170.435 Models 170.444/445/447/449 Models 170.465/466
BF35.31-P-1001-01F Filling capacity Rear axle differential Liters 0.7 1,1 1,1
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 Models 208.335/344/345/347/348/435/444/445/447/448 Models 208.365/370/465/470 Models 208.374/474
BF35.31-P-1001-01H Filling capacity Rear axle differential Liters 1,1 1,1 1,6
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 Models 203.006/008/054/056/064/206/208/254/256/264/706/708/756/764 Models 203.004/204 with taxi version code 450, up to 08/2002 Models 203.007/207 with taxi version code 450 Models 203.016/216
BF35.31-P-1001-01K Filling capacity Rear axle differential Liters 1,1 1,6
Specifications for Operating Fluids Sheet BB00.40-P-0235-07A BB00.40-P-0235-07A
Fig 2: Identifying Open End Wrench (126 589 00 01 00)
G04713473
Fig 3: Identifying Open End Wrench (201 589 00 01 00)
G04713474
Fig 4: Identifying Pin Wrench (129 589 01 07 00)
G04713475
Fig 5: Identifying Wrench Socket (201 589 00 09 00)
G04713476
Fig 6: Identifying Wrench Socket (126 589 02 09 00)
G04713477
Fig 7: Identifying Puller (129 589 01 33 00)
G04713478
Fig 8: Identifying Drift (201 589 00 15 00)
G04713479
Fig 9: Identifying Drift (208 589 00 15 00)
G04713480
Fig 10: Identifying Torque Meter (001 589 49 21 00)
G04713481
Fig 11: Identifying Connecting Piece (100 589 02 59 00)
G04713482
Fig 12: Identifying Drift (140 589 08 15 00)
G04713483
Fig 13: Identifying Drift (140 589 14 15 00)
G04713484
Fig 14: Identifying Drift (140 589 13 15 00)
G04713485
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
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