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Home >> Mercedes Benz >> 1996 >> E320 >> Repair and Diagnosis >> Drivelines & Axles >> Wheel Hubs >> Rear Axle -- Testing & Repair -- 210 Chassis - 1 Of 2 >> Testing & Repair >> Check rear axle center assembly oil level, top up if necessary; Oil filler screw and oil drain screw changed on rear axle center assembly - AR35.31-P-0520-03A

Check rear axle center assembly oil level, top up if necessary; Oil filler screw and oil drain screw changed on rear axle center assembly - AR35.31-P-0520-03A

Phased in 19.01.04 

Modification notes

20.3.04 Always replace oil filler screw after unscrewing rear axle center section
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 the oil level check at interior temperature.  
TORQUE SPECIFICATION Rear axle center assembly housing

Number Designation Model 129 Model 140
BA35.31-P-1002-02A Oil filler plug, rear axle center assembly Nm 50 50
TORQUE SPECIFICATION Rear axle center assembly housing

Number Designation Model 170 Model 202
BA35.31-P-1002-02A Oil filler plug, rear axle center assembly Nm 50 50
TORQUE SPECIFICATION Rear axle center assembly housing

Number Designation Model 208 Model 210
BA35.31-P-1002-02A Oil filler plug, rear axle center assembly Nm 50 50
FLUID SPECIFICATION Rear final-drive unit

Number Designation Models 140.02/03 without (code 211) ASD up to 05/94 Models 140.02/03 as of 06/94 Models 140.02/03 with (code 211) ASD up to 05/94
BF35.31-P-1001-01A Filling capacity Rear axle center assembly Liters 1.3 1.1 1.3
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 final-drive unit

Number Designation Models 140.04/06 Models 140.05/07 Model 140.1 without (code 211) ASD
BF35.31-P-1001-01A Filling capacity Rear axle center assembly Liters 1.3 1.4 1.3
Specifications for Operating Fluids Sheet BB00.40-P-0235-00A BB00.40-P-0235-00A BB00.40-P-0235-00A
Sheet BB00.40-P-0235-07A - BB00.40-P-0235-07A
FLUID SPECIFICATION Rear final-drive unit

Number Designation Model 140.1 with (code 211) ASD
BF35.31-P-1001-01A Filling capacity Rear axle center assembly Liters 1.3
Specifications for Operating Fluids Sheet -
Sheet BB00.40-P-0235-07A
FLUID SPECIFICATION Rear final-drive unit

Number Designation Models 129.058/063 without (code 211) ASD up to 05/94 Models 129.058/061/063 with (code 211) ASD up to 05/94 Models 129.058/063 basic version and (code 471) ASR as of 06/94
BF35.31-P-1001-01C Filling capacity Rear axle center assembly Liters 1.3 1.3 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 final-drive unit

Number Designation Models 129.059/064 Model 129.060 without (code 211) ASD Model 129.060 with (code 211) ASD
BF35.31-P-1001-01C Filling capacity Rear axle center assembly Liters 1,1 1,1 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 final-drive unit

Number Designation Model 129.066 Model 129.061 without (code 211) ASD Model 129.067, model 129.076 up to 31.01.98
BF35.31-P-1001-01C Filling capacity Rear axle center assembly Liters 1.3 1.3 1.4
Specifications for Operating Fluids Sheet BB00.40-P-0235-00A 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 final-drive unit

Number Designation Model 129.068, Model 129.076 as of 01.02.98
BF35.31-P-1001-01C Filling capacity Rear axle center assembly Liters 1.6
Specifications for Operating Fluids Sheet BB00.40-P-0235-07A
Sheet -
FLUID SPECIFICATION Rear final-drive unit

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 version
BF35.31-P-1001-01D Filling capacity Rear axle center assembly 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 final-drive unit

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, model 202.134/194 except (code 450) taxi version Models 202.033/093/133/193 Model 202.085 with manual 5-speed transmission, Model 202.134/194 with (code 450) Taxi version
BF35.31-P-1001-01D Filling capacity Rear axle center assembly 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 final-drive unit

Number Designation Models 210.003/004 except code 450 Models 210.010/020/035/037/048/061/062/210/235/237/248/261/262/610 Models 210.006/015/017/025/045/053/055/063/065/08/206/215/217/225/245/263/265/28/606/663, 210.007 with code 450
BF35.31-P-1001-01E Filling capacity Rear axle center assembly 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 final-drive unit

Number Designation Models 210.070/074/270/274 up to 31.01.98, 210.072/272/617 Models 210.003/004 with code 450, 210.007 except code 450 Models 210.070/074/270/274 as of 01.02.98, 210.016/026/216/226/616
BF35.31-P-1001-01E Filling capacity Rear axle center assembly Liters 1.3 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 final-drive unit

Number Designation Model 170.435 Models 170.444/444/445/449 Models 170.465/466
BF35.31-P-1001-01F Filling capacity Rear axle center assembly 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 final-drive unit

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 center assembly 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
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

IMPORTANT Only carry out the oil level check at interior temperature and not on a rear axle center assembly which is at operating temperature. Oil which is otherwise needed might flow out when the rear axle center assembly is hot.

  1. Clean area around oil filler plug (50g).
  2. Unscrew oil filler plug (50g)
  3. If necessary collect which runs out and allow to run out until the oil only drips out of the opening.
  4. Check oil level.

    IMPORTANT The rear axle is correctly filled when the oil reaches the bottom edge of the oil filler hole.

    If necessary refill with hypoid gear oil.

    IMPORTANT The fully synthetic oil can also be used without reservation for rear axle gears manufactured before 04.11.2001. Mixing old Universal hypoid gear oil and the new FE hypoid gear oil does not lead to any impairment of the basic functions such as wear characteristics, leaktightness etc. on the rear axle gear, but should nevertheless be avoided on account of the better fuel economy.

    Shown on dia. 198 mm rear axle center assembly 

    Fig 1: Identifying Oil Filler Plug And Oil Drain Screw
    G04636317Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

    IMPORTANT Replace oil filler screw (50g).

  5. Apply Loctite 7063 cleaning spray to a rag and clean the new oil drain screw (50g) and tapped hole in the rear axle center assembly.

    The oil drain screw (50g) and tapped hole must be free of oil and grease.

  6. Apply about one droplet of Omnifit 100H sealing compound on the second or third lower thread.
  7. Screw oil filler screw (50g)into the rear axle center assembly immediately and tighten SWEDEN ONLY .
    Fig 2: Applying Grease On Second Or Third Lower Thread
    G04636318Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
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