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Home >> Mercedes Benz >> 2008 >> E350 Base >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> Rear Axle -- Testing & Repair -- E350 (211.256) - 3 Of 3 >> Testing & Repair >> Attaching end cover - AR35.31-P-0550-28T

Attaching end cover - AR35.31-P-0550-28T

REAR AXLE CENTER ASSEMBLY HOUSING

Number Designation       Model 211
BA35.31-P-1001-02A Bolt, end cover to rear axle differential Bolt+washer   Nm -
    Flange bolt (TORX, internal serrations) Stage 1 Nm 30
    Stage 2 ∠° 45
REAR AXLE CENTER ASSEMBLY HOUSING

Number Designation       Model 230 except code P99 Model 230 with code P99
BA35.31-P-1001-02A Bolt, end cover to rear axle differential Bolt+washer   Nm - -
    Flange bolt (TORX, internal serrations) Stage 1 Nm 30 30
      Stage 2 ∠° 45  
REAR AXLE CENTER ASSEMBLY HOUSING

Number Designation       Model 171 except Model 171.473
BA35.31-P-1001-02C Bolt, end cover to rear axle differential Bolt+washer   Nm -
    Flange bolt (TORX, internal serrations) Stage 1 Nm 30
      Stage 2 ∠° 45
REAR AXLE CENTER ASSEMBLY HOUSING

Number Designation     Model 219
BA35.31-P-1001-02D Bolt, end cover to rear axle differential Stage 1 Nm 30
    Stage 2 ∠° 45
Fig 1: Identifying Squeeze Gun (112 589 00 25 00)
G07077716Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1013-01A Loctite sealant 5970 A 003 989 98 20
  1. Clean non-machined sealing surface (b) on the new end cover (B) and rear axle center assembly housing.

    IMPORTANT Unmachined sealing surface (b) and sealing surface on rear axle center section housing must be free of oil and grease

    Shown on end cover of rear axle center assembly with ring gear (dia. 185 mm) as an example 

    Fig 2: Identifying Rear Axle Center Assembly Housing Non-Machined Sealing Surface
    G07274582Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  2. Apply Loctite 5970 sealing compound around circumference of sealing surface (arrow).

    IMPORTANT The sealing compound must be applied only to the specified sealing surfaces (arrow) with a bead of 2.0 mm (±0.5 mm).

    The sealant must be applied within 10 minutes!

    The silicone bead should not be spread. Only the approved sealant may be used.

    Shown on end cover of rear axle center assembly with ring gear (dia. 185 mm) as an example 

    Fig 3: Locating Sealing Surface Application Area
    G07078626Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
  3. Position the end cover (54) and fix in position with the aid of flange bolts.

    IMPORTANT Use flange bolts. The end cover (54) must not slip.

  4. Step 1: Fit and tighten remaining flange bolts TORQUE SPECIFICATION .
  5. Mark bolt flanges relative to rear axle differential housing (a).
  6. Place mark (b) on rear axle differential offset by 45°.
  7. Step 2: Tighten flange bolts with 45° swing angle. The markings (a, b) must then match.

IMPORTANT The flange bolts can also be tightened using a commercially available angle gauge.

Fig 4: Locating Mark On Rear Axle Differential
G07274584Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
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