Check rear axle differential oil level, correct if necessary - AR35.31-P-0520-03CWC

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MODEL 204 (except 204.377), 212 with CODE 700 (Technology Local Content China)

REAR AXLE DIFFERENTIAL HOUSING

Number	Designation		MODEL 204, 212.1 with CODE 700
BA35.31-P-1002-02H	Oil filler screw of rear axle differential	Nm	60

REAR AXLE GEAR

Number	Designation			Model 204 (except 204.077/277/377) with code 700 (Technology Local Content China)	Model 212 (except 212.074/075/076/07 7/092/274/275/276/2 77/292) with code 700 (Technology Local Content China)
BF35.31-P-1002-01T	Filling capacity	Rear axle differential 200 C, Ø 200 mm	Liter	1, 0	1, 0
BF35.31-P-1002-01T	Filling capacity	Specification		Universal hypoid gear oils (specification 235.7). MB 235.7/235.74 FE hypoid gear oil A 001 989 33 03/Mobilube FE/FE Plus 75W-85	Universal hypoid gear oils (specification 235.7). MB 235.7/235.74 FE hypoid gear oil A 001 989 33 03/Mobilube FE/FE Plus 75W-85

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1046-04A	Loctite 7063 cleaning spray (150 ml)	A 001 986 71 71 10
BR00.45-Z-1102-02A	Loctite 272 sealing adhesive	Henkel Loctite

Check temperature of rear axle differential.
Only check and correct oil level in rear axle differential if rear axle differential is at room temperature.

Required oil may run out at a higher temperature, while at a lower temperature overfilling can occur. Both can cause damage to the rear axle differential.

If the rear axle differential is not at room temperature:

↓

Wait until the rear axle differential has cooled down or warmed up to room temperature.

↓

Top up oil to the lower edge of the threaded hole. Model 204 (except 204.077/277/377)

with code 700 (Technology Local Content China)

Model 212 (except 212.074/075/076/077/092/274/275/276/277/292)

with code 700 (Technology Local Content China)

Fig 1: Oil Filler Screw Of Rear Axle Differential
Courtesy of MERCEDES-BENZ USA
Clean area around the filling screw (50g).
Unscrew filling screw (50g) and allow any oil which may escape to drain into a suitable container.
Check oil level in rear axle differential.
The oil must reach the lower edge of the threaded hole.

If the oil does not reach the lower edge of the threaded hole:
Clean filling screw (50g) and threaded hole in rear axle differential with clean, lint-free rag and cleaning spray.
Cleaning spray must not enter the rear axle differential.

Otherwise, the rear axle differential may be damaged.

The filling screw (50g) and threaded hole must be free of oil and dirt.

Otherwise, the threads may be damaged and start to leak.
Apply a drop of sealant to the second lower flank on the filling screw (50g).
Screw filling screw (50g) immediately into rear axle differential and tighten.
Model 204 (except 204.377), 212.1

with code 700 (Technology Local Content China)

Fig 2: Applying Drop Of Sealant To Second Lower Flank On Filling Screw
Courtesy of MERCEDES-BENZ USA