Front Axle Differential Lock Fluid, Draining And Filling

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

Used Oil Collection and Extraction Unit: SMN372500
Flexible Funnel: VAS6675
Commercially available hose (approximately 1.50 m long) outer circumference approximately 15 mm
Commercially Available Funnel
Acid-Resistant Safety Gloves

The vehicle must be level.
The front axle differential lock is in installation position.

CAUTION:

Risk of injury to the eyes and hands by escaping oil.

- Wear protective eyewear.

- Wear acid-resistant safety gloves.

-- Remove the noise insulation. Refer to OVERVIEW - NOISE INSULATION .

-- Place the : SMN372500 under the final drive.

-- Use the : VAS6675 to drain the oil.

-- Position the Funnel so that there is no contact with the oil.

-- Remove the oil drain plug -arrow- from the front axle differential lock.

Fig 1: Identifying Oil Drain Plug

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-- Completely drain the Front Axle Differential Lock Fluid.

Fig 2: Identifying Flexible Funnel VAS 6675

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-- Insert and tighten the new oil drain plug -arrow-.

Fig 3: Identifying Oil Drain Plug

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-- Install the noise insulation. Refer to OVERVIEW - NOISE INSULATION .

Fill with Front Axle Differential Lock Fluid

-- Replace oil filler plug after removing.

The vehicle must be level.

-- Place the : SMN372500 under the front axle differential lock.

Fig 4: Inserting Funnel In Hose

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-- Use a Commercially Available Hose approximately (1.50 m long) with Outer Circumference approximately 15 mm and a Commercially Available Funnel to fill:

-- Route the hose -A- through the engine compartment.

-- Clean the area near the front axle differential lock oil filler plug -arrow-.

Fig 5: Checking Oil Level

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-- Cover neighboring components.

-- Remove the oil filler plug -arrow-.

-- Insert hose -A- in the filler hole -arrow-.

Fig 6: Insert Hose In Filler Hole

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The hose must not sag.

-- Insert the funnel in hose -A-.

Fig 7: Inserting Funnel In Hose

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-- Fill with oil until some starts to escape from between the hose and the oil fill hole.

-- Remove hose. Some extra oil may drain out.

The oil level is correct when it fills up to the lower edge of the oil fill hole.

-- Insert new oil filler plug -arrow- and tighten.

Fig 8: Checking Oil Level

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-- If necessary, clean the area near the front axle differential lock oil filler plug -arrow- and neighboring components.

Tightening Specifications

Refer to OVERVIEW - FRONT AXLE DIFFERENTIAL LOCK COMPONENTS