BMW X3 (F25) Service & Repair Manual: Transfer case, general

• Change transfer box oil (atc 45l)
• Danger of poisoning if oil is ingested/absorbed through the skin
• Replenishing/changing transfer box oil (atc 450)
• Risk of injury if oil comes into contact with eyes and skin
• Safety instructions for handling oil
• Topping up transfer box oil (atc 45l)

Change transfer box oil (atc 45l)

Special tools required:

• 00 2 080

IMPORTANT: Use only the approved TRANSMISSION OIL in the transfer box.

Failure to comply with this requirement will result in serious Information damage to the transfer box!

NOTE: Only change oil when transfer box is at normal operating temperature.

Necessary preliminary task:

• Remove transmission cross-member .

Undo oil filler plug (1).

Installation note: Renew oil filler plug with O-ring.

Place oil collecting apparatus underneath.

Use special tool 00 2 080 to draw off and dispose of transmission oil.

• Drawn off oil volume ≥ 500 ml.
• Observe country-specific waste disposal regulations

Use special tool 00 2 080 to top the transmission oil up to the lower edge of the filler screw opening.

Danger of poisoning if oil is ingested/absorbed through the skin

Danger of poisoning! Ingesting oil or absorbing through the skin may cause poisoning!

Possible symptoms are:

• Headaches
• Dizziness
• Stomach aches
• Vomiting
• Diarrhoea
• Cramps/fits
• Unconsciousness

Protective measures/rules of conduct:

• Pour oil only into appropriately marked containers
• Do not pour oil into drinking vessels (drinks bottles, glasses, cups or mugs)
• Observe country-specific safety regulations

First aid measures:

• Do not induce vomiting.

  If the person affected is still conscious, he/she must rinse out their mouth with water, drink plenty of water and consult a doctor immediately.

  If the person affected is unconscious, do not administer anything by mouth, place the person in the recovery position and seek immediate medical attention.

Replenishing/changing transfer box oil (atc 450)

IMPORTANT: Use only the approved TRANSMISSION OIL in the transfer box.

Failure to comply with this requirement will result in serious damage to the transfer box!

NOTE: Only change oil when transfer box is at normal operating temperature.

Necessary preliminary tasks:

• Remove TRANSMISSION CROSS MEMBER .

Check transfer case oil level, correct:

Undo oil filler plug (1).

Check transfer box oil level.

If necessary, pour in transmission oil up to lower edge of opening for oil filler plug (1).

Installation note: Replace oil filler plug (1).

Changing transfer case oil:

Place oil collecting apparatus underneath.

Remove oil drain plug (1).

Drain and dispose of transmission oil.

NOTE: Observe country-specific waste disposal regulations

Installation note: Replace oil drain plug (1).

Undo oil filler plug (1).

Pour in transmission oil up to lower edge of opening for oil filler plug (1).

Installation note: Replace oil filler plug (1).

Risk of injury if oil comes into contact with eyes and skin

Danger of injury! Contact with eyes or skin may result in injury!

Possible symptoms are:

• Impaired sight
• Irritation of the eyes
• Reddening of the skin
• Rough and cracked skin

Protective measures/rules of conduct:

• Wear safety goggles
• Wear oil-resistant protective gloves
• Observe country-specific safety regulations

First aid measures:

• Eye contact: Rinse eyes immediately with plenty of water for at least 15 minutes; if available, use an eye-rinsing bottle. If irritation of the eyes persists, consult a doctor.
• Skin contact: Wash off with soap and water immediately. If irritation persists, consult a doctor.

NOTE: Do not use solvents/thinners.

Safety instructions for handling oil

WARNING: DANGER OF POISONING if oil is ingested/absorbed through the skin! RISK OF INJURY if oil comes into contact with eyes and skin!

Recycling: Observe country-specific waste disposal regulations.

Measures if oil is unintentionally released:

• Personal precautionary measures: Danger of slipping! Keep noninvolved persons away from the work area. Wear personal protective clothing/equipment.
• Environmental protection measures: Prevent oil from draining into drain channels, sewerage systems, pits, cellars, water and the ground.
• Limiting spread: Use oil blocks to prevent the surface spread of oil.
• Cleaning procedure: Bind and dispose of escaped oil with nonflammable absorbents.

NOTE: Do not flush oil away with water or aqueous cleaning agents.

Topping up transfer box oil (atc 45l)

IMPORTANT: Use only the approved TRANSMISSION OIL in the transfer box.

Failure to comply with this requirement will result in serious damage to the transfer box!

NOTE: Only change oil when transfer box is at normal operating temperature.

Necessary preliminary tasks:

• Remove cross member .

Check transfer box oil level, correct:

Undo oil filler plug (1).

Check transfer case oil level.

If necessary pour in transmission oil up to the lower edge of the oil filler plug opening (1).

Installation note: Replace oil filler plug (1).