Gear Oil Level, Checking, Transfer Case, Transmission With Separated Oil System
Special tools and workshop equipment required
- Used Oil Collection and Extraction Unit:SMN372500
- Pressurized Gearbox Oil Filler Kit:VAS6617
- Pressurized Gearbox Oil Filler Kit:VAS6617/2
- Pressurized Gearbox Oil Filler Kit - Adapter 6:VAS6617/6
Requirements:
- General repair instructions. Refer to GENERAL REPAIR INFORMATION .
- Guidelines for clean working conditions. Refer to GUIDELINES FOR CLEAN WORKING CONDITIONS .
- Replace the plug for the inspection and fill hole.
- Gear oil temperature: approximately 20 °C (68 °F) (room temperature).
- Move the vehicle onto a 4-column workshop hoist or over a work pit so it is completely level.
- Transmission is in "P".
- The parking brake button is pressed to activate the electro-mechanical parking brake.
- The transmission must be still for at least 15 minutes to make sure the oil settles internally.
Procedure
-- Place the :SMN372500 under the transmission.
-- To catch escaping gear oil place multiple cloths around the tunnel crossmember.
Risk of Injury to the Eyes by Escaping Oil
- Wear protective eyewear.
-- Remove the drain plug -arrow A- from the center differential housing.
- Specified value: The oil level is correct when the transfer case is filled to the lower edge of the filler opening.
-- Let any excess oil drain.
If the Level in the Transfer Case Does Not Reach the Lower Edge of the Oil Fill Hole:
-- Install the :VAS6617/6 with the :VAS6617/2 in the inspection and fill hole in the transfer case hand-tight.
-- Connect the :VAS6617 and fill the transfer case with gear oil.
- Transmission fluid. Refer to the appropriate Parts Information.
-- Wait five minutes.
Tip:
- The inside of the transfer case is divided into several oil chambers. The chambers must be filled equally.
- A waiting time of at least 5 minutes is required so that the internal oil level between the center differential and oil fill space can equalize.
-- Remove the :VAS6617/6 from the transmission and let any extra gear oil drain out.
-- Tighten the new drain plug -arrow A- for the center differential housing.
-- Remove the cloth from the tunnel crossmember.
Tightening Specifications
- Drain and plug. Refer to COMPONENT LOCATION OVERVIEW - DRAIN AND CHECK PLUGS .