Suspension Strut, Filling

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Special tools and workshop equipment required

Air Suspension Strut Charger: VAS6231
Air Spring Strut Adapter: T10157
Steel gas bottle filled with argon or corgon

Air springs are supplied as replacement parts with a minimum pressure. By sitting in storage for extended periods this pressure can diminish (just like a tire). This minimum pressure must be checked and if necessary restored by >>recharging<< before the air spring is removed from the packaging. If air spring is removed from the packaging without this checking/recharging, this may cause indentations or kinks to form in the dust boot before it reaches its normal shape. These folds can cause damage and premature failure of the air spring.

Regulations and Guidelines

Country-specific laws, regulations, and guidelines apply when handling technical gases.

For example, applicable laws in Germany include:

Technical Regulations for Technical Gases (Pressurized Gases) = TRG
Technical Regulations for Hazardous Substances = TRGS
Technical Regulations for Occupational Safety = TRBS

Procedure

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-- Remove the plug -arrow- from the residual pressure retaining valve.

-- Close the valve of the steel gas bottle.

-- Connect the : VAS6231 and : T10157 .

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Air Spring (in the Packaging)
Steel Gas Bottle for Argon, Corgon with Fitting

>>Refilling<< the air spring may only be performed with the gases from the top to prevent any "uncleaned" air from getting into the air suspension system.

-- Set the flow rate limiter on the fitting to 2.0 L/min -arrow-.

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-- Fill the air spring fill the gas into air spring damper approximately to 5.0 bar (72.51 psi).

-- Disconnect the : VAS6231 from the : T10157 . When doing this, gas will escape at a pressure greater than 3.5 bar (50.76 psi) -arrow-.

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Minimum pressure is now reestablished. The air spring can be removed from the packaging.

-- After installation, first drive the vehicle at high ride height and then at normal ride height.

-- Repeat the procedure.

By moving the vehicle lever heights twice, the majority of the gas is exchanged with filtered and dried air from the air supply motor.

-- Install the air spring. Refer to Installing .