Check air suspension for leaks - AR32.22-P-8000T

MODEL 211.2 except CODE (489) AIRmatic (semi-active air suspension) 

MODEL 211.6 

Fig 1: Locating Air Suspension Pressure Lines

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Identifying Pressure Line Connection, Rear Axle Distributor Unit, Airmatic Compressor Unit And Air Suspensions

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Check
	Notes on air suspension		AH32.22-P-1000-01T
1.1	Fold left rear seat cushion (1) as per front	Model 211.2, see: ↓
		Remove rear seat cushion.*	AR91.12-P-1020TB
2	Remove felt wrapping (2) from pressure line connector (3) and check if pressure lines (4) are inserted up to markings (arrows) in pressure line connector (3).
3	Spray leak detection spray onto pressurized line connection fitting (3)	Wait approx. 10 to 15 minutes after spraying. Minor leakages can be detected as a result (formation of a foam crown). Larger leaks are visible immediately. If pressurized line connection fitting is defective: ↓
		Repair supply line connection for air suspension. Installation:  Attach felt casing (2) again after completing the leak test.	AR32.22-P-2001-01T
4.1	Remove front section of bottom section of soundproofing	Vehicles with diesel engines	AR94.30-P-5300T
4.2	Remove front section of engine compartment paneling	Vehicles with gasoline engines	AR61.20-P-1105T
5	Spray leak detection spray onto pressurized line connection fitting (5) on AIRmatic compressor unit (A9/1)	Wait approx. 10 to 15 minutes after spraying. This allows smaller leaks to be detected (bubbles form). Larger leaks are visible immediately. If pressurized line connection fitting is defective: ↓
		Repair supply line connection for air suspension.	AR32.22-P-2001-01T
6	Spray leak detection spray onto the air spring (6) and the rear axle distributor unit (7)	Wait approx. 10 to 15 minutes after spraying. This allows smaller leaks to be detected (bubbles form). Larger leaks are visible immediately. If pressurized line connection fitting is defective: ↓
		Repair supply line connection for air suspension.	AR32.22-P-2001-01T