Check/correct fluid level of hydraulic unit - AR77.37-P-3501RK

MODEL 231 

Fig 1: Checking Correct Fluid Level Of Hydraulic Unit

Courtesy of MERCEDES-BENZ USA

	Risk of injury  to skin or eyes from hydraulic fluid spraying out under pressure. Risk of poisoning  from swallowing hydraulic fluid.	Depressurize hydraulic system completely before starting any work on it. Wear protective clothing and safety glasses.	AS00.00-Z-0013-01A
	Check
1	Open and close Vario roof with Vario roof actuation switch (S84s1)	The hydraulic system can be bled by opening and closing. Keep Vario roof completely closed after bleeding.
2	Open trunk lid
3	Unhook trunk partition
4	Remove luggage compartment paneling
5	Remove spare tire well panel
6	Check oil level in oil reservoir (1) of Vario roof control hydraulic unit (A7/5)	The oil level must be within the oil level range (a) when the Vario roof is closed.
7	Remove Vario roof control hydraulic unit (A7/5)	If oil level is incorrect. Remove only until filling screw (2) is accessible so that hydraulic oil can be added. Do not disconnect electrical and hydraulic lines.	AR77.37-P-3500RK
8	Correct oil level in oil reservoir (1) of Vario roof control hydraulic unit (A7/5)	If oil level is incorrect.
			AR77.37-P-3501-01RK
	Hydraulic fluids (Specification 346.0)		MB 346.0 hydraulic fluid A 000 989 02 06
		Filling screw to hydraulic unit	*BA77.37-P-1005-01A
9	Install Vario roof control hydraulic unit (A7/5)	If oil level is incorrect.	AR77.37-P-3500RK
10	Install panel for spare wheel well
11	Install trunk floor trim panel
12	Hook trunk partition into place
13	Close trunk lid

SOFT TOP HYDRAULIC SYSTEM

Number	Designation		MODEL 231
BA77.37-P-1005-01A	Filling screw to hydraulic unit	Nm	1