Vario roof (VR), checking hydraulic system

AD77.50-P-7000A

Vario roof (VR), checking hydraulic system

4.7.97

Danger!

Risk of injury caused by pinching or jamming when working on loaded springs or spring bodies

Use only approved clamping devices; shield off hazard area if necessary.
Inspect special tools for damage and proper operation (visual inspection).
Wear protective gloves.

AS00.00-Z-0001-01A

Danger!

Risk of injury as a result of trapping or crushing when working on the partly open Vario roof (stop mode) or within its closing range as a result of the Vario roof suddenly collapsing

Secure the Vario roof with a suitable special tool.

AS77.50-Z-0001-01A

 Danger!

Risk of injury. Moving parts can pinch, crush or, in extreme cases even sever extremities.

No parts of the body or limbs should be within the operating range of the mechanism when moving components.

AS00.00-Z-0009-01A

Connecting and using test equipment

AD00.00-P-1000AZ

Vario roof (VR) diagnosis, previous knowledge

AD77.50-P-2000A

Vario roof (VR), location of hydraulic components

GF77.30-P-0001-02A



Before starting the test, check the oil level in the hydraulic unit reservoir and correct if necessary (Maintenance Manual).

Oil loss in supply reservoir



To enable inspection work to be performed correctly in the event of loss of fluid from the hydraulic system, remove any trim elements which conceal the hydraulic components.



The front catch can be locked or released with the emergency operation key (in toolkit) the catches in the trunk can be released via the pull cables (see operating instructions).



The hydraulic circuits for the individual roof movements and their hydraulic components can be checked individually.

a

Connect up pressure gauge according to connection diagram

AD77.50-P-2000-06A

b

Check hydraulic unit and hydraulic cylinder for Vario roof

AR77.37-P-3502G