Hydraulic cylinder (rod end) for trunk lid, checking hydraulic system, vario roof (VR) - AD77.50-P-7000-05A
| Scope of test | Measuring instrument/ test connection | Operation/requirement | Specified value |
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| 1.0 | Checking hydraulic cylinder for trunk lid (rod end) &.3.1.( AD77.50-P-2000-15A ) (Fig. A, item 1) Malfunction: trunk lid does not close, or closes only slowly |
Disconnect hydraulic line No. 20 from hydraulic unit, seal connection with plug 129 589 00 91 01 Starting position: Vario roof fully open, trunk lid open, trunk lid rotary tumbler locked Ignition: on Actuate roof switch for 5 s (opening) Read off test pressure while the switch is being actuated |
=>1.1 |
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| 180-200 bar | |||||
| 1.1 | Checking hydraulic cylinder for trunk lid (rod end) &.3.2.( AD77.50-P-2000-15A ) (Fig. B, item 2) Malfunction: trunk lid does not close, or closes only slowly |
Disconnect hydraulic line No. 21 from hydraulic unit, seal connection with plug 129 589 00 91 01 Leave hydraulic line No. 20 disconnected Vario roof fully open, trunk lid open, trunk lid rotary tumbler locked Ignition: on Actuate roof switch for 5 s (opening) Read off test pressure while the switch is being actuated |
AD77.50-P-7000-06A |
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| 180-200 bar | |||||
| 1.2 | Checking hydraulic cylinder for trunk lid (rod end) &.3.4.( AD77.50-P-2000-15A ) (Fig. C, item 1) Malfunction: front catch does not engage |
Disconnect hydraulic line No. 20 from hydraulic unit, seal connection with plug 129 589 00 91 01 Starting position: Vario roof closed, front catch released, trunk lid engaged in catches in trunk, trunk lid open, trunk lid rotary tumbler locked Ignition: on Actuate roof switch for 5 s (closing) Read off test pressure while the switch is being actuated |
=>1.3 |
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| 180-200 bar | |||||
| 1.3 | Checking hydraulic cylinder for trunk lid (rod end) &.3.5.( AD77.50-P-2000-15A ) (Fig. D, item 2) Malfunction: front catch does not engage |
Disconnect hydraulic line No. 21 from hydraulic unit, seal connection with plug 129 589 00 91 01 Leave hydraulic line No. 20 disconnected Vario roof closed, front catch released, trunk lid engaged in catches in trunk, trunk lid open, trunk lid rotary tumbler locked Ignition: on Actuate roof switch for 5 s (closing) Read off test pressure while the switch is being actuated |
AD77.50-P-7000-07A |
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| 180-200 bar |