Convertible Top Hydraulic Cylinder: Service and Repair

Removing And Installing Hydraulic Cylinders







Removing and installing hydraulic cylinders







CAUTION: Damage to hydraulic lines. Do not bend, trap or crush hydraulic lines during installation.
- Pay special attention when routing hydraulic lines -D, E, F- in the clips.







General remarks on hydraulic system
The hydraulic system is sensitive to ingress of dirt. As soon as the system is opened by the plug, a cloth must be placed under the hydraulic lines to catch escaping hydraulic oil.

The hydraulic convertible top uses a closed hydraulic system. In general, the hydraulic system will need filling only after opening the hydraulic circuit (after parts replacement). Use only original Porsche hydraulic oil when changing or topping up hydraulic fluid.

Opening and closing hydraulic valve of the hydraulic pump

Access for opening and closing the hydraulic valve







To open, insert Allen key -A- into hydraulic valve -B- and turn approx. 1 turn to the left.
To close, insert Allen key into hydraulic valve -B- and turn to the right.

Filling the hydraulic system
Lay a cloth under the hydraulic pump when filling. Do not fill above the Max marking.

Filling the hydraulic system







1. Unscrew plug.
2. Fill system using only original Porsche hydraulic oil.
3. Screw in plug.

Bleeding the hydraulic system

CAUTION: Damage to the convertible-top frame if not running synchronously.
- Do not bleed the hydraulic system until the hydraulic cylinders have been removed from the convertible-top supports and the left and right drive levers have been removed.

The system has a self-bleeding feature. Three to four operations will bleed the system. After bleeding, check the oil level in the hydraulic pump reservoir and correct if necessary.
Bleeding requires the hydraulic valve to be closed.

Line routing when replacing right hydraulic cylinder as of model year 2002

WARNING:
- Damage to hydraulic lines. Do not bend, trap or crush hydraulic lines during installation.
- The spare hydraulic cylinder has hydraulic lines approx. twice the length of the standard component and can be installed on both sides. To prevent damage to hydraulic lines due to bending, trapping or crushing during installation, the lines must be routed properly.

1. Line routing







1. Wrap the hydraulic lines once round the support of the frame for the roll-over bar. Fix the lines with a tie wrap -arrow-.
2. The lines must be connected to the pump without tension and twisting. Observe allocation of hydraulic lines! -Blue, red-

Tightening torques