Convertible Top Pump: Service and Repair

618419 Removing And Installing Hydraulic Pump






Preliminary work
Remove trim panel for hood compartment.

Removing hydraulic mount

Disconnecting electric plug connection for hydraulic pump






1. Cut tie-wrap -1- around the wire harness for hydraulic pump.






2. Press lugs -arrows A- and disconnect electric plug connection -2- -arrow B-.
3. Unlock connector -2- by pressing the lug -arrow C- and push out of the bracket -arrow D-.

Removing hydraulic pump






1. Move rubber holder -1- in -direction of arrow A- from the support for hydraulic pump -4-.






2. Unscrew fastening nuts -2- and take out hydraulic pump -3- from the support for hydraulic pump upwards -arrow B-.

NOTE: Lay cloth under banjo bolt before unscrewing.

3. Unscrew banjo bolts -2A, 2B- on the hydraulic pump -1- and take out hydraulic lines -A, B- with sealing rings -3, 4-.






4. Unscrew silent mount -5-.

Removing support for hydraulic pump






1. Release fixing clip -1- by pressing the lugs on the underside of the support together -2- and pull wire harness -3- upwards -arrow A-.






2. Undo fastening nuts -4- and take off support for hydraulic pump -2- -arrow B-.

Installing hydraulic pump

Installing support for hydraulic pump






1. Position support for hydraulic pump -2- on frame for roll-over protection system -arrow A- and screw down the fastening nuts -4-. Tightening torque Tightening torque : 7.5 ftlb.






2. Press fixing clip -1- on wire harness -3- in the support -arrow B-.

Installing hydraulic pump






CAUTION: Damage to hydraulic lines.

- Do not bend, trap or crush hydraulic lines when removing and installing.
- Pay special attention when routing hydraulic lines in the clips.

NOTE: Always replace sealing rings.

1. Screw down silent mount -5-.






2. Push on sealing rings -3, 4- and hydraulic lines -A- with the red ring. Screw in banjo bolt -2A- on the lower or right side of the hydraulic pump -1-. Tightening torque Tightening torque: 9 ftlb.+1.5 ftlb.
3. Push on sealing rings -3, 4- and hydraulic lines -B- with the blue ring. Screw in banjo bolt -2B- on the upper or left side of the hydraulic pump -1-. Tightening torque Tightening torque: 9 ftlb.+1.5 ftlb.
4. Position hydraulic pump -3- on holder for hydraulic pump -4- -arrow A- and screw down the fastening nuts -2-.






5. Push in rubber holder -1- in support for hydraulic pump -arrow B-.

Locking electric plug connection for hydraulic pump






1. Push plug connection -2- in bracket -arrow A- and join plug connection -arrow B-.






2. Insert new tie-wrap -1- around wire harness for hydraulic pump and fasten.

General information on the hydraulic system
The hydraulic system is sensitive to penetration 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 to be filled only if the hydraulic circuit was opened (after parts replacement). Only Original Porsche hydraulic oil must be used when changing or topping up the hydraulic oil.

Opening and closing hydraulic valve of the hydraulic pump






To open, insert the Allen key -A- through the bore -X- of the roll-over bar module into the hydraulic valve -B- and turn approx. 1 turn to the left.






To close, insert the Allen key -A- through the bore of the roll-over bar module -X- into the hydraulic valve -B- and turn to the right.

Filling and bleeding the hydraulic system






It is essential to lay a cloth underneath the hydraulic pump when filling. Do not fill above the cross hair marking.






1. Unscrew screw plug.
2. Fill system only using Original Porsche hydraulic oil - OIL.
3. Screw in plug. Tightening torque Tightening torque: 7.5 ftlb.+0.5 ftlb.

Bleeding the hydraulic system

CAUTION: Damage to the convertible-top frame if not running synchronously.
- Bleed the hydraulic system only after the hydraulic cylinders have been removed from the convertible-top supports and drive levers on the left and right.

- The system has a self-bleeding feature. Three to four operations will bleed the system. After bleeding, check the oil level in the container on the hydraulic pump and check if necessary.

To bleed, the hydraulic valve must be closed.

Subsequent work
Install trim panel for convertible top rest.