Installing Hydraulic Pump

Re-fit or replace the following parts when replacing the hydraulic pump: 

• Short pressure line (adapter) on hydraulic pump. → Tightening torque: 35 Nm (26 ftlb.) 
• Holder (support) on hydraulic pump.
• Pressure line between the reservoir and hydraulic pump on 911 Turbo vehicles with manual transmission.

1. Fit the hydraulic pump, move it into installation position and tighten the fastening screws -arrows-  .

   → Tightening torque: 23 Nm (17 ftlb.) 

   → Tightening torque: 10 Nm (7.5 ftlb.) 

   Fig 1: Locating Fitting Hydraulic Pump Fastening Screws

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Press reservoir with a new O-ring (coated with Pentosin) into the hydraulic pump (power-steering pump) and fit the fastening screws -arrows-  . The screw on the holder can be fitted on the left or right side.

   → Tightening torque: 23 Nm (17 ftlb.) 

   → Tightening torque: 10 Nm (7.5 ftlb.) 

   Fig 2: Pressing Reservoir With O-Ring Into Hydraulic Pump

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Position fuel cooler -1-  and tighten the screw -3-  on the holding clamp.
   Fig 3: Identifying Fuel Cooler And Screw

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4. Fit the return line at the reservoir.
   Fig 4: Identifying Return Line At Reservoir

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5. Clip in the return line/hose at the holder for the reservoir (back of the reservoir).
   CAUTION: Clutch pressure lines on vehicles with manual transmission can break (due to vibrations) unless they are secured (to the reservoir) with the clip.

   • Escaping Pentosin can ignite on the hot exhaust system.

   → Ensure that the clip is seated correctly and that the pressure lines are fitted securely in the clip.

6. Fit the clutch pressure lines -1-  and engage them in the clip -2-  on 911 Turbo vehicles with manual transmission.

   Check that the clip is seated correctly and that the pressure lines are fitted securely in the clip.

   → Tightening torque: 13 Nm (9.5 ftlb.) 

   → Tightening torque: 20 Nm (15 ftlb.) 

   Fig 5: Identifying Clutch Pressure Lines On 911 Turbo Vehicles With Manual Transmission

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
7. Fit (screw together) plug-in coupling for pressure line (short pressure line to power-steering pump).

   Install the holder -1-  (variant 2) and fit the pressure hose -6-  at the plug-in coupling.

   1. 7.1. Insert the collar of the holder (for the pressure hose) into the plug-in coupling and tighten the screw. Counter at the lower hexagon on the plug-in coupling while tightening the screw.

      → Tightening torque: 30 Nm (22 ftlb.) 

   2. 7.2. Install the (new) holder -1-  (variant 2) and fit the pressure hose -6-  at the plug-in coupling.
      Fig 6: Identifying Installing Holder 1 (Variant 2)

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
      1. 7.2.1. Push rubber ring -3-  onto the plug-in coupling.
      2. 7.2.2. Fit (new) holder -1-  . Ensure that the rubber sleeve (on the short pressure line) is not damaged and is positioned correctly in the holder -1-  .
      3. 7.2.3. Fit (new) fastening screw -2-  with an internal Torx screw T40 (instead of the old external Torx screw). Tightening torque: 23 Nm (17 ftlb.).

         Use a 1/4-inch socket-wrench insert (change-over ratchet with articulated piece and the required extension) when the engine is installed (for easier access).

      4. 7.2.4. Fit the spring band clamp -4-  on the pressure hose -6-  or on the holder -1-  .
      5. 7.2.5. Fit the pressure hose -6-  at the plug-in coupling (insert it until the plug part engages in the collar of the holder).
      6. 7.2.6. Position the spring band clamp -4-  so that it is on the four stop lugs (on the holder -1-  ). It must also be easily accessible in case it needs to be opened at a later time. Lever/pull off the blue relief ring in this position so that the clamping force of the spring band clamp -4-  takes effect.