Oil Pump With Coolant Guide Housing - Engine Removed

WM 172019 Removing and installing oil pump with coolant guide housing - engine removed





Caution
When working on the engine, absolute cleanliness is essential! An engine cover should be used on the engine assembly support. Lay removed engine parts on a clean base and cover them without fail. Even the smallest particles of dirt can block up oil bores.

Caution
^ After removal of the chain tensioner, the crankshaft must not be turned under any circumstances, because otherwise the timing chain may jump over!

Removing oil pump

1. Place collection pan beneath engine to catch remaining engine oil.





2. Drain engine oil. Reinstall oil drain plug (hexagon socket a/f 8) with new sealing ring after a drainage period of approx. 20 minutes.

Tightening torque 50 Nm (37 ftlb.)

3. Remove catalytic converters.
4. Remove engine carrier. To do this, unscrew four M10 hexagon head collar nuts (self-locking, a/f 15) and one M6 hexagon-head bolt -Arrow-. Remove engine carrier.








5. Turn engine clockwise at hexagon-head bolt (a/f 24) of crankshaft belt pulley to OT marking -Arrow-. Using special tool dowel pins 9595/1 disconnect belt pulley -see figure-. Use short dowel pin.

Information
^ After removal of the chain tensioner, the crankshaft must not be turned under any circumstances, because otherwise the timing chain may jump over. Changes to the timing can result in engine damage!





6. Remove chain tensioner, cylinder bank 4-6 -Arrow-. To do so, release and unscrew the chain tensioner with a socket wrench insert (outer hexagon a/f 14).
7. Remove chain tensioner, cylinder bank 1-3 (hexagon a/f 32) -Arrow-.





8. Remove primary chain tensioner (near oil filter) (hexagon a/f 32).





9. Remove cable plug of the coolant temperature sensor -1-. Then unscrew eight M6 x 20 and two M6 x 80 hexagon-head bolts -see figure-.
10. Carefully remove oil pump.





11. Remove old metal seals. The old seal must be separated at the connecting webs -Arrows- between coolant pump and oil pump housing.

Installing oil pump

Information
^ The O-rings on the oil pump flange and the metal seals must be replaced!

1. Clean and degrease sealing surfaces on oil pump housing -see figure- and on crankcase (e.g. with acetone or solvent naphtha). Replace both O-rings on oil pump drive flange -Arrow-. Grease oil pump flange and the bore on the crankcase with Optimoly MP 3 special grease (available from Porsche parts service).











Metal seals for oil pump/coolant guide housing

2. Separate new metal seal (combination seal for coolant pump and oil pump housing) at the connecting webs -see arrows- and position seals for oil pump and coolant guide housing -bottom of figure-.

Information
^ Do not use force when positioning oil pump (otherwise the housing could break or the oil pump drive could be damaged). Carefully remove any burrs on the crankcase bore or drive flange of the oil pump using an oilstone!

3. Fit the oil pump. To do this, fix the oil pump onto the studs of the engine carrier. Insert the oil pump driver (outer hexagon) into the oil pump drive flange and turn manually until it fits into the hexagon socket of the intermediate shaft. At the same time, gently push the oil pump onto the crankcase. When doing this, the drive flange must slide into the crankcase bore of the intermediate shaft (do not tilt).
4. Push on cable plug of the coolant temperature sensor -Arrow-. Then position eight M6 x 20 and two M6 x 80 hexagon-head bolts -see figure- evenly for the oil pump and coolant guide housing and tighten.





Tightening torque 10 Nm (7.5 ftlb.)

5. Install primary chain tensioner with new sealing ring and tighten with torque (hexagon a/f 32).

Tightening torque 80 Nm (59 ftlb.)





6. Position chain tensioner, cylinder bank 1-3 with new sealing ring and tighten with torque -Arrow- (hexagon a/f 32).

Tightening torque 80 Nm (59 ftlb.)





7. Position chain tensioner, cylinder bank 4-6 with new sealing ring using socket wrench insert (outer hexagon a/f 14) -Arrow- and tighten with torque.

Tightening torque 80 Nm (59 ftlb.)

8. Fill engine oil.
9. Install engine carrier. To so this, position four new M10 hexagon head collar nuts (self-locking, a/f 15) and one M6 hexagon-head bolt -Arrows- and tighten.





Tightening torque M6 bolt 10 Nm (7.5 ftlb.)

Tightening torque M10 collar nuts 45 Nm (33 ftlb.)

10. Pull fixing pin off crankshaft belt pulley.
11. Install catalytic converters.