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Engine
Engine
1.6.3.5
1.6.3.6
1.6.3.7
911 GT3 Cup (991 II)
30
Installing the crankshaft sealing ring
If any small edges or burrs are found on the chamfer of the crankshaft flange,
carefully remove them with an oilstone. Then, carefully clean the crankshaft
journal and crankcase bore using solvent naphtha or acetone and a clean lint -
free cloth.
Never use an abrasive or polishing cloth or brushes with metal bristles on the sealing
surface of the crankshaft flange. Only use a special metal-polishing pad to remove
corrosion on the crankshaft flange. Then clean the crankshaft flange carefully using
acetone or solvent naphtha.
Unscrew the press-in tool (Porsche spare part no.: 9699/3) (Figure 1.6.3.5).
Slide the sealing ring with red assembly protection onto the base plate. Grease
the outside of the sealing ring (Figure 1.6.3.6 and Figure 1.6.3.7).
Secure the base plate to the crankshaft using two hexagon socket head bolts
a/f 8 (arrows in Figure 1.6.3.7).
Screw the mounting bell onto the base plate
NOTE
Tighten the a/f 19 hexagon-head bolt until strong resistance is felt.
Leave the assembly tool in the end position for one to two minutes to allow the
sealing ring and sealing lip to settle into their positions
Undo the a/f 19 hexagon-head bolt and remove the press-in tool.
MY 2018
Damage to the sealing ring
Leakage in the engine
Do not unscrew the a/f 19 hexagon-head bolt of
•
the press-in tool past the point of resistance.
Version: 4/20/2018
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