Component Overview

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Fig 1: Chain Housing Cover Seals Components Location

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Chain housing cover seals

1	Chain housing cover
2	Chain housing cover seal, outer right (fill openings with sealant, see 6)
3	Inner chain housing cover seal
4	Chain housing cover rib seal
5	Chain housing cover seal, outer left (fill openings with sealant, see 6)
6	Sealant application on tinning chain housing; Loctite 5900 (000.043.204.35 status 10/08)

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Applying sealant (filling openings in metal seal)

1	When chain housing cover is fitted, apply sealant to joint before fitting valve covers
2	When chain housing cover is fitted, apply sealant to joint before fitting valve covers

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Applying sealant before fitting valve covers

1	When chain housing cover is fitted, apply sealant to joint before fitting valve covers

20 mm Length of sealant applied to joint

Fig 2: Chain Housing Cover Screws Tightening Sequence

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Tightening sequence for chain housing cover

A	Aluminium screw, M6 x 30; timing-case cover to crankcase and cylinder head; always use new aluminium screws
B	Aluminium screw, M6 x 55; inner part of timing-case cover to upper part of crankcase and cylinder head; always use new aluminium screws; outer part of timing-case cover to cylinder head
C	Aluminium screw, M8 x 55; timing-case cover (chain tensioner position) to upper part of crankcase and cylinder head; always use new aluminium screws
D	The chain housing cover must be level with the lower part of the crankcase (use a steel rule or dial gauge)

Fig 3: Chain Tensioner, Joint Flange Components Location

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Chain tensioner, joint flange

1	Joint flange (oil sealing lip with engine oil); align with sleeve or vibration balancer/replace
2	Aluminium screw, M6 x 20; always use new aluminium screws
3	Aluminium screw, M6 x 55 c'ways use new aluminium screws
4	Sealing ring; always replace
5	Chain tensioner