S5 Workshop Manual Engine
Valve Guide Pipe Enlarged Dimensions
Enlarged dimension mm (inch)
Enlarged dimension valve duct hole dimension
(inch.)
12.050 - 12.068 ( 0.4744 ～ 0.4751)
12.250 - 12.268 (0.4823 ～ 0.4830)
12.500 - 12.518 (0.4921 ～ 0.4928)
Notes:
1. Before installing, clean each part.
2. Apply oil onto the sliding and rotating parts.
3. Install spring seat.
4. Lightly knock valve oil seal by special tool in the correct position.
Notes:
■ Do not use old valve oil seal.
■ Improper installation of valve oil seal may cause oil leakage of valve guide pipe.
Apply oil onto each valve. Valve was
inserted in the valve guide pipe Avoid to
use hard force to push valve into sealing
piece. After inserting valve, inspect
whether it can slide smoothly.
Place valve spring and make porcelain
surface towards upper seat of valve
spring, and then install spring seat.
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