Golf Mk1
Servicing valve gear
Servicing valve gear
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Note: Cylinder heads which have cracks between the valve seats or between a valve seat insert and the spark plug thread can continue to be used without reducing service life, provided that the cracks do not exceed a max. width of 0.5 mm or when no more than the first spark plug threads are cracked.
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→ Fig.1 Checking axial clearance of camshaft Wear limit: 0.15 mm Measure with bucket tappets removed and first and last bearing caps installed. |
→ Fig.2 Installation position of camshaft bearing caps Note centre offset. Before installing camshaft, mount bearing caps and determine installation position. |
→ Fig.4 Camshaft identification, valve timing Identification with hydraulic bucket tappets
Valve timing with 1 mm valve stroke
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→ Fig.5 Valve dimensions Note: Valves are not to be reworked. Only grinding is permitted.
1) Engine codes HM ä 01.97 only |
(with hydraulic valve clearance compensation)
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→ Fig.6 Valve types 05.81 ä installation of valves with 3 grooves Distinguishing features
Note: When performing repairs, 1 and 3-groove valves can be mixed. It is to be noted that the respective valves are only to be installed with the envisaged valve tapers and valve spring seats. |
→ Fig.7 Exchange cylinder heads with camshaft bearing shells Exchange cylinder heads/exchange engines are sometimes supplied with bearing shells for camshafts.
Note: Undersize camshafts are not supplied as replacements. For repairs, install a standard size camshaft with corresponding bearing shells. |