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VS4930 Issue No:1 - 23/07/08
4.3 timing adjustment - setting the VCt Units
(Cylinder head/Camshaft replacement applications)
When carrying out work on cylinder head / camshaft replacement or
valve timing adjustment it will be necessary to re-set the VCT /
camshafts.
When removing the VCT Units, counter-hold the camshafts, with a
spanner, at the hexagons provided on the camshafts. Remove the centre
blanking plugs of the VCT Units, and unscrew and remove the centre
retaining bolts.
Fig.8
4.3.1 Vs4933 Camshaft setting Plate
When installing the VCT Units, the crankshaft is positioned at TDC No.1
cylinder and VS4933 Camshaft Setting Plate is inserted into the slots
located at the rear of the camshafts to position the camshafts in their
‘timed’ position. (Fig.8).
4.3.2
The VCT Units are placed onto the camshafts and the new centre
retaining bolts are inserted and screwed to finger-tight only.
4.3.3
The timing mark of each of the VCT Units should be positioned at
the 12-o-clock position.
VS4931 Setting Plate is inserted onto the VCT Units and the centre bolts
tightened to 25Nm.
4.3.4
Remove VS4931 and VS4933 Setting Plates.
4.3.5
Counter-hold the camshafts, with a spanner, at the hexagons
provided on the camshafts and carry out the final tightening procedure –
tightening the VCT centre retaining bolts 75 degrees.
warning: Do not use Vs4931 and Vs4933 setting Plates to
counter-hold camshafts/VCT Units during final tightening procedure
of the VCt Units retaining bolts.
4.3.6
Insert VS4931 Setting Plate to check that the timing position is
correct and that the timing marks on the sprockets align with the marks
on the VCT Units near to the outer edges of VS4931 Setting Plate upper
arms.
01284 757500
01284 703534
sole Uk Distributor
sealey group,
Bury St. Edmunds, Suffolk.
www.sealey.co.uk
Web
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
imPortant:
No liability is accepted for incorrect use of this product.
warrantY:
Guarantee is 12 months from purchase date, proof of which will be required for any claim.
information:
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