Resumption of the information collected from
https://www.youtube.com/watch?v=JCQOsgQyU1A
https://www.youtube.com/watch?v=9RBy7nVAMAo
Source of these images:
I dare use them as published here by vocky, November 5th, 2006, doesn´t matter ?
INT - inlet cam sprocket, EXH - exhaust cam sprocket
The TDC reference points on the timing chain are indicated by coloured links in the chain. These must line up with the markings on the timing sprockets.
There are 14 links between INT and EXH cams excluding coloured links
and 26 links between INT and crankshaft timing marks excluding coloured links
and 31 links between crankshaft and EXH timing marks excluding coloured links
To remove / install the cam sprocket bolt, counter-hold the camshaft via the hexagon section of it
<u>Timing adjustment</u>
When service work has required the dismantling/removal of chains, sprockets and tensioners, engine timing will need to be re-established.
Initial condition:
Engine head attached.
Crankshaft in its basic position - 4th cylinder at TDC, the cam lobes on both camshafts over this cylinder should point upwards.
EXT cam sprocket removed.
INT cam sprocket installed.
Insert the chain from the top, it will be hanging on cams, place the chain below the crankshaft sprocket
Attach the KM-6148 tool
Position the timing chain on the INT cam sprocket so that the COPPER coloured link is located at the "INT" mark on the sprocket.
Slide the 'positioning pin' of KM-6148 tool into the designated hole in the INT sprocket
Attach the left guide rail and screw it up
Attach the right push rail and screw it up
Position the chain on the crankshaft sprocket so that respective marks are aligned. To this purpose (by means of temporarily attached pulley), shift the crankshaft slightly counter-clockwise to a position before TDC then assign the chain mark with the crankshaft one, then shift the crankshaft slightly clockwise back until the chain portion on the right is tightened. Then check again the crankshaft basic position - 4th cylinder at TDC
At the crankshaft sprocket, support some neighbouring chain links by inserting a plastic liner at right sideward-down (see yellow arrow as shown in the video)
Right side of the chain is tight, left side wraps around the crankshaft sprocket (see the video)
Secure the camshaft timing chain with cable ties to the INT camshaft sprocket
Detach the KM-6148 tool
Install the EXH camshaft sprocket. Check that the TDC reference points line up.
Position the timing chain on the EXH cam sprocket so that the SILVER coloured link is located at the "EXH" mark on the sprocket. Rotate the EXH camshaft by the hexagon until the EXH camshaft sprocket is seated in the guide and then crew it up
Detach the cable ties from the INT camshaft sprocket
Attach the KM-6148 tool
Note: in this position, the cam lobes on both camshafts of cylinder No. 4 should point upwards.
Slide the 'positioning pins' of KM-6148 tool into the designated holes on the INT and EXH camshaft sprockets.
Attach the upper guide rail with its holder
Initialise the tensioner and install it into the engine then complete the initialisation, following the instructions appropriate to the tensioner respective type (Z20NET …).
Remove the plastic liner below the crankshaft sprocket
Check that the chain coloured marks are assigned to their respective EXH and INT marks
Check that the chain coloured mark is assigned to its respective crankshaft sprocket mark
Turn the crankshaft twice (720[sup]0[/sup]) returning the crankshaft to mark and the 4th cylinder to TDC.
Push the 'positioning pins' into the holes in the camshaft sprockets to check engine timing is correct.
Remove the KM-6148 tool.
<u>Timing check</u>
Initial condition:
Crankshaft in its basic position - 4th cylinder at TDC, the cam lobes on both camshafts over this cylinder should point upwards.
Attach the KM-6148 tool
Slide both 'positioning pins' of KM-6148 tool into designated holes in the INT and EXH camshaft sprockets
If the 'positioning pins' cannot enter these camshaft sprocket holes, timing will require adjustment
Detach the KM-6148 tool
Important note:
This manual is published here for information purposes only.
To keep warranty conditions, the ordinary workshop manual issued by the Z22SE engine manufacturer must be applied to the Z22SE chain timing procedure.
Second revised version of this text: 2011/03
This is the KM-6148 / Sealey VS4766 timing tool.
When someone would be so kind and publish here the tool A,B,C,D,E,F dimensions then a possibility to make something such in home workshop exists.
