Question about 2002 Volkswagen Passat
Chain timing marks are not visual. And in which pos should the chain tensioner be in.
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Posted on Jan 02, 2017
Yes be sure the number one piston is at TDC firing stroke or compresson stroke and line up the timing mark pointer is pointed at exactly zero. One more thing when aligning the camshaft sprocket or sprockets be sure that when you are rotating the sprocket for the cam it is rotating in the correct direction and also be sure you observe the intake valve for number one shutting as you bring the marks up to alignment points, the intake valve and the exhaust valve should be shut when the marks line up if not you could have the cam sprocket off 180 degrees, get it right the first time or you may damage a valve trying to start.
Posted on Dec 29, 2009
Remove the two bolts, the timing chain tensioner and tensioner arm.
NOTE: LH shown; RH similar.
Remove the bolts and the timing chain guides.
CAUTION: Do not compress the ratchet assembly. This will damage the ratchet assembly.
Compress the tensioner plunger, using an edge of a vise.
If the copper links are not visible, mark two links on one end and one link on the other end, and use as timing marks.
If removed, install LH and RH crankshaft sprockets.
Position the tensioner arms and tensioners, and install the bolts.
Posted on Apr 07, 2010
SOURCE: i have a 2002 vw
hi mark,to answer your question,if you look at the very front of the engine you will see some pulleys for the waterpump/pwr steering/alt.just behind you will see a 1.1/2 plastic cover that hides the BELT.(engine designed by Hyundai in collaberation with VW for the far eastern market(China)same block also used for 3cyl diesel.
Posted on Oct 04, 2010
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Timing the Cam to the Crank
There are several ways to time the cam to the crank. Be sure to check the manual before you install the timing chain or belt.
If the old parts are available, carefully compare the new gears or sprockets with the old ones. Check the keyway and timing marks just in case there might have been an error made in manufacturing. Sprockets are sometimes stamped backward. Its much better to find the problem during assembly, rather than waiting until problems show up after reassembly and reinstallation.
Maintaining Valve Timing
During a valve job, it is essential to keep the timing chain or belt in place to maintain correct valve timing. Position the number one cylinder at TDC. Some overhead cam engines use a single long chain for a cam drive. The chain can be wedged against its guides with a tapered block of wood.
the chain tensioner on some ohc engines must be wedged to keep the chain in position during cylinder head removal. courtesy of nissan motors.
Some engines have a lower and upper chain. These engines do not require special attention to wedging the chain. Be sure to look for hidden head bolts and check the repair manual before removing the OHC head.
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Fig. Timing belt and related components-3.5L Engine
Fig. Adjusting the tensioner pulley-3.5L Engine
Fig. Measuring the auto tensioner rod-3.5L Engine
Timing Chain, Sprockets, Front Cover & Seal
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Fig. Timing chain and related components-3.8L Engine
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Fig. Right timing chain markings and installation: (C) exhaust camshaft sprocket (B) intake camshaft sprocket-3.8L Engine
Fig. Sealant application (1 inch bead width)-3.8L Engine
Fig. Timing cover sealant application-3.8L Engine
Fig. Timing cover gasket installation (A) gaskets-3.8L Engine
Fig. Timing cover bolt torque sequence and specification-3.8L Engine
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