Audi A4 B8 Lower Cam Chain 5 Marks Location

Today we're going to talk about replacing the timing chain, timing chain guides, timing chain tensioner on Volkswagen and Audi 2.0T TSI engines.  If you are not familiar with the issues effectually this, have a expect here for TSI Timing Chain Issues.

This will be a pace by stride process of how to replace the components, but will require the technical skill for the job.  This would exist considered a moderate to advanced DIY, which is why this write upwards volition not be showing every single footstep.  This write up is inteded for showing the particular effectually the chains and timing of the engine.  It is important to annotation that any mistake in timing your engine will likely outcome in major engine damage.

● Remove the vibration dampener
Use T10355, T10368, 24mm socket on a breaker bar, and a 2nd person. Accept the second person concord the T10355 on the vibration dampener and put the 24mm socket inside of the T10355 and loosen the crankshaft bolt. Remove the crankshaft bolt and slide the T10368 onto the crank commodities, remove the vibration dampener and reinstall the crankshaft commodities hand tight.

IMPORTANT NOTE: The vibration dampener uses teeth that mesh with the lower timing gear, which then mesh with the crank shaft.  These teeth have a unmarried broad key.  These all must match upward during installation.  The T10368 Lower Crank Gear Spacer tool is installed here to keep the lower creepo gear in place and in the correct orientation.

● Remove the serpentine belt tensioner caster. Use 17mm socket to remove the commodities for the pulley. Reinstall the bolt as the tensioner will need to be moved.

● Remove the bolts for the N75 valve. They are 4mm allen bolts. Slide the N75 to the side when the bolts are removed.

● Remove the turbo muffler. There are three 5mm allen bolts property the muffler on.

● Remove the lower timing comprehend. The bolts for the lower timing cover are T30 torx bolts. Pry the cover off with a flat head screwdriver.

● Remove the oil pump concatenation. Retract the tensioning guide and lock with T40011.  Remove the T30 bolt property the guide on. The chain volition sit off to the side.

● Retract the timing chain tensioner. (only if not replacing with a new one)
NOTE: There are ii dissimilar style timing chain tensioners. (Photo below)

Old Style Tensioner: use a suitable tool, lift the concatenation tensioner locking wedge and press in the guide. Then secure the tensioner in place with locking pivot T40011.
New Style Tensioner: Install the T40243, this footstep volition be easier with a second person.
Squeeze the tensioner circlip together, push the T40243 so the tensioner retracts. Then
secure the tensioner in the retracted position with the T40267.

● Remove the two T30 bolts belongings the chain tensioner to the engine cake.

● Remove the chain guide on the left side. A 10mm triple square bolt holds the guide on. Remove the bolt and slide the guide downward.

● Lock the intake and exhaust camshafts in place using T40271/1 and T40271/2
NOTE: When installing the locking tools for the camshafts, the camshafts may need to be slightly moved for the tab on the tool and the teeth on the gears to line upwards. For the intake camshaft, use an 18mm wrench on the shaft of the cam to move it (pictured below).  For the exhaust camshaft, there are 2 different versions of camshafts and they accept different ways to move the camshaft.
Version i: Similar to the intake camshaft, an 18mm wrench may exist used to move the camshaft.
Version 2: You will demand special tool T10172 to move the camshaft.

T40271 - Cam Lock Tool Genuine VW/Audi

T40271 - Cam Lock Tool Werkzeug

Consummate TSI Timing Tool Kit with T40271

● Remove the concatenation guide on the right side. Two 10mm triple square bolts hold the guide on.

● Remove the timing concatenation.

● Remove the tensioner for the residual shaft chain. The tensioner is a 27mm commodities way tensioner. (shown below)

● Remove all three guides. The guides are held on with 10mm triple square bolts.

● Remove the residuum shaft chain

Annotation: Ensure the balance shafts are in time earlier proceeding. This will aid yous place if there was a timing issue before the vehicle was taken apart.  See the lower timing chain marker details below.

Yous are now ready to start installing all of the timing bondage.  Below we have a picture of the chains installed, with their timing marks.  This is a very disquisitional step to ensure you properly fourth dimension your engine.  Yous will need to get the concatenation on all the timing marks with 100% accuracy.

Upper Timing Chain and TIming Marks

The new upper timing chain will have 3 copper links.  As pictured below y'all volition encounter the 2 copper links closest together go to the camshafts.  These copper links should match upward with the timing marks highlighted in yellow on the camshaft gears.  The Lower portion of the timing chain will go on the crank sprock on the middle row of teeth.  This lower copper link should lucifer upwardly to the arrow stamped in your creepo sprocket highlighted in yellow as well.

Lower (Balance Shaft) Timing Chain Marks

The new lower timing chain will accept three blue grayness links on it.  2 of these blue greyness links will line upwards with the timing marks on the left and right residuum shafts which are highlighted beneath in xanthous.  The other blue grey link will go to the crank gear on the inner most teeth, and has the timing mark also highlighted in xanthous below.

Note: The original timing chain on the vehicle does not take these colored links.  To ensure everything is in time the residuum shaft timing marks should exist pointing to the torx bolts but higher up the residuum shaft gears shown below.  This would only exist relevant if you were not replacing this lower timing concatenation, or if you were checking timing earlier replacing.  We recommend replacing the chain.

● Install the balance shaft (Lower) chain

● Install new guides for the balance shaft chain (Torque to 20nm)

● Ensure the chain is in time (timing marking details above)

● Install the residual shaft concatenation tensioner (Torque to 85nm)

● Install the camshaft timing chain. Ensure the copper links are on the timing marks
(as shown above)

● Install the new upper chain on the crankshaft sprocket. Ensure the copper link is aligned with the marking on the sprocket (as shown to a higher place)

● Install the new timing chain guide on the right side (Torque bolts to 20nm)

● Install the new tensioning guide on the left side (Torque bolt to 20nm)

NOTE: When installing the tensioning guide, The camshaft lock volition accept to be removed. Using a second person, concord the camshaft with either an 18mm wrench or the T10172 (depending on specific camshaft style). Remove the locking tool, then slide the new guide up from the bottom.

● Install the new timing chain tensioner (Torque the T30 bolts to 9nm)

● Pull the pivot for the tensioner Subsequently ensuring the chain is in time with the camshafts and the crankshaft.  Squeeze bothing long upper timing chain guides the the center to permit the tensioner to extend.

IMPORTANT Annotation: Once you lot take washed this, accept the small spring clip where the tensioner meets the guide, and slide information technology equally far dorsum on the serated shaft equally you can.  This volition help prevent that tensioner piston from collapsing in, if you were to have an oil pressure issue.

● Reinstall the oil pump chain (does non require timing)

● Reinstall the oil pump tensioning guide (Torque T30 bolt to 9nm)

● Turn over Engine until timing marks line up to verify timing of the engine.

● Reinstall Cam Span.  Its often helpful to slightly rotate the cams with a wrench while installing your cam bridge, if it is having trouble going on. (Torque mounting bolts to 9nm)

● Utilise RTV to the new lower timing encompass

● Install the new lower timing embrace. There are two different versions of timing
covers. One with 8 bolts, and 1 with fifteen bolts
- Covers With 8 Bolts: Tighten the bolts to 4nm. Then tighten the bolts an
additional 45 degrees (⅛ turn)
 - Covers With 15 Bolts: Tighten the bolts to 8nm. And then tighten the bolts an
additional 45 degrees (⅛ turn)

● Remove the old vibration dampener bolt along with the T10368.

● Reinstall the vibration dampener. Ensure the dampener is on the crank sprocket correctly equally the dampener can only be installed one way.  Make sure when reinstalling the vibration dampener you line up the wider key with the one on the lower crank gear.  This can be difficult to tell, only is very important to ensure your engine doesnt jump time.

If the dampener is installed incorrectly, engine damage WILL occur

● Install the new vibration dampener commodities. Using a second person and the T10355,(torque the commodities to 150nm). And then tighten the bolt an boosted ninety degrees. This bolt must be torqued 100% correctly or possible engine damage may occur

● Rotate the engine over by hand using the 24mm socket twice, bringing the engine back to cylinder 1 TDC

● Check the valve timing, measure with dial calipers from the outer edge of the subclass on the camshaft comprehend (photo examples above) to the timing mark on the intake camshaft. It should be from 61 to 64mm. Then measure from the timing mark on the frazzle camshaft to the timing mark on the intake camshaft. It should be 124 to 126mm

● Reinstall the turbo muffler and N75 valve

● Reinstall the upper timing encompass with new seals. Torque the bolts to 9nm

● Reinstall the N205 valve. Torque bolts to 9nm (Wait until the dipstick tube is reinstalled to install the bolt that holds the dipstick tube and N205 valve)

● Reinstall the dipstick tube. Torque the bolts to 9nm

● Raise the engine and reinstall the engine mount bracket. Tighten to 40nm,
tighten + an boosted 180 degrees

● Install the engine mount.

- Torque the bolts from the engine mount to the vehicle
body to 40nm plus an additional 90 degrees.

-Torque the bolts holding the engine
mount to the engine mount bracket to 60nm plus an additional ninety degrees

● Reinstall the serpentine chugalug tensioner pulley

● Reinstall the serpentine belt

● Reinstall the tab for the accuse air hose

● Reinstall the charge air hose

Its imperative your engine is perfectly in time in one case you have completed the job.  This should be double checked earlier starting your engine, equally an out of time engine will cause major harm if started.  If you are unsure of this a local proffesional in your expanse should be consulted.

You lot have now completed your two.0t TSI Timing Chains

Write up put together by Jack Hoffmann - DAP Repair Technician

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Audi A4 B8 Lower Cam Chain 5 Marks Location

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