Best Audi A8 Timing Belt Replacement - Hi friends Audi Sport Car, In the article that you read this time with the title Best Audi A8 Timing Belt Replacement, We have prepared this article well for you to read and retrieve information from it. hopefully fill the posts Article lainnya, we write this you can understand. Alright, happy reading.

Title : Best Audi A8 Timing Belt Replacement
link : Best Audi A8 Timing Belt Replacement

Best Audi A8 Timing Belt Replacement

Overview
The next physical care for is to live used on the A8 4.2 32 Valve (ABZ) motor. This engine was establish on the 1997 to 1999 U.S. saltation A8's. This physical care for tin also live used for the 3.7 V8 engines. Much of this physical care for is applicable to the 2000 in addition to newer 4.2 twoscore valve (XXX) motor. However, the cam locking devices are different. Please consult the Bently manual when using this procedure.

Click hither for a PDF version of this procedure, easiest to impress out in addition to job a checklist when performing this project (2.3 Mb). You tin right click on it in addition to select "save target as" in addition to download it to your computer.

Standard Tools Required

• Set of open-end wrenches (10mm, 12mm, in addition to 13mm most commonly)
• Set of socket-drive allen wrenches (4mm, 5mm, in addition to 6mm most commonly)
• Set of deep-well 3/8" displace socket wrenches (10mm, 12mm, in addition to 13mm most commonly)
• Set of normal depth 3/8" displace socket wrenches (10mm, 12mm, in addition to 13mm most commonly)
• Set of normal depth 1/2" displace socket wrenches (10mm, 12mm, in addition to 13mm most commonly)
• Set of deep-well 3/8" displace socket wrenches (10mm, 12mm, in addition to 13mm most commonly)
• Set of socket displace Torx bits, (#30 most commonly)
• Screwdrivers, both slotted in addition to Phillips drive, diverse sizes in addition to lengths
• 3/8" in addition to 1/2" displace socket wrenches, fine ratchet on the 3/8" displace helps a lot
  
  

Special Tools Required

• AS4394 Camshaft sprocket belongings tool
• 3197 Harmonic balancer pulley holder
• 3341 Camshaft Locating fixtures
• 2079 Harmonic balancer pulley wrench
• Matra V159 tensioner

You tin rent these tools from audipages.com, click hither to abide by out more.

Nomenclature
When a seat is referred to “Right Side”, this way the rider side of the vehicle. “Left side” is thus the driver's side of the vehicle (Left-hand displace models).

General Note
Whenever a purpose is removed from the engine, all corresponding attachment hardware should live kept amongst it for slow reinstallation. Clean all parts before installing dorsum onto the engine.

Remove the Front End
The next physical care for does non demo the forepart goal removed. It was done amongst the forepart goal installed. This physical care for is much easier if the forepart goal is removed. It volition salve a pregnant amount of fourth dimension in addition to a few knuckles. Follow this physical care for for forepart goal removal first, in addition to so alternative upward this physical care for in addition to proceed forward.



Removing the forepart goal for this physical care for tin salve a pregnant amount of fourth dimension in addition to a few knuckles. Follow this link for the procedure.

Replace the Oil Cooler O-Rings in addition to Plastic Pipe
Sooner or later on the crude cooler o-rings in addition to plastic connecting pipage volition harden in addition to perish bad resulting inward an crude leak or coolant leak at the right forepart of the block. With the forepart goal removed in addition to the right side timing belt comprehend off, it takes virtually 1 to 1.5 hours to alter the crude cooler o-rings in addition to plastic pipe. Parts are virtually $30. Remove the forepart end, the right side timing belt cover, and follow this procedure. It is significantly easier amongst the forepart goal removed. You won't demand all of the tools set out inward the procedure, exactly a few of them.

Remove Covers
Remove the air intake breather tubes (2) from the forepart of the engine compartment to the air box. The comprehend at the forepart of the engine is clipped inward place- exactly elevator it direct upward in addition to it volition come upward free.



Remove the air duct that runs from the air box to the throttle body. Loosen the ii hose clamps (one on each end) in addition to carefully loosen the safe from the attach points.



Remove the 3 plastic engine beauty covers. Start amongst the ii outer pieces (held inward identify amongst ii allen caput bolts each). Then take away the centre comprehend (held inward identify yesteryear 4 allen caput bolts).





After removal of the covers, you lot should encounter this
(replace the crude filler cap so junk doesn't autumn in!)

Drain Radiator
Remove the dissonance insulation panel nether the engine (large plastic cover). Place a bucket nether the auto that tin concur 3 gallons. Connect a curt length of tubing to the radiator drain (labeled "K" inward the moving painting below). Remove the oval-shaped bumper comprehend from the driver's side forepart bumper (pry out amongst small-scale flat-blade screwdriver- the slot for the screwdriver is towards the centre of the car). Remove the overflow reservoir cap.



Open the ii high-point bleed ports at the driver's side raise of the engine compartment. Disconnect the auxiliary H2O circulation heart electrical connector.



Open the blueish stopcock several turns in addition to drain the radiator. If you lot are changing the radiator fluid at the same time, in addition to so take away the ii lower (engine mounted) drain plugs. Use depression pressure level air to blow out the radiator through the overflow canister's create total port.







Remove Radiator Hoses
Once the radiator has been drained, take away the ii H2O hoses from the forepart of the engine. Remove the plastic bracket attached to the rider side timing belt comprehend that holds the ii hoses inward place.



On the upper hose, loosen the hose clamps in addition to CAREFULLY interruption the hose complimentary from its mounting points. The upper hose is connected to the engine inward ii places in addition to the radiator inward 1 place. Completely take away this hose.



After the removal of the upper hose, a 2nd hose becomes visible. Loosen the hose clamp on this hose where it attaches to the engine in addition to carefully take away from the engine. Simply swing this hose out of the way to the rider side of the engine- no demand to disconnect at the other end.

Remove the Two Cooling Fans
Remove the ii bolts belongings the rider side fan cover onto the radiator.



Using a 10mm wrench on 1 of the 3 fan pulley bolts to concur the fan still, loosen the large nut belongings the fan onto the pulley (big Crescent industrial plant great). NOTE- THIS IS LEFT-HAND THREADED- DO NOT TURN TO THE LEFT TO LOOSEN! DAMAGE MAY RESULT!



Once completely loosened, take away the fan in addition to cover every bit an assembly yesteryear lifting direct up. (The lower share of the cover is held inward identify yesteryear clips that are disengaged yesteryear lifting the cover direct up.)

The electrical fan removal is a niggling trickier. First, take away the torso pivot belongings the fan inward place- it is located on the fan cover towards the centre of the engine in addition to lower (it would seem at 8:00 if you lot await at the fan from the forepart of the car). Use a long flat-blade screwdriver to interruption the pin- in that location is no way to take away without breaking it. See photo.



Once the pivot has been removed, the electrical fan in addition to cover tin live removed every bit a unmarried unit of measurement yesteryear carefully lifting upward on the small-scale tab located at the 3:00 seat (viewed from forepart of car) on the fan cover in addition to rotating the entire assembly clockwise (viewed from forepart of car- the top of the fan cover moves towards the driver's side of the car) about five degrees. Then the assembly tin live pulled out of the radiator cover towards the dorsum of the engine. Several zip-tie electrical cable necktie downs must live removed inward monastic say to set the fan assembly off to the driver's side of the engine compartment. These are reusable, in addition to tin live loosened yesteryear pressing downward on a small-scale tab spell pushing on the goal of the tie.

Remove Serpentine Belt, Fan Pulley in addition to Timing Belt Cover
Using a permanent marker, score the serpentine belt's administration of rotation (I job clockwise for consistency) so that it tin live reinstalled inward the same orientation. If replacing the belt, this is non necessary. Remove the serpentine belt yesteryear pulling upward on the tensioner stud (counter clockwise rotation viewed from the forepart of the engine) using a 13mm deep socket in addition to 3/8” drive, amongst the displace grip towards the centre of the engine. By pulling upward on the tensioner, it should loosen the belt, in addition to you lot should live able to easily take away the belt from the myriad pullies it involves. In the photograph below, the serpentine belt has been removed inward monastic say to encounter the tensioner bolt.



Remove the fan pulley from the forepart of the rider side timing belt comprehend yesteryear removing the 3 bolts belongings it to the bearing assembly.



Remove the driver's side timing belt comprehend yesteryear removing the ii large hex-head shoulder nuts from the expression upward of the cover. You may demand to gently tap the comprehend amongst a safe mallet to loosen it for removal.

Using particular tools 3197 in addition to 2079, loosen (do NOT take away yet) the large bolt at the centre of the harmonic balancer. The engine must live rotated such that the belongings tool engages the harmonic balancer AND fits inward the grooves inward the rider side timing belt comprehend casting (see the photograph below). Use a Ѕ” displace breaker bar amongst the particular tool to loosen this VERY tight bolt. Loosen about 1 plow until it loosens.









Remove the left in addition to right raise cam covers- located at the raise of each cylinder head.

• Remove the driver's side camshaft seat sensor comprehend using a 6mm hex wrench. An electrical connexion bracket is removed amongst the assembly.
• Remove the seat sensor (1 bolt inward center). Under the seat sensor is some other comprehend that needs to live removed- take away that comprehend also (2 bolts on exterior radius).
• Remove the rider side camshaft comprehend (there are ii on the rider side- the 1 you lot demand to take away is the outboard/lower one).
• Using WD-40 every bit a solvent, thoroughly build clean the cam covers yesteryear removing the apartment o-ring seals in addition to removing all contamination in addition to varnish from the expression upward in addition to groove of the cover. H5N1 brass brush may live needed to take away the varnish. Replace the seals amongst novel 026103085D seals in addition to identify the covers inward a build clean bag.
• Using WD-40 on a rag, build clean the expression upward of the heads where the cam covers mate. Remove all varnish/contamination from the apartment mating surfaces. Inspect amongst a mirror to live certain the expanse is VERY clean. (This is where almost all A8s leak oil- it is real of import to build clean these surfaces in addition to install novel seals to prevent/stop crude leaks.)
  
  
  
  
  
  
  
  
  
  Rotate engine to 0° Top Dead Center (TDC) using particular tool 3197.
  
  Install the ii cam belongings fixtures (3341) on the dorsum side of the engine. If they don't fit, rotate engine 1 revolution dorsum to TDC in addition to attempt to reinstall the 3341s. The engine crankshaft may demand to live jiggled slightly for the tools to engage, but NOT MUCH. NOTE- The deeper of the ii 3341 belongings fixtures goes on the driver's side camshaft, the shallower 1 on the rider side.
  
  
  
  WARNING
  
  Make SURE BOTH cam tools are both fully engaged in addition to held inward identify amongst at to the lowest degree ii bolts apiece before proceeding!
  
  
  
  Remove the bolt belongings the forepart engine damper (torque damper) to the right forepart timing belt cover.
  
  
  
  Remove the five bolts in addition to 1 flanged nut belongings the right side timing belt comprehend onto the engine. MAKE SURE TO NOTE WHERE THE LONG AND SHORT BOLTS GO. Two of the bolts tin solely live accessed yesteryear rotating the serpentine belt tensioner upward out of the way. (This is where a friend comes inward handy.) Once the five bolts induce got been removed, take away the TB cover. This may convey a few taps amongst a safe mallet or dead-blow hammer to loosen.
  
  
  
  This is what you lot should see.
  
  
  
  
  
  Remove the centre bolt in addition to the 4 smaller bolts belongings the harmonic balancer on in addition to take away the harmonic balancer.
  
  Using particular tool AS4394 Camshaft sprocket belongings tool to preclude the camshaft sprockets from trying to plow (do NOT rely on the camshaft locating tools to concur the engine!!), take away the ii bolts from the camshaft sprockets.
  
  
  
  Using a plastic dead-blow mallet, tap the cam sprockets off of their tapered shafts. This volition also loosen the timing belt. NOTE THAT THERE ARE NO LOCATING KEYS ON THE SHAFT/SPROCKET- SIMPLY H5N1 TAPERED FIT!! After the sprockets are removed, this is what you lot volition see:
  
  
  
  Remove the one-time timing belt from the ease of the sprockets in addition to discard.
  
  Remove the timing belt tensioner/pulley assembly. Replace the damper (077109246B, Timing Belt Damper) in addition to tensioner pulley (077109243A, Tensioner pulley). Do non re-install onto engine yet.
  
  
  
  
  
  
  
  Remove in addition to supplant both idler pulleys (077109244A, Idler pulley, 2 places). The centre eccentric from the lower idler pulley must live removed from the one-time pulley in addition to installed into the novel one. Torque the upper idler pulley centre nut to 18 lb-ft. DO NOT TIGHTEN THE NUT ON THE LOWER PULLEY WITH THE ECCENTRIC YET!
  
  
  
  Remove the one-time H2O pump. There are ix Torx displace bolts belongings it in. You may demand to tap the H2O heart amongst a mallet/piece of woods to dislodge it from the block.
  
  
  
  
  
  Remove ALL of the one-time H2O heart gasket cloth grade the block using WD-40 in addition to a brass brush. Clean the WD-40 off the gasket surface using IPA (rubbing alcohol) in 1 lawsuit all the gasket cloth has been removed.
  
  
  
  Get novel H2O heart for installation (077121004H, Water Pump). There should live a gasket already installed on the pump, if non install gasket (078121043A, Water heart gasket) to heart using gasket sealer.
  
  
  
  Install novel H2O heart onto the block. Thread all ix bolts into the H2O heart FINGER TIGHT. Using a torque wrench, torque all ix bolts to 20 lb-in USING THE TORQUE PATTERN INDICATED BELOW!) in 1 lawsuit all ix bolts induce got been torqued to twenty lb-in, torque them to 89 lb-in using the SAME TORQUE PATTERN!
  
  
  
  Remove the thermostat housing (2 bolts) in addition to the one-time thermostat. Note the orientation of the one-time thermostat (vent valve facing UP). Clean both thermostat housing in addition to block surfaces in addition to take away all traces of one-time gasket material. Install the novel thermostat vent valve facing UP.
  
  
  
  
  
  Reinstall the thermostat housing amongst a novel gasket. Torque the bolts snug (no torque value tin live establish for these bolts).
  
  Reinstall the timing belt tensioner/damper assembly. Torque the lever arm bolt, tensioner pulley, in addition to the goal of the damper to 18 lb-ft.
  
  
  
  LOOSELY install the ii camshaft sprockets onto the tapered shafts. MAKE SURE THE DIRECTION OF THE TAPER ON THE SPROCKET MATCHES THE TAPER ON THE SHAFT. Tighten the centre bolts until about 1 plow remains before coming inward contact amongst the sprocket. Note that in that location are no keyways on the shaft, so rotational orientation is non important.
  
  
  
  Time to install the novel Timing Belt! Using ii small-scale Allen wrenches in addition to a screwdriver, displace the eccentric within the tensioner pulley so that the belt tension is minimized. Get the novel TB (077109119E, Timing Belt) in addition to install into the engine per the routing diagram below. Since the TB is new, administration of locomote is non important.
  
  
  
  Install the harmonic balancer onto the crankshaft using the 4 smaller bolts MAKE SURE THAT THE TDC MARK ON THE BALANCER IS ROTATED TOWARDS THE METAL POINTER!! - torque the 4 bolts to 18 lb-ft. Install a novel lightly oiled centre bolt (905 428 01) in addition to the one-time washer. Tighten the centre bolt hand tight using the 3197 Harmonic balancer pulley holder in addition to 2079 Harmonic balancer pulley wrench.
  
  Verify that the crankshaft is even so at TDC (0 degrees). If the crank has moved during the procedure, displace it dorsum into position. Your engine should await similar this now:
  
  
  
  
  
  Timing belt tensioning. Using ii allen wrenches inward the tensioner eccentric holes, a screwdriver, in addition to a socket wrench (see photograph below), rotate the tensioner eccentric until the length of the damper is within the tolerances shown inward the photograph below. Use a twosome of 6” dial calipers to create upward one's heed this measurement, in addition to pay unopen attending to the locations that are used to brand the measurement. As presently every bit the damper length is correct, tighten the centre bolt of the tensioner eccentric in addition to lock the adjustment inward place. Re-verify the damper length to brand certain it didn't alter during the tightening of the bolt (it likely did). Re-adjust every bit necessary. Torque the eccentric tensioner centre bolt to 18 lb-ft. Re-check the damper length again, exactly to live sure.
  
  
  
  
  
  Tighten the ii bolts belongings the camshaft sprockets on finger tight. Using the AS4394 Camshaft sprocket belongings tool to react the torque, torque the sprocket bolts to 41 lb-ft. Your novel timing belt should similar a shot await similar this:
  
  
  
  
  
  Remove the ii 3341 Camshaft Locating fixtures from the dorsum of the engine.
  
  Install the driver's side camshaft comprehend amongst novel apartment o-ring seal (026103085D). Tighten the ii bolts to 15 lb-ft.
  
  Install the camshaft seat sensor onto the goal of the driver's side camshaft. Verify that the metallic tine inward the seat sensor engages the hole inward the camshaft. Tighten seat sensor centre bolt tight.
  
  
  
  Install the driver's side cam seat sensor cover- hollo back to attach the electrical connexion back upward bracket. Torque bolts to xv lb-ft. Plug the sensor electrical connexion into the receptacle.
  
  Install the passenger's side camshaft comprehend amongst novel apartment o-ring seal (026103085D)- hollo back to attach the electrical connexion back upward bracket. Tighten the ii bolts to 15 lb-ft.
  
  Using the 3197 Harmonic balancer pulley holder to plow the engine, rotate the engine through at to the lowest degree ii total revolutions, dorsum to TDC. Verify that all items seem to live rotating smoothly, in that location are no noises or binding, in addition to the TB tracks properly on all pulleys/sprockets.
  
  NOTE
  
  Clean all parts thoroughly within in addition to out before reinstalling them
  
  Install the rider side TB comprehend onto the block using the five bolts in addition to 1 shoulder nut. Install all vi fasteners loosely before tightening whatever of them- convey tending to larn the right bolts into the right holes (different lengths)!. Align the TB comprehend so that the arm on the comprehend is every bit unopen to touching the engine torque damper every bit possible, in addition to the dark safe gasket aligns amongst the outline on the block. Tighten the five bolts to 33 lb-ft, in addition to the shoulder nut to 89 lb-in.
  
  Install the torque damper bolt into the torque damper in addition to torque to 33 lb-ft.
  
  Install the driver's side TB comprehend onto the block using the ii shoulder nuts. Align the comprehend amongst the outline on the block in addition to torque the ii nuts to 89 lb-in.
  
  Using the 3197 Harmonic balancer pulley holder (engaged into the rider side timing belt comprehend slot) in addition to 2079 Harmonic balancer pulley wrench, torque the harmonic balancer centre bolt to 258 lb-ft. H5N1 cheater bar is highly recommended!!! The engine may demand to live rotated to larn the 3197 engaged inward both the harmonic balancer in addition to the TB cover. Your engine should similar a shot await similar this:
  
  
  
  
  
  Install the fan pulley onto the forepart of the rider side timing belt comprehend using the 3 grade 8.8 bolts. Torque to 18 lb-ft.
  
  Install the serpentine belt. NOTE which administration the belt was traveling when you lot removed it in addition to supplant inward the same orientation! Route the belt per the diagram below, except produce non attempt to seat it over the tensioning pulley yet.
  
  
  
  Using a 13mm deep socket in addition to 3/8” drive, amongst the displace grip towards the centre of the engine, draw upward on the tensioner until you lot tin skid the belt over the tensioner pulley. Release the pressure level on the tensioner in addition to banking concern check that the serpentine belt is properly aligned on all vi pulleys.
  
  Reinstall the fan/clutch in addition to cover assembly every bit 1 piece. The fan must live seat into the cover in addition to the fan/shroud combination lowered downward into the forepart of the engine every bit a nested pair. Using a 10mm wrench on 1 of the 3 fan pulley bolts to concur the fan still, tighten the large nut on the fan onto the pulley (big Crescent industrial plant great). NOTE- THIS IS LEFT-HAND THREADED- DO NOT TURN TO THE RIGHT TO TIGHTEN! Once the fan nut is snug, skid the fan cover downward into the slots at the bottom of the radiator. Fasten the top of the cover to the radiator amongst the ii bolts removed earlier. Tighten snug.
  
  Install the electrical fan onto the radiator yesteryear lowering it downward into the 3 slotted holes it came from. Rotate the fan about five degrees counter-clockwise (viewed from forepart of car- the top of the fan cover moves towards the passenger's side of the car) until it snaps into place. Install a novel torso pivot (4D0807300) into the hole located at the 8:00 seat (as viewed from the forepart of the car). Press it inward all the way.
  
  Reconnect the fan electrical cable to the dorsum expression upward of the radiator using the nylon zip-ties the manufactory installed, or if the manufactory items broke during removal, supplant amongst novel nix ties. Verify that in that location is no way for the electrical cable to come upward inward contact amongst whatever of the rotating/moving engine or fan parts.
  
  Reinstall the lower (1 connect point) in addition to and so the upper (3 connect points) radiator hoses on the forepart of the engine. Tighten the hose clamps snug, but produce NOT over tighten!
  
  Reinstall the plastic radiator hose holder to the forepart of the rider side TB comprehend using the cap nut. Tighten snug.
  
  Using a large flat-blade screwdriver, unopen the radiator drain valve (blue) at the bottom of the radiator behind the forepart lower grille. Reinstall the ii coolant low-point drain plugs into the bottom of the engine if they were removed earlier. (Leave the high-point bleed plugs off.) Add five liters of G001200 Red Pentosin (if the coolant was completely drained, otherwise add together a 50/50 mixture) coolant to the coolant reservoir in addition to inspect all ports for signs of leakage.
  
  Add demineralized H2O until coolant exits the high indicate bleed ports. Install both high indicate bleed plugs in addition to tighten snug. Connect the auxiliary H2O circulation heart electrical connexion (just behind the ii high indicate bleed ports).
  
  Reinstall the oval comprehend inward the cutout inward the lower driver's side bumper (where the coolant drain valve is accessed).
  
  Reinstall the 3 engine beauty covers, starting amongst the centre cover. Tighten all 8 bolts snug.
  
  Reinstall the air duct that runs from the air box to the throttle body. Tighten the ii hose clamps (one on each end) snug.
  
  Reinstall the air intake breather tubes (2) from the forepart of the engine compartment to the air box. The comprehend at the forepart of the engine is clipped inward place- exactly force it direct downward into the slots.
  
  THE MOMENT OF TRUTH! Verify that the coolant floor inward the coolant reservoir is even so within acceptable limits. Install the coolant reservoir cap if non already installed. START THE ENGINE- BE READY TO IMMEDIATELY SHUT OFF THE IGNITION IF ANYTHING SOUNDS EVEN SLIGHTLY WRONG!
  
  If all has gone well, the engine should run smoothly in addition to evenly. Allow the engine to larn upward to operating temperature in addition to plow ON the heater. Make certain that hot air is coming out of the air vents, in addition to allow it to run for a minute.
  
  Shut OFF the engine, in addition to re-check the coolant floor inward the coolant reservoir. If low, carefully take away the reservoir cap in addition to add together demineralized H2O until the proper floor is reached. Reinstall the reservoir cap.
  
  GO OUT AND ENJOY YOUR A8!
  
  Come home, build clean upward the mess, in addition to convey the one-time chemicals to a recycling facility.

Thus the article Best Audi A8 Timing Belt Replacement

That's all the article Best Audi A8 Timing Belt Replacement this time, hopefully can benefit you all. okay, see you in another article posting.

You are now reading the article Best Audi A8 Timing Belt Replacement with the link address https://newaudisportscar.blogspot.com/2019/01/best-audi-a8-timing-belt-replacement.html

Share this post