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Title : Best Audi A8 Coolant Expansion Tank Replacement
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Best Audi A8 Coolant Expansion Tank Replacement

Overview
The next physical care for is to live used on the A8 4.2 32 Valve (ABZ) motor. This engine was constitute on the 1997 to 1999 USA jump A8's. This physical care for tin besides live used for the 3.7 V8 engines. Much of this physical care for is applicable to other 4.2 motors equally well. Please consult the Bently manual when using this procedure.

Determining Replacment
If yous make got the leak designing shown below, or your tank looks similar the i below, it's fourth dimension to supersede it. While yous are at it, supersede the bleeder O-rings.

Tank leak pattern



Tank supply hose plumbing equipment cracks



Bleeder screw leaks





Standard Tools Required

• 15 mm 12-point socket (must live 12-point), 1/4 or 3/8 drive, amongst a 3-inch extension, coupled amongst a in addition to screwdriver-type handle.
• Number two Phillips screwdriver
• Number two Flat-tip screwdriver
• Pliers or Channel-Locks, etc. (Something to take away the pinch camps)
• Allen wrench to take away plastic engine covers
• Jack in addition to jackstands, or elevator
• 3/8" ID hose, approx 1.5 - two feet long
• Extremely build clean v gallon bucket.
  

Parts Required

• Coolant expansion tank ($100.00 from dealer)
• 2ea O rings from Hardware store, from the plumbing dept, size: 7/16 X 1/4 X 3/32 (#78 o ring)
• replacment hose clamps for pinch clamp

Removal Procedure:

1. Raise the automobile on the driver's front, high plenty to tally the v gallon bucket underneath, in addition to back upwards amongst jackstands.
2. Remove the plastic pan nether the engine using the flat-tipped screwdriver.
3. Pop off the grill inward the driver's front end bumper.
   
   
   
   
4. Remove the expansion tank cap, house drain hose on radiator drain, house other destination into v Gal bucket, in addition to opened upwards petcock valve.
   
   
   
   
5. Using the 15mm socket, carefully take away the two bleeder screws, located on the driver's side firewall.
   
   
   
   
6. Disconnect the plow over off hose from the expansion tank.
7. As the fluid drains, take away all 3 plastic engine covers, unscrew the expansion tank mounting screws, in addition to take away the plastic embrace that is currently belongings the plow over off expansion tank hose.
8. Lift the tank slightly in addition to contestation to let total drainage.
   
   
   
   
9. Re-route the plow over off hose from on plow over off of the intake manifold, to road along the front end of the engine. This besides allows for to a greater extent than room for non-standard clamps when replacing the oile breather hose.
   
   Old hose route
   
   
   
   
   
   New hose route
   
   
   
   
   
10. Disconnect the coolant marking sensor lead, located on the bottom of the expansion tank.
11. Make for certain that the coolant is sufficiently drained, in addition to disconnect the bottom hose.
12. Remove the tank.

Installation Procedure:

1. Connect bottom hose to novel tank.
2. Connect the coolant marking atomic number 82 to coolant marking sensor.
3. Mount tank in addition to plastic hose cover. Remember, the hose is no longer is routed through this cover. Also reinstall the plastic engine covers.
4. Connect the plow over off hose.
   It should similar a shot hold back something similar this:
   
   
   
   
5. Close Radiator petcock valve, merely larn out grill slice off for now.
6. Remove former O rings from each of the bleeder screws. Replace amongst the #78 O rings. This volition live a really tight fit, merely they volition larn on.
7. Carefully screw bleeder screws dorsum in, merely larn out the O outcry component division exposed. This is to let air to escape spell refilling
8. Using a build clean funnel, (I made i from a plastic milk jug), refill amongst drained radiator fluid. Audi recommends changing the fluid. However, if your fluid is yet inward skillful condition, (no discoloration), in addition to yous used a build clean drain hose on the radiator, in addition to used a build clean bucket, I run into no argue to buy new.
9. Check for leaks.
10. Tighen downwardly bleeder screws.
11. Reinstall expansion tank cap.
12. Start & piece of job the engine upwards to operating temperature.
13. Check for leaks.
14. Turn off engine, hold back v - 10 minutes, in addition to repeat steps seven through xiii until fluid reaches proper level, merely brand for certain to salvage pressure level via the expansion tank cap.
15. Reinstall grill piece.

Thus the article Best Audi A8 Coolant Expansion Tank Replacement

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