A8 TIMING BELT REPLACEMENT PROCEDURE
Parts (for a 1997 US Spec A8 4.2 Quattro):
077109119E Timing Belt 1 ea.
077109246B Timing Belt Damper 1 ea.
N 905 428 01 Harmonic Balancer Bolt 1 ea.
077109244A Idler pulley 2 ea.
077109243A Tensioner pulley 1 ea.
077903137Q Serpentine belt 1 ea.
078121113F Thermostat 1 ea.
077121004H Water Pump 1 ea.
078121043A Water pump gasket 1 ea.
G001200 (Red) Pentosin coolant 4-5 liters
4D0807300 Body Pin 1 ea.
026103085D Camshaft cover oil seals 2 ea.!
054115147B Front main crank seal 1 ea. OPTIONAL!
Various silicone sealants and Locktite products.
Tools: (All tools are metric unless otherwise specified.)
Set of open-end wrenches (10mm, 12mm, and 13mm are most commonly used)
Set of socket-drive allen wrenches (4mm, 5mm, and 6mm are most commonly used)
Set of deep-well 3/8” drive socket wrenches (10mm, 12mm, and 13mm are most commonly used)
Set of normal depth 3/8” drive socket wrenches (10mm, 12mm, and 13mm are most commonly used)
Set of normal depth 1/2” drive socket wrenches (10mm, 12mm, and 13mm are most commonly used)
Set of deep-well 3/8” drive socket wrenches (10mm, 12mm, and 13mm are most commonly used)
Set of socket drive Torx bits, #30 most commonly used
Screwdrivers, both slotted and Phillips drive, various sizes and lengths
3/8” and ½” drive socket wrenches, fine ratchet on the 3/8” drive helps a lot
SPECIAL TOOLS:
AS4394 Camshaft sprocket holding tool
3197 Harmonic balancer pulley holder
3341 Camshaft Locating fixtures
2079 Harmonic balancer pulley wrench
NOMENCLATURE: When a position is referred to “Right Side”, this means the passenger side of the
vehicle. “Left side” is therefore the driver’s side of the vehicle (Left-hand drive models!!)
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