Removal & Installation (Cog Driven)
- Oil pump drive components are located behind front engine cover. Drain engine coolant. See «DRAINING COOLING SYSTEM»(/audi/a4/b5-1999-2001/remont/mechanical/#28l-v6-30v-engine-code-aha-atq__draining-cooling-system).
- Remove oil pan. See «OIL PAN»(/audi/a4/b5-1999-2001/remont/mechanical/#28l-v6-30v-engine-code-aha-atq__oil-pana4-a6) under REMOVAL & INSTALLATION.
- Remove timing belt. See «TIMING BELT»(/audi/a4/b5-1999-2001/remont/mechanical/#28l-v6-30v-engine-code-aha-atq__timing-belt) under REMOVAL & INSTALLATION.
- Remove idler pulley. Remove crankshaft gear. Remove oil spray jet valve from front cover. Remove timing belt tensioner. (Scheme 222)and (Scheme 223).
- Remove lever for timing belt tensioner. Remove oil pump. To install, reverse removal procedure. Ensure drive cog on oil pump engages crankshaft. Replace oil seal. See «CRANKSHAFT FRONT OIL SEAL»(/audi/a4/b5-1999-2001/remont/mechanical/#28l-v6-30v-engine-code-aha-atq__crankshaft-front-oil-seal) under REMOVAL & INSTALLATION.
- Tighten components to specification. See «TORQUE SPECIFICATIONS»(/audi/a4/b5-1999-2001/remont/mechanical/#28l-v6-30v-engine-code-aha-atq__torque-specifications).
- Refill and bleed air from cooling system. See «COOLING SYSTEM BLEEDING»(/audi/a4/b5-1999-2001/remont/mechanical/#28l-v6-30v-engine-code-aha-atq__cooling-system-bleeding) under REMOVAL & INSTALLATION.