AUDI A4 1997 B5 / 1.G APB Engine Lubrication System Components User Guide

17-11


19 -
O-ring
Always replace
20 -
Oil filter
21 -
Hex nut Tightening torque: 30 NmThreaded line for oil cooler and oil filter is
screwed into upper section of pan with 20
Nm tightening torque.
22 -
Oil cooler Ensure O-ring is installed correctly when
installing
23 -
Oil pump Driven off crankshaft via chainTightening torque of chain sprocket to oil
pump: 25 Nm Tightening torque of oil pump to engine
block: 25 Nm
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17-12

Oil check valves, replacing


Note:
If irregular valve noise occurs repeatedly during
short journeys and disappears after extended
driving, the oil check valves must be replaced.

All cable ties which are released or cut open
when removing the engine must be replaced in
the same position when installing the engine.
Catch drained-off coolant in a clean container
for re-use or disposal.
Replace all gaskets and seals.

Removing

- Remove bolts -arrows- and remove engine cover panels -A...C-.
- Remove cover above air cleaner.
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17-13


Repair Manual, Body Exterior, Repair Group 63

Repair Manual, Body Exterior, Repair Group 50 - Remove noise insulation -arrows-.
- Drain coolant Page 19
-19
- Remove bumper- Move lock carrier to service position

Note:
Viscous fan has left-hand thread. - Remove viscous fan (counter-hold with pin wrench 3212).
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17-14

- Mark direction of rotation of ribbed belt.

Note:
Mark direction of rotation of ribbed belt. The belt can break if it runs in the
opposite direction when reinstalled. - To slacken ribbed belt, turn to the right using a 17 mm ring spanner
until the two holes are aligned with each other -arrow- and hold in
position with mandrel 3204.
- Take off ribbed belt.

- Disconnect water hoses -1- and -2-.
- Remove coolant reservoir (arrows).
- Disconnect connector for coolant level monitor.
- Remove cover panel from cylinder head cover (cylinder bank 4-6).
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17-15


- Pull off hose -1- going to vacuum reservoir.

- Remove air duct -arrows-.
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17-16

WARNING!

Fuel system is under pressure. Before
opening the system, place a cloth around the
connection. Then release pressure by
carefully loosening the connection.

- Disconnect fuel supply line and fuel return line -1- and -2-, and move
fuel lines clear.
- Pull hose off EVAP valve -3-.

- install clamp (special tool 3094) on hose from power steering reservoir
to power steering pump.
- Disconnect power steering hose -arrow-.
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17-17


Notes: - Release hose clamp -arrow-.
- Remove intake line -1-.
All hose connections are secured with clips. Charge air system must be free of leaks.Replace all seals and gaskets.

- Disconnect connector from air recirculation valve -2-.
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17-18


- Disconnect connector for camshaft timing control -1- (cylinder bank
4..6).
- Disconnect connectors from injectors -2- (cylinder bank 4..6).
- Pull crankcase breather -4- off cylinder head cover (cylinder bank 4..6).

- Disconnect connectors from injectors -2- (cylinder bank 1..3).
- Pull off hose -5- going to turbocharger intake side.
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17-19


- Unclip solenoid valve for charge pressure control -1-.
- Pull connector off EVAP valve -2-.

- Pull connector off throttle unit -1-.
- Pull connector off charge air sensor -2-.
- Pull off crankcase breather -3-.
- Pull connector off intake air temperature sender -4-.
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17-20


Note:
Watch position of retaining strips -2-. - Remove pressure lines -1-.

- Remove tensioner -1- for ribbed belt.
- Remove toothed belt guards -2- (left and right).
- Remove toothed belt guard -3- (center).
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