BMW 1999-2005 M3 Service Manual page 386

Radiator and Cooling System
10 of 16
http://ebahn.bentleypublishers.com/BMW/3/E46/Repair%20Manuals/1...
Remove engine drive belt: Lever
tensioner hex (large arrow) in
clockwise direction (facing engine) and
slip belt off coolant pump pulley.
Note:
Mark direction of drive belt rotation if
reusing belt.
Remove coolant pump pulley bolts
-
and remove pulley from pump.
Remove pump mounting nuts
-
(qty. 4).
Note:
The coolant pump is mounted on studs
and retained by nuts.
Insert two M6 screws (arrows) in
tapped bores and tighten uniformly
until pump is free from timing chain
cover. (Thermostat and hoses have
been removed for visual access.)
- Installation is reverse of removal,
noting the following:
Be sure to replace sealing O-ring
and gaskets.
Coat O-ring with lubricant during
installation.
Tightening torques
Coolant pump to
timing chain cover
Coolant pump
pulley to coolant
pump
Engine block drain
plug to block
10 Nm (89 in-lb)
10 Nm (89 in-lb)
25 Nm (18 ft-lb)
2/25/2009 9:57 PM