BMW Inline Instructions De Montage page 84

3.7 To install and connect the auxiliary heater
Unfold folded page (3-51)
Figure A
When marking the installation date, ensure that you only remove the year numbers, which are not required for
the installation date. In other words, the installation date must remain legible.
Affix the duplicate factory sticker (47) on the left-hand Macpherson strut tower (79) as shown and mark the date of
installation.
Affix the sticker (50) that gives details of fitting the relay, the fuse and the diagnostics connector on the left-hand
Macpherson strut tower (79) as shown.
Figure B
Cut the exhaust hose (18) to the following dimensions:
18a = 80 mm
18b = 220 mm.
Figure C
20a = Feed hose 1 (from feed hose 2 to circulating pump)
20b = Feed hose 2 (from feed hose 1 to feed hose 3 (M57) or to the coolant hose coming from the cylinder (M47)
20c = M57 only (six-cylinder): Supply hose 5 (from supply hose 4 to the car's additional water pump)
20d = Supply hose 3 (from supply hose 2 to supply hose 4)
20e = Supply hose 4 (from supply hose 3 to supply hose 5)
23a = Supply hose 1 (from supply hose 2 to the auxiliary heater)
23b = M57 only (six-cylinder): Supply hoses 3 and 4 (from feed hose 2 to the coolant hose coming from
the cylinder)
24a = M47 only (four-cylinder): Supply hose 5 (from supply hose 4 to the car's additional water pump)
24b = Supply hose 2 (from supply hose 1 to supply hose 3)
Cut the heating hoses (20, 23 and 24) as follows:
Dimension M47 (four-cylinder)
a
b 1120 mm
c
d
e
f
g
h
i
The other sections of hose are not required.
Figure D
Connect the heating hoses (23a and 24b) to the auxiliary heater (12) as shown using the hose connectors (44) and
hose clips (43).
Secure the silencer (16) and holder (17) to the auxiliary heater (12) with the hexagonal screw M6 x 12 (39), hexa-
gonal nut M6 and self-tapping screw (42).
Connect the exhaust hose (18b) to the auxiliary heater (12) and silencer (16) using pipe clips (38).
Cut the combustion air hose (25) to a length of 110 mm and connect it to the intake noise damper (36) and the
auxiliary heater (12) using a hose clip (43).
Secure the intake noise damper (36) to the circulating pump for the auxiliary heater (12) as shown with a cable tie
(37).
Secure the holder (14) to the auxiliary heater (12) with a self-tapping screw (42).
Figure E
Mark the position of the hole for the passage grommet (15) on the front wheel arch trim (80) with the dimensions
a = 35 mm,
drill the hole with a diameter of 40 mm using a step drill and insert the passage grommet (15).
Figure F
Mark the hole (83) for installing the temperature sensor (82) on the ventilation duct (81) with the dimensions
a = 50 mm
drill the hole with a diameter of 45 mm using a step drill and insert temperature sensor (82).
Fit the wheel arch trim.
60 mm
600 mm
1110 mm
600 mm
55 mm
100 mm
80 mm
M57 (six-cylinder)
60 mm
1120 mm
660 mm
140 mm
1110 mm
720 mm
55 mm
100 mm
80 mm
EN/3-43