Air Cleaner Housing: Description and Operation

Air Cleaner Assembly, Exploded View:

1 Rubber Grommet
2 Air Cleaner Element
3 Air cleaner Housing, upper
4 Temperature regulator Thermal Vacuum Valve (TW)
- For intake air preheating
- Metal connector pipe with notch toward regulator flap.
5 Gasket
- Replace if damaged
6 Air ducting
- To remove clip out downward from upper air cleaner.
7 Mounting plate
8 O-ring
- Replace if damaged
9 Mass Air Flow (MAF) sensor -G70-.
10 10 Nm (7 ft lb)
11 Vacuum hose
12 Vacuum unit
13 Air cleaner, lower
14 Packing

Sensor Resistance Chart:

Fig. 1 Resistance graph

The diagram applies to Engine Coolant Temperature (ECT) sensor -G62- and Intake Air Temperature (IAT) sensor -G72-.

Scale A shows resistance values for temperature range 0°-50°C (32°-122°F) and scale B shows the values for temperature range 50°-100°C (122°-212°F).

Examples:
- 30°C(86°F) corresponds to a resistance from 1500-2000 ohms
- 80°C(176°F) corresponds to a resistance from 275-375 ohms