Service the air cleaner according to the maintenance interval chart in this section. When operating the vehicle in extremely dusty areas, in areas of high industrial pollution, or in mostly low-speed city driving, the element should be changed more frequently than the given interval. Inspect the air filter at every tune-up. A clogged air cleaner will restrict air passage into the combustion chambers of the engine. This means that a less than normal amount of air will be mixed with the fuel, which will richen the air/fuel mixture and cause poor engine performance and excessive fuel consumption.
REMOVAL & INSTALLATION
142, 144, 145, AND 164 MODELS
The element is removed from the air cleaner by disconnecting the hose clamp from the air preheating unit and unsnapping the clips holding the air cleaner housing halves together. The old element is then lifted out and new one is lowered in with the word UP on the element facing up. When securing the air cleaner housing halves together, take care not to damage the thermostat body for the intake air.Fuel Injected Vehicles
On fuel-injected 164 series Volvos, the clips securing the cover to the air cleaner must be undone and the old element removed. When refitting the cover to the air cleaner, make sure that the arrow points coincide.142, 144, AND 145 MODELS (1970-73)
On these models, the air cleaner is a one piece disposable unit. Since the elements cannot be removed from the air cleaner, the entire unit must be replaced.
To remove the air cleaner, turn the front wheels fully to the right, loosen and move the expansion tank for the cooling system to one side, disconnect the inlet duct hose and unfasten the attaching bolts which hold the air cleaner. Install the new air cleaner, reinstall and tighten the bolts, and reinstall the air inlet hose. Reposition and secure the coolant expansion tank.142, 144, AND 145 MODELS (1974)
See Figure 1
On these models the air cleaner is located beneath the air-fuel control unit for the fuel injection system. To remove the air cleaner element you must remove the air-fuel control unit: this is not a job for an inexperienced or fledgling mechanic.
To remove the air cleaner element, loosen the clamp and remove the rubber bellows from the top of the air-fuel control unit. Then disconnect the electrical connection at the air-fuel control unit and unlatch the retainers. Lift out the upper part of the air cleaner with the air-fuel control unit and replace the air cleaner element. Carefully re-assemble the air cleaner/air-fuel control unit, remembering to secure the clips, reattach the electrical connector and re-install the rubber bellows.
On all 1800E and 1800ES models, the radiator grille must first be removed to gain access to the air cleaner. Remove the grille clips by inserting pliers between the ribs of the grille and lifting up on the front end of the clips. Push each clip into its hole and remove the grille. Unscrew the wing nut on the air cleaner cover and remove the element.242, 244, AND 245 MODELS (1975)
The air filter is replaced in the same manner as on the 1974 fuel injected 142, 144 and 145 models. See above for procedures.242, 244, AND 245 MODELS (1976)
See Figures 2, 3, 4 and 5
The air cleaner is located to the left of the radiator. The element can be removed by unsnapping the clips retaining the air cleaner cover and separating the cover halves. Make sure the cover is properly seated and sealed when re-assembling.
See Figure 6
The air filter is housed in the large, flat canister on top of the engine. To remove the filter elements, disconnect the air hose from the top of the air cleaner, disconnect the rubber bellows between the air cleaner and the air-fuel control unit, remove the three attaching bolts and remove the air cleaner. Remove the filter element by unsnapping the clips and separating the air cleaner halves. Install a new element and reassemble, making sure that all the pieces fit properly and all hardware is re-installed.
The air cleaner element on these models is located to the left of the radiator. Unsnap the clips and separate the air cleaner housing halves to replace the element.GLE, COUPE AND 760 GLE MODELS
See Figure 6
Air cleaner element removal and installation is the same as on 262, 264, and 265 models. Refer to the procedure earlier in this section.GLT AND TURBO MODELS
See Figure 7
The air cleaner is located to the right of the radiator. Unsnap the clips and separate the air cleaner housing halves to service the element.
Turbocharged engines are very sensitive to proper airflow; you may wish to check or replace the air filter element more frequently than the manufacturer recommends.
See Figure 8
The air cleaner is located on the right fender well. Remove the rubber bellows hose from the air cleaner and unsnap the clips holding the air cleaner halves together to remove the element.
Diesel engines are very sensitive to proper airflow; you may wish to check or replace the air filter element more frequently than the manufacturer recommends.