Volkswagen Air-Cooled 1970-1981 Repair Guide

Air Cleaner

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REMOVAL & INSTALLATION



Oil Bath Type

See Figures 1 through 5

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Fig. Fig. 1: To remove the air cleaner lid, unclasp the 4 lid clamps and lift the lid off of the air cleaner body-oil bath type



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Fig. Fig. 2: To remove the entire air cleaner assembly, disconnect the hot air hose from the air cleaner snorkel ...



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Fig. Fig. 3: ... detach the breather hose from the air cleaner body



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Fig. Fig. 4: ... loosen the air cleaner-to-carburetor clamp ...



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Fig. Fig. 5: ... and lift the air cleaner assembly off of the carburetor-oil bath type

This type cleaner should be cleaned at 6,000 mile intervals, or when the oil is changed.

TYPE 1 AND 2 (1970-73)
  1. To clean the air cleaner, remove the hoses attached to the air cleaner.
  2.  


CAUTION
Be careful to note the places where the hoses are attached. Interchanging the hoses will affect the operation of the engine.

  1. Next, loosen the air cleaner support bracket screw and the air cleaner clamp screw.
  2.  
  3. On 1970 models, disconnect the warm air flap cable. Lift the air cleaner off the engine. Keep the carburetor hole down to prevent spilling the oil out of the air cleaner.
  4.  
  5. Loosen the spring clips which secure the top of the air cleaner to the bottom and then separate the halves. Do not invert the upper half.
  6.  
  7. Put the upper half of the air cleaner down with the filter element facing downward. Thoroughly clean the bottom half.
  8.  
  9. Fill the air cleaner with 0.9 pints of SAE 30 (SAE 10W in sub-freezing climates) oil or, if present, to the oil level mark stamped into the side of the air cleaner.
  10.  
  11. Reassemble the air cleaner and install it on the engine.
  12.  

ALL TYPE 3, TYPE 4 (1971-72)

See Figure 6

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Fig. Fig. 6: Identification of the parts of an oil bath air cleaner used on Type 3 engines

  1. Disconnect the activated charcoal filter hose, the rubber elbow, and the crankcase ventilation hose. Remove the wing nut in the center of the air cleaner and lift the air cleaner assembly off of the engine.
  2.  
  3. Release the spring clips which keep the air cleaner halves together and take the cleaner apart. Do not invert the upper half.
  4.  
  5. Clean the lower half and refill it with 0.085 pints of SAE 30 oil (SAE 10W in subfreezing climates) to the level mark. When reassembling the air cleaner, align the marks for the upper and lower halves.
  6.  
  7. Reinstall the air cleaner on the engine. Make sure it is properly seated.
  8.  

Paper Element Type

TYPE 1 (1973-74), AND TYPE 4 (1973-74)

See Figures 7 and 8

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Fig. Fig. 7: Identification and locations of the paper element air cleaner components used on 1973-74 Type 4 engines



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Fig. Fig. 8: The air cleaner lid on 1973-74 Type 1 Beetle and Super Beetle air cleaners is held in place with wire clamps (arrows)

  1. Label and disconnect the hoses from the air cleaner.
  2.  


CAUTION
Do not interchange the position of the hoses.

  1. Loosen the air cleaner clamp and remove the air cleaner from the engine. Release spring clamps which keep the halves of the cleaner together and separate the halves.
  2.  
  3. Clean the inside of the air cleaner housing.
  4.  
  5. The paper element should be replaced every 18,000 miles under normal service. It should be replaced more often under severe operating conditions. A paper element may be cleaned by blowing through the element from the inside with compressed air. Never use a liquid solvent to clean a paper element.
  6.  
  7. Install the air cleaner element in the air cleaner housing and install the spring clips, making sure the halves are properly aligned. Install the cleaner on the engine.
  8.  

TYPE 1 (1975-80)
  1. Release the four clips at the top, side and bottom of the air cleaner housing and pull the front cover off the housing just enough to slide off the cardboard vent pipe at the bottom of the housing.
  2.  
  3. Take the filter out and clean it by striking it against a hard surface or blowing through it with compressed air. The filter should be replaced every 18,000 miles under normal conditions and more frequently under severe conditions.
  4.  
  5. When installing filter, make sure it is seated properly and that the bottom hose is connected.
  6.  

TYPE 2/1700 ENGINE (1972-73), TYPE 2/1800 ENGINE (1974)

The air filter is removed through the hatch in the interior of the bus above the engine on some models. Remove the rear mat to gain access.

  1. Label and disconnect the hoses from the air cleaner.
  2.  


CAUTION
Do not interchange the position of the hoses.

  1. Release the two clamps which secure the air cleaner to the carburetors. Release the clips which secure the air ducts to each carburetor.
  2.  
  3. Remove the air ducts separately. Remove the air cleaner housing.
  4.  
  5. Release the four spring clips which secure the cleaner halves together and then separate the halves.
  6.  
  7. Clean the inside of the housing. The paper element should be replaced every 18,000 miles under normal service. It should be replaced more often under severe operating conditions. A paper element may be cleaned by blowing through the element from the inside with compressed air. Never use a liquid solvent.
  8.  
  9. Assemble the air cleaner halves, making sure that they are properly aligned. Install the air cleaner by reversing the above. Make sure that the rubber sleeves on the air ducts and the rubber seals on the carburetors are seated properly.
  10.  

TYPE 2 (1975-79)

See Figure 9

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Fig. Fig. 9: Identification of air cleaner related components used on fuel injected Type 2 engines

  1. Disconnect the upper part of hose A from the heater air blower. Open the clamp at the lower part of hose A and remove the hose.
  2.  
  3. Open clamps B on the air cleaner housing (2 at both the front and rear). Open the cover on the left side and remove the air filter cartridge. The element may be cleaned by striking it against a hard surface face first and then by blowing compressed air through it from the opposite direction of air flow then the filter is installed.
  4.  

To remove the right section of the air cleaner housing to either clean it or remove the battery, proceed as follows:

  1. Open clamp C.
  2.  
  3. Lift the right section of the air cleaner housing up and pull it out of the engine compartment.
  4.  

Clean the insides of the housing with a cloth. Reverse the procedure to install both the housing and filter. Observe the following:

When inserting the right section of the housing, insert the locating projection into the side grommet first, then pull the housing toward the rear as you insert the lower locating projection in its seat. The paper element should be replaced every 18,000 miles under normal operating conditions, more often if the vehicle is used in severe climates or conditions.

TYPE 2 (1980-81)
  1. Open the hatch inside the luggage compartment at the rear of the vehicle.
  2.  
  3. The air cleaner is located off to the side of the engine. Unfasten the five clips holding the top cover to the air cleaner housing and remove the top cover.
  4.  
  5. Pull the filter out and shake it to remove dust, or replace it as necessary.
  6.  
  7. When replacing, install the filter in the lower housing and install the top cover, securing it first with the top clamps.
  8.  
  9. Secure the remaining clamps. The air filter must be replaced every 18,000 miles, more often if the vehicle is used in severe conditions.
  10.  

 
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